HYDAC傳感器HDA4444-A-600-Y-ZBE03翊霈優供

HYDAC傳感器HDA4444-A-600-Y-ZBE03翊霈優供

用于磁(ci)(ci)化(hua)開磁(ci)(ci)路(lu)軟(ruan)磁(ci)(ci)材料試樣(yang)。又稱(cheng)軟(ruan)磁(ci)(ci)磁(ci)(ci)導計。其結構見(jian)圖(tu)1。材料試樣(yang)夾在兩U狀磁(ci)(ci)軛之間，并穿(chuan)過均勻(yun)分布的(de)磁(ci)(ci)化(hua)線圈(quan)。磁(ci)(ci)軛由(you)硅(gui)鋼片疊制(zhi)而成。用中(zhong)場(chang)磁(ci)(ci)導計代替愛潑(po)斯(si)坦儀測量硅(gui)鋼片等的(de)磁(ci)(ci)特(te)性和鐵損(sun)，無需(xu)剪裁，可節省大量試樣(yang)材料，并能方便(bian)地裝入和取出試樣(yang)。較簡(jian)單的(de)中(zhong)場(chang)磁(ci)(ci)導計只使用一(yi)個U狀磁(ci)(ci)軛，試樣(yang)可采用更小尺寸的(de)切片（見(jian)硅(gui)鋼片磁(ci)(ci)特(te)性測量）。
由(you)于(yu)鐵(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)的(de)(de)(de)作(zuo)用(yong)(yong),導(dao)(dao)(dao)致螺線(xian)(xian)(xian)(xian)管(guan)(guan)內(nei)(nei)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)(de)均(jun)(jun)勻性遭到(dao)破(po)壞,磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)(ce)量線(xian)(xian)(xian)(xian)圈常數(shu)由(you)此(ci)(ci)(ci)產(chan)(chan)生變(bian)化(hua)(hua),使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)性能(neng)測(ce)(ce)量結果嚴重失真.所以,用(yong)(yong)中(zhong)(zhong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)計(ji)來(lai)測(ce)(ce)量軟(ruan)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)(liao)棒形試樣(yang)(yang)(yang)的(de)(de)(de)各項(xiang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)性能(neng)是(shi)不適宜的(de)(de)(de).當(dang)把一個鐵(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)封閉(bi)的(de)(de)(de)盒子(zi)放人均(jun)(jun)勻磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)中(zhong)(zhong)，則盒壁(bi)與其(qi)中(zhong)(zhong)的(de)(de)(de)空間(jian)(jian)構(gou)成(cheng)了(le)并(bing)聯磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)路(lu)。由(you)于(yu)鐵(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)的(de)(de)(de)相對磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)率遠(yuan)(yuan)遠(yuan)(yuan)大(da)(da)于(yu)空氣的(de)(de)(de)相對磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)率，因(yin)(yin)此(ci)(ci)(ci)，空腔中(zhong)(zhong)的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)阻就遠(yuan)(yuan)遠(yuan)(yuan)大(da)(da)于(yu)盒壁(bi)的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)阻，所以磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)幾乎(hu)全部從盒壁(bi)內(nei)(nei)通過(guo)，而(er)空腔內(nei)(nei)僅有極少(shao)數(shu)的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)通過(guo), 因(yin)(yin)此(ci)(ci)(ci)，空腔內(nei)(nei)的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)很(hen)弱。同樣(yang)(yang)(yang)的(de)(de)(de)原因(yin)(yin)，當(dang)螺管(guan)(guan)中(zhong)(zhong)有鐵(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)試樣(yang)(yang)(yang)時，螺管(guan)(guan)中(zhong)(zhong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)(de)均(jun)(jun)勻性已遭到(dao)破(po)壞，絕大(da)(da)部分磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)也應通過(guo)鐵(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)試樣(yang)(yang)(yang)，在(zai)(zai)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)開路(lu)情況下只有少(shao)數(shu)的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)通過(guo)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)(ce)量線(xian)(xian)(xian)(xian)圈的(de)(de)(de)間(jian)(jian)隙，因(yin)(yin)此(ci)(ci)(ci)，測(ce)(ce)得磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)度(du)就很(hen)小；在(zai)(zai)閉(bi)合磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)路(lu)情況下由(you)于(yu)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)計(ji)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)扼(e)體和鐵(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)試樣(yang)(yang)(yang)共(gong)同作(zuo)用(yong)(yong)，使(shi)較多的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)通過(guo)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)(ce)量線(xian)(xian)(xian)(xian)圈的(de)(de)(de)間(jian)(jian)隙，因(yin)(yin)此(ci)(ci)(ci)，測(ce)(ce)得磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)度(du)就較大(da)(da) [1] 。強(qiang)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)計(ji)于(yu)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)永(yong)(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)(liao)（即硬磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)(liao)）試樣(yang)(yang)(yang)。又(you)稱永(yong)(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)計(ji)。由(you)于(yu)永(yong)(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)(liao)在(zai)(zai)測(ce)(ce)量與磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)時要求有很(hen)強(qiang)而(er)集(ji)中(zhong)(zhong)的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)，且永(yong)(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)(liao)試樣(yang)(yang)(yang)多是(shi)開路(lu)形式，故(gu)專門制造了(le)這種磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)計(ji)。強(qiang)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)計(ji)由(you)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極、磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛(e)、磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)線(xian)(xian)(xian)(xian)圈等構(gou)成(cheng)（圖2），試樣(yang)(yang)(yang)夾在(zai)(zai)可(ke)動磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極與固(gu)定磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極之間(jian)(jian)。為使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)集(ji)中(zhong)(zhong)在(zai)(zai)試樣(yang)(yang)(yang)上(shang)，須使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛(e)消耗的(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)安(an)匝盡(jin)量少(shao)，因(yin)(yin)此(ci)(ci)(ci)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛(e)通常采用(yong)(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)率高(gao)的(de)(de)(de)材料(liao)(liao)，并(bing)且截面(mian)較大(da)(da)，制作(zuo)時要求有較高(gao)的(de)(de)(de)工藝水平。磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)線(xian)(xian)(xian)(xian)圈由(you)直流電源(yuan)(yuan)供電，其(qi)容量可(ke)滿(man)足產(chan)(chan)生足夠(gou)大(da)(da)的(de)(de)(de)飽(bao)和磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)度(du)Hm的(de)(de)(de)需要。Hm一般取被(bei)測(ce)(ce)材料(liao)(liao)內(nei)(nei)稟矯頑力(li)(li)(li)Hcj的(de)(de)(de)3～5倍，電源(yuan)(yuan)的(de)(de)(de)穩定度(du)應保證在(zai)(zai)1分鐘內(nei)(nei)變(bian)化(hua)(hua)不超(chao)過(guo)0.1%。
計為快(kuai)速(su)檢驗和(he)分(fen)(fen)選永磁(ci)(ci)材料，常采(cai)用對稱雙軛(e)磁(ci)(ci)導(dao)計結構。它的(de)兩個(ge)U狀(zhuang)磁(ci)(ci)軛(e)*對稱，4個(ge)磁(ci)(ci)化(hua)線(xian)圈(quan)*相同(tong)，并串聯在(zai)一(yi)(yi)起。未(wei)放入(ru)試(shi)樣時(shi)，左右兩氣(qi)(qi)(qi)隙(xi)(xi)內(nei)(nei)的(de)磁(ci)(ci)通相等，中(zhong)間氣(qi)(qi)(qi)隙(xi)(xi)內(nei)(nei)的(de)磁(ci)(ci)通為零。在(zai)一(yi)(yi)邊氣(qi)(qi)(qi)隙(xi)(xi)中(zhong)放入(ru)試(shi)樣后，磁(ci)(ci)路平衡被破壞，中(zhong)間氣(qi)(qi)(qi)隙(xi)(xi)內(nei)(nei)存在(zai)有正比于試(shi)樣磁(ci)(ci)化(hua)強度(du)的(de)磁(ci)(ci)通。作用于試(shi)樣的(de)磁(ci)(ci)場強度(du)，可在(zai)另一(yi)(yi)邊氣(qi)(qi)(qi)隙(xi)(xi)內(nei)(nei)測得。如在(zai)一(yi)(yi)邊氣(qi)(qi)(qi)隙(xi)(xi)內(nei)(nei)放入(ru)標準試(shi)樣，則(ze)可對放在(zai)另一(yi)(yi)邊氣(qi)(qi)(qi)隙(xi)(xi)中(zhong)的(de)試(shi)樣進行(xing)分(fen)(fen)選
數(shu)(shu)字電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)表是一(yi)(yi)(yi)種智能型、性(xing)(xing)能穩定(ding)、高(gao)可靠性(xing)(xing)、3 5/6數(shu)(shu)字多用(yong)(yong)表，儀表采用(yong)(yong)33mm字高(gao)LCD顯(xian)(xian)示(shi)器，讀數(shu)(shu)清(qing)晰，顯(xian)(xian)示(shi)直觀，操作方便，可用(yong)(yong)來測(ce)(ce)(ce)量(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、二極(ji)管(guan)及通(tong)斷測(ce)(ce)(ce)試(shi)(shi)(shi)；同(tong)時還設(she)有單位符號顯(xian)(xian)示(shi)、數(shu)(shu)據保持、大(da)小(xiao)値測(ce)(ce)(ce)量(liang)(liang)(liang)，自動/手動量(liang)(liang)(liang)程轉換(huan)、自動斷電(dian)(dian)(dian)(dian)(dian)(dian)、自動識別及報(bao)警(jing)功(gong)能。整機(ji)采用(yong)(yong)了一(yi)(yi)(yi)個(ge)能直接驅(qu)動LCD微處理器和雙(shuang)積分(fen)(fen)(fen)A/D轉換(huan)集成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)，一(yi)(yi)(yi)個(ge)提供高(gao)分(fen)(fen)(fen)辨(bian)力(li)、高(gao)精(jing)度(du)(du)的(de)(de)(de)(de)數(shu)(shu)字顯(xian)(xian)示(shi)驅(qu)動，該表功(gong)能齊全(quan)，測(ce)(ce)(ce)量(liang)(liang)(liang)準確度(du)(du)高(gao)，使用(yong)(yong)方便，是實驗(yan)(yan)室、工廠、無(wu)線(xian)電(dian)(dian)(dian)(dian)(dian)(dian)愛(ai)好(hao)者及家庭(ting)的(de)(de)(de)(de)理想工具(ju)。確認電(dian)(dian)(dian)(dian)(dian)(dian)池和保險絲已正(zheng)確安裝；要測(ce)(ce)(ce)量(liang)(liang)(liang)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)在測(ce)(ce)(ce)量(liang)(liang)(liang)前已充分(fen)(fen)(fen)放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)；要測(ce)(ce)(ce)量(liang)(liang)(liang)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)，其極(ji)性(xing)(xing)要與(yu)測(ce)(ce)(ce)量(liang)(liang)(liang)端子的(de)(de)(de)(de)極(ji)性(xing)(xing)一(yi)(yi)(yi)致；請一(yi)(yi)(yi)定(ding)注意，不要在測(ce)(ce)(ce)量(liang)(liang)(liang)端子加載電(dian)(dian)(dian)(dian)(dian)(dian)壓，否則(ze)將導致嚴重的(de)(de)(de)(de)損害(hai)；不要嘗試(shi)(shi)(shi)短接兩(liang)個(ge)輸入(ru)端子，否則(ze)將極(ji)大(da)的(de)(de)(de)(de)浪費電(dian)(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)(dian)量(liang)(liang)(liang)，并(bing)以過載顯(xian)(xian)示(shi)；如(ru)果被測(ce)(ce)(ce)量(liang)(liang)(liang)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)器是未知的(de)(de)(de)(de)，請從(cong)小(xiao)量(liang)(liang)(liang)程開始(shi)測(ce)(ce)(ce)量(liang)(liang)(liang)，并(bing)逐步加大(da)直到得(de)到合適(shi)的(de)(de)(de)(de)值。為快速檢驗(yan)(yan)和分(fen)(fen)(fen)選(xuan)永(yong)磁(ci)材料，常采用(yong)(yong)對(dui)稱(cheng)雙(shuang)軛(e)磁(ci)導計結構。它(ta)的(de)(de)(de)(de)兩(liang)個(ge)U狀磁(ci)軛(e)*對(dui)稱(cheng)，4個(ge)磁(ci)化線(xian)圈*相同(tong)，并(bing)串(chuan)聯在一(yi)(yi)(yi)起。未放(fang)入(ru)試(shi)(shi)(shi)樣(yang)時，左右兩(liang)氣(qi)(qi)隙(xi)內的(de)(de)(de)(de)磁(ci)通(tong)相等，中(zhong)(zhong)間(jian)氣(qi)(qi)隙(xi)內的(de)(de)(de)(de)磁(ci)通(tong)為零(ling)。在一(yi)(yi)(yi)邊氣(qi)(qi)隙(xi)中(zhong)(zhong)放(fang)入(ru)試(shi)(shi)(shi)樣(yang)后，磁(ci)路(lu)平衡被破壞，中(zhong)(zhong)間(jian)氣(qi)(qi)隙(xi)內存在有正(zheng)比于試(shi)(shi)(shi)樣(yang)磁(ci)化強度(du)(du)的(de)(de)(de)(de)磁(ci)通(tong)。作用(yong)(yong)于試(shi)(shi)(shi)樣(yang)的(de)(de)(de)(de)磁(ci)場強度(du)(du)，可在另一(yi)(yi)(yi)邊氣(qi)(qi)隙(xi)內測(ce)(ce)(ce)得(de)。如(ru)在一(yi)(yi)(yi)邊氣(qi)(qi)隙(xi)內放(fang)入(ru)標準試(shi)(shi)(shi)樣(yang)，則(ze)可對(dui)放(fang)在另一(yi)(yi)(yi)邊氣(qi)(qi)隙(xi)中(zhong)(zhong)的(de)(de)(de)(de)試(shi)(shi)(shi)樣(yang)進行分(fen)(fen)(fen)選(xuan)。量(liang)(liang)(liang)程選(xuan)擇
選(xuan)擇功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)表的(de)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)就是選(xuan)擇功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)表中的(de)電(dian)(dian)(dian)流(liu)(liu)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)和電(dian)(dian)(dian)壓(ya)(ya)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)。使(shi)(shi)用時應使(shi)(shi)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)表中的(de)電(dian)(dian)(dian)流(liu)(liu)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)不(bu)(bu)(bu)小于(yu)(yu)負(fu)載(zai)(zai)電(dian)(dian)(dian)流(liu)(liu)，電(dian)(dian)(dian)壓(ya)(ya)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)不(bu)(bu)(bu)低于(yu)(yu)負(fu)載(zai)(zai)電(dian)(dian)(dian)壓(ya)(ya)，而(er)(er)不(bu)(bu)(bu)能(neng)(neng)僅從功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)來(lai)考慮。例如(ru)，兩只功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)表，量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)分(fen)別是IA、300V和2A、150V，由計算可知其功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)均為300W，如(ru)果(guo)要(yao)(yao)測(ce)量(liang)(liang)(liang)(liang)(liang)一負(fu)載(zai)(zai)電(dian)(dian)(dian)壓(ya)(ya)為220V、電(dian)(dian)(dian)流(liu)(liu)為IA的(de)負(fu)載(zai)(zai)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)時應逸用IA、300V的(de)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)表，而(er)(er)2A、150V的(de)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)表雖(sui)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)也大(da)于(yu)(yu)負(fu)載(zai)(zai)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)，但是由于(yu)(yu)負(fu)載(zai)(zai)電(dian)(dian)(dian)壓(ya)(ya)高于(yu)(yu)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)表所(suo)能(neng)(neng)承受的(de)電(dian)(dian)(dian)壓(ya)(ya)150V，故不(bu)(bu)(bu)能(neng)(neng)使(shi)(shi)用。所(suo)以，在測(ce)量(liang)(liang)(liang)(liang)(liang)功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)前要(yao)(yao)根據負(fu)載(zai)(zai)的(de)額定電(dian)(dian)(dian)壓(ya)(ya)和額定電(dian)(dian)(dian)流(liu)(liu)來(lai)選(xuan)擇功(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)表的(de)量(liang)(liang)(liang)(liang)(liang)程(cheng)(cheng)。
測量(liang)(liang)(liang)線(xian)(xian)(xian)(xian)(xian)(xian)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系測量(liang)(liang)(liang)機構的(de)(de)(de)(de)轉動力(li)矩方向和(he)(he)兩(liang)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)中(zhong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)方向有(you)關(guan)，為(wei)(wei)了防止電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動系功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)的(de)(de)(de)(de)指針(zhen)(zhen)反偏，接(jie)(jie)(jie)線(xian)(xian)(xian)(xian)(xian)(xian)時(shi)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)標(biao)(biao)有(you)“·”號的(de)(de)(de)(de)端(duan)(duan)鈕(niu)必須接(jie)(jie)(jie)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)正(zheng)，而電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)另一(yi)(yi)端(duan)(duan)則與負(fu)(fu)載(zai)(zai)相連，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)以(yi)串聯形(xing)式接(jie)(jie)(jie)入電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)。功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)標(biao)(biao)有(you)“·”號的(de)(de)(de)(de)端(duan)(duan)鈕(niu)可(ke)(ke)(ke)以(yi)接(jie)(jie)(jie)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源端(duan)(duan)鈕(niu)的(de)(de)(de)(de)任(ren)一(yi)(yi)端(duan)(duan)上(shang)(shang)，而另一(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)端(duan)(duan)鈕(niu)則跨接(jie)(jie)(jie)到(dao)負(fu)(fu)載(zai)(zai)的(de)(de)(de)(de)另一(yi)(yi)端(duan)(duan)，當(dang)負(fu)(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)遠(yuan)(yuan)(yuan)(yuan)遠(yuan)(yuan)(yuan)(yuan)大于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)時(shi)，應(ying)采(cai)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)前接(jie)(jie)(jie)法。這時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)是負(fu)(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)和(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)之(zhi)和(he)(he)，功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)測量(liang)(liang)(liang)的(de)(de)(de)(de)是負(fu)(fu)載(zai)(zai)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)和(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)之(zhi)和(he)(he)。如果(guo)負(fu)(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)遠(yuan)(yuan)(yuan)(yuan)遠(yuan)(yuan)(yuan)(yuan)大于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)，則可(ke)(ke)(ke)以(yi)略去電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)分壓(ya)(ya)(ya)(ya)(ya)所造成的(de)(de)(de)(de)影(ying)響，測量(liang)(liang)(liang)結果(guo)比較(jiao)接(jie)(jie)(jie)近負(fu)(fu)載(zai)(zai)的(de)(de)(de)(de)實際功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)值。當(dang)負(fu)(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)遠(yuan)(yuan)(yuan)(yuan)遠(yuan)(yuan)(yuan)(yuan)小(xiao)(xiao)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)時(shi)，應(ying)采(cai)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)后接(jie)(jie)(jie)法 。這時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)兩(liang)端(duan)(duan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)雖然等于(yu)(yu)負(fu)(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，但(dan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)中(zhong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)卻(que)等于(yu)(yu)負(fu)(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)與功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)中(zhong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)之(zhi)和(he)(he)，測量(liang)(liang)(liang)時(shi)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)讀數(shu)為(wei)(wei)負(fu)(fu)載(zai)(zai)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)之(zhi)和(he)(he)。由于(yu)(yu)此時(shi)負(fu)(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)遠(yuan)(yuan)(yuan)(yuan)小(xiao)(xiao)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)，所以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)分流(liu)(liu)(liu)(liu)(liu)作用(yong)(yong)大大減(jian)小(xiao)(xiao)，其對測量(liang)(liang)(liang)結果(guo)的(de)(de)(de)(de)影(ying)響也可(ke)(ke)(ke)以(yi)大為(wei)(wei)減(jian)小(xiao)(xiao)。如界被(bei)測負(fu)(fu)載(zai)(zai)本(ben)身功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)較(jiao)大，可(ke)(ke)(ke)以(yi)不考慮功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)本(ben)身的(de)(de)(de)(de)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)對測量(liang)(liang)(liang)結果(guo)的(de)(de)(de)(de)影(ying)響，則兩(liang)種接(jie)(jie)(jie)法可(ke)(ke)(ke)以(yi)任(ren)意選(xuan)(xuan)擇。選(xuan)(xuan)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)前接(jie)(jie)(jie)法，因(yin)為(wei)(wei)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)中(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)一(yi)(yi)般都小(xiao)(xiao)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)(quan)支路(lu)的(de)(de)(de)(de)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)。正(zheng)確讀數(shu)一(yi)(yi)般安(an)裝(zhuang)式功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)為(wei)(wei)直(zhi)讀單(dan)量(liang)(liang)(liang)程式，表(biao)(biao)(biao)(biao)上(shang)(shang)的(de)(de)(de)(de)示(shi)數(shu)即(ji)為(wei)(wei)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)數(shu)。但(dan)便攜式功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)一(yi)(yi)般為(wei)(wei)多量(liang)(liang)(liang)程式，在表(biao)(biao)(biao)(biao)的(de)(de)(de)(de)標(biao)(biao)度(du)尺(chi)上(shang)(shang)不直(zhi)接(jie)(jie)(jie)標(biao)(biao)注(zhu)示(shi)數(shu)，只(zhi)標(biao)(biao)注(zhu)分格。在選(xuan)(xuan)用(yong)(yong)不同的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)(liang)(liang)程時(shi)，每一(yi)(yi)分格都可(ke)(ke)(ke)以(yi)表(biao)(biao)(biao)(biao)示(shi)不同的(de)(de)(de)(de)功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)數(shu)。在讀數(shu)時(shi)，應(ying)先根(gen)據所選(xuan)(xuan)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)(liang)(liang)程U、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)(liang)程I以(yi)及標(biao)(biao)度(du)尺(chi)滿量(liang)(liang)(liang)程時(shi)的(de)(de)(de)(de)格數(shu)&，求(qiu)出每格瓦數(shu)（又稱功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)(biao)(biao)(biao)常(chang)數(shu)）C，然后再乘上(shang)(shang)指針(zhen)(zhen)偏轉的(de)(de)(de)(de)格數(shu)夕，就可(ke)(ke)(ke)得到(dao)所測功(gong)(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)P.

HYDAC    備件    6040852ZBE30-05
KUBLER    旋轉編碼器    8.5020.D851.0360;DC24V;100mA
HYDAC    插頭    ZBE02
HYDAC    液壓個    1260884(0160D020BN3HC)
BENDER    絕緣檢測    IRDH275BU-635/B91065111
BENDER    絕緣檢測儀    IRDH265-4
HYDAC    溢流閥    M808 RV8--8-S-0-30
HYDAC    備件    SB330/400-10NBR
HYDAC    濾芯    0110R010BN4HC 濾芯
HYDAC    備件    SAF32M12T330A-S309
HYDAC    儲能器    SB330-10A/112A9-330A
HYDAC    濾芯    0060D010BN4HC
HYDAC    濾芯    2600 R 005 BN4HC/-B6SFREE-03511204
HYDAC    低壓管路過濾器    LPFBN/HC55 EA03D1X/L-24
KUBLER    編碼器    8.F3673.2421.G312
HYDAC    高壓球閥    KHM-50-F6-11141-06X
HYDAC    調速器過濾器濾芯    0330D010 BH4HC/-SFREE
HYDAC    過濾器濾芯    PART NO.:310452
HYDAC    濾芯    0500R010BN/HC S0105
HYDAC    濾芯    0240D010BN4HC/-V
BENDER    Circuit Relay    RCMA 420-D-2  art number: B 9404 3002
BENDER    備件    VME421H-D-1
HYDAC    濾芯    0280D010BN4HC
HYDAC    皮囊蓄能器    SB330H-20A1/112A9-330A
HYDAC    濾芯    1200R003BN4HC
HYDAC    壓力開關    EDS348-5-400-Y00
HYDAC    高壓球閥    KHB G3/8-1212-03X
KUBLER    備件    8.A02H.3A50.1024.C006    5-30VDC 100ma
HYDAC    濾芯    RV-40-01/0
HYDAC    電器件    K406 374929
HYDAC    傳感器插頭    ZBE08
BENDER    絕緣監測儀    IRDH275B-435
HYDAC    液位計    FSK-254-2.X/O/FT200/12/24
BENDER    漏電保護器    W3-S105
HYDAC    濾芯    1.08.39D06ECO/C
HYDAC    球閥    PN250BAR KHB-25SR-1134
HYDAC    SENSOR    HAD7446-A-250-000
KUBLER    電器件    BMG DN25-PN40-VK-M280-B60
HYDAC    換向閥    CXK02-2/2-FC-3/40/016/112PP
HYDAC    傳感器    EDS3346-3-0010-000-F1
HYDAC    壓力表    HAD 5001-250-1-1-200
BENDER    控制器    IRDH375-435
BENDER    絕緣故障評估儀    EDS461-D-2
BENDER    電源    AN450
HYDAC    接頭    ZBM300
HYDAC    球閥    KHNVN-G2-2233-12X球閥
HYDAC    壓力傳感器    EDS3348-5-0016-000-F1
HYDAC    濾芯    0330R010BN/HC/-B6
HYDAC    壓力傳感器    EDS348-5-016-Y00
HYDAC    開關    EDS346-3-250-000
HYDAC    數字壓力顯示儀    EDS 3346-3-0016-000-F1
HYDAC    機電    EDS3448-5-0250-Y00
BENDER    備件    AKS470
HYDAC    傳感器    ENS311P-8-0250-000-K
HYDAC    濾芯    I/CJ-D 0330 D 025W/HC
HYDAC    濾芯    0990 D 010 BN4HC
HYDAC    壓力傳感器    EDS3446-3-0600-000
BENDER    編碼器    RCM470DY B94022025
HYDAC    壓差傳感器    VMF 2，5 LZ.1/-AV
HYDAC    插座    ZBE03  同HYDAC-1030
HYDAC    回油濾油器    RFBN/HC240DE10D1.X/-L24
HYDAC    冷卻器    HEX S615-30-00/G1"
HYDAC    高壓過濾器濾芯    0660D010BN4HC
HYDAC    濾芯    0330R010BN4HC
BENDER    外接報警顯示和測試單元    MK2007CBM-CN
BENDER    控制器    UG140P   B916382
BENDER    備件    IR420-D4-1 B71016409
BENDER    絕緣監示裝置    IRDH275-435
BENDER    絕緣監示裝置    IRDH275-435
HYDAC    壓力開關    EDS3346-2-06.0-000-F1
HYDAC    數字顯示儀    HDA 5500-0-1-DC-000
HYDAC    接頭    ZBM300
HYDAC    過濾器    2600 R 010 BN4HC
HYDAC    熱電阻    TFP100 904696
HYDAC    濾芯    HC9600FKN16H
BENDER    備件    A.No:B913054 AGH675S-7 Serial No:0808160977
HYDAC    壓力油過濾器    DFBN/HC-240-TF5D1.1/L24
HYDAC    溫度繼電器    ETS388-5-100-000+TFP100+ZBE08+ZBM300
HYDAC    壓力傳感器插頭    ZBE06
HYDAC    傳感器    EDS3446-3-0100-000
BENDER    絕緣故障評估儀    EDS460-D-1
BENDER    絕緣檢測互感器    W2-S70
HYDAC    主冷卻水循環泵電機    3330389  CRI5-4
BENDER    繼電器    IR420-D4-2
HYDAC    傳感器    ETS1701-100-000
HYDAC    傳感器    ETS1701-100-000
HYDAC    Accumulator    SB330A-130A1/112A-330A
HYDAC    濾芯    2600R020BN4HC
HYDAC    濾芯    0160R010BN4HC
HYDAC    濾芯    RF BN/HC950D010D1.X/-L24
BENDER    監視器    RCMS460-D1
HYDAC    備件    HDA4445-A-016-000+ZBE01
BENDER    備件    9604-1121
HYDAC    壓力開關    EDS3346-3-0016-000-F1
HYDAC    球閥    KHB-16SR-1212-01X
HYDAC    傳感器    EDS348-5-016-000
HYDAC    壓力傳感器    HDA3840-A-400-124 (6M)
HYDAC    球閥    I/N:KHB-22LR-1212-01X
BENDER    醫用IT隔離電源    AN450
HYDAC    密封圈    Seal kit NBR*SB330/400 2 5-6l
HYDAC    開關    EDS344-3-016-000
HYDAC    插座    ZBE03  同HYDAC-1030
KUBLER    編碼器    8.5020.0050.2048.S124
HYDAC    插頭    ZBE08
HYDAC    過濾器    NFBN/HC1310DP20D1.0/-L24
HYDAC    高壓濾油器    DF BN/HC500QE5D1.X/VL24
HYDAC    傳感器    ETS1701-100-000
KUBLER    編碼器    8.5868.12C2.C112 1509010275
HYDAC    過濾器濾    HC2296FKT18H50
HYDAC    備件    HDA3845-A-400-000
KUBLER    編碼器    8.3610.0060.1000.0018
HYDAC    溫度傳感器    ETS328-5-100-000
KUBLER    編碼器    8.5000.8358.2000
KUBLER    編碼器    8.5820.0500.1024.5035
BENDER    備件    IRDH275BM-727
HYDAC    高壓球閥    KHB-25SR-1212-01X
HYDAC    壓力開關    EDS 346-3-250-000
HYDAC    CODER    EDS348-5-400-000
HYDAC    傳感器    ETS 1701-100-000
HYDAC    開關    HDA4744-A-250-000
KUBLER    計數器    6.923.0100.300
KUBLER    編碼器    8.5850.1242.G102
HYDAC    濾芯    0280R020BN4HC
HYDAC    油管    M52*2；3560mm；G11/2" ST506230/3329406
HYDAC    濾芯    0240D005BN4HC
HYDAC    濾芯    0160D010BN3HC
HYDAC    備件    EDS344-3-250-000 
HYDAC    傳感器插頭    ZBE08
HYDAC    濾芯    0240R010BN4HC
HYDAC    壓差傳感器    VM 2 D.0/-L24 43/09 24V AC/DC
BENDER    電流監測器    RCMA420-D-1
HYDAC    傳感器    ETS1701-100-000
BENDER    附件    107TD47
HYDAC    蓄能器    SN400B-32FA/112A9-400
HYDAC    傳感器    EDS344-2-040-000
HYDAC    差壓監視    VD5LZ.1/-DB
BENDER    電源    AN450
HYDAC    濾芯    0950D010BH3/HC
HYDAC    截止閥    SAF32M12N330A-S309
KUBLER    編碼器    T8-5000.C820.2500
HYDAC    開關    EDS1691-N-B-250-000
KUBLER    編碼器    8500.8354.1000
BENDER    備件    B93010006 VMD420-D-2
KUBLER    編碼器    8.5020.4500.1024.A033
HYDAC    濾芯    V035233
HYDAC    壓力傳感器    EDS345-1-016-Y00  16bar  20-
HYDAC    流量開關    EVS 3104-A-0300-000
BENDER    接地檢測    IR470LY-40
HYDAC    聯軸節    KUPPLUNG28/38-38/24
HYDAC    備件    VD5LZ.1/-B0
HYDAC    合成纖維濾芯    1300R020BN3HC
HYDAC    SENSOR    HDA3840-A-350-Y24
HYDAC    壓力繼電器    EDS3448-3-0250-D00
HYDAC    電器個    ETS1701-100-Y00+TFP104-000+S.S
HYDAC    溫度傳感器    906170
HYDAC    傳感器    EDS344-3-250-000
BENDER    備件    IR420-D6-1
HYDAC    濾芯    1300 R 005 BN4HC濾芯
HYDAC    高壓球閥    HKB-M22X1.5-1112-01X
KUBLER    配套連接器    8.5852.1232.G121
HYDAC    壓力發訊器    EDS300
HYDAC    濾芯    0500D010BH4HC
HYDAC    附個    減壓閥635412
KUBLER    編碼器    8.5020.D851.1024.W06.EX
BENDER    備件    W465-A26
EMG    備件    1250-6OII 220~380V 0.4KW 1.0~0.7A
BENDER    絕緣檢測    IRDH275BM-727/B91065120
KUBLER    編碼器    8.A02H.3182.5000
HYDAC    濾芯    0160R010BN4HC
HYDAC    壓力繼電器    HDA3844-A-400-000+ZBE02
HYDAC    插座    ZBE03  同HYDAC-1030
HYDAC    傳感器    HDA4445-A-250-000
HYDAC    濾芯    01600D010BN4HC
HYDAC    繼電器    EDS3398-5-01.0-V00-E1
BENDER    絕緣監視器    IRDH275-435
HYDAC    壓力傳感器    HDA3840-A-350-124
BENDER    電源    AN450
HYDAC    開關    HDA4744-A-250-000
HYDAC    接頭    ZBM14
HYDAC    備件    HDA-4744-A-400-00
HYDAC    金屬膠管    549238 RF3-C/0/1/2/2.5450LG
HYDAC    SENSOR    ETS7246-A-000
HYDAC    壓力開關    EDS3346-3-0016-000-F1
HYDAC    SENSOR    EDS3446-3-0400-Y00
HYDAC    壓力變送器    EDS-3346-3-0016-000-F1
HYDAC    濾芯    0240D010BH4HC
HYDAC    傳感器    ETS1701-100-000
KUBLER    編碼器    8.5821.1C3E.1024
BENDER    檢測儀    IRDH275B-435
HYDAC    備件    RFNBN/HC100BD10LZ1.0/-DB-VW
HYDAC    濾芯    2600R003BN4HC
HYDAC    繼電器    EDS344-2-016-000
BENDER    絕緣檢測互感器    W2-S70
HYDAC    壓力繼電器    EDS3346-3-0100-000
HYDAC    溫度開關    TFP104-000
HYDAC    開關    EDS 344-3-250-000
HYDAC    備件    0060D020BH4HC(H30/95-2)
HYDAC    傳感器    EDS348-5-016-000
HYDAC    濾芯    0280D005BH4HC  濾芯
HYDAC    油壓表    MS2A2.1/180/2610
BENDER    電流互感器    W35AB
HYDAC    濾芯    2600 R 010 P/HC-B6
HYDAC    濾芯    LH0660D020BN3HC
HYDAC    壓力開關    EDS345-1-250-000
BENDER    備件    IRDH265-422
HYDAC    開關    ENS 3118-5-0520-000-K
HYDAC    球閥    KHNVS-RP3/8-2233-12X  序列號702165
HYDAC    濾芯    0240D005BN4HC
BENDER    備件    IRDH275BM-727
BENDER    備件    RCMA472LY-21
HYDAC    傳感器    HDA4444-A-600-Y-ZBE03
KUBLER    編碼器    8.5863.0000.G200
BENDER    備件    SUA 145 B93015508
HYDAC    壓力開關    EDS3346-2-0010-000-F1
HYDAC    濾芯    0660R05BN4HC/-KB
BENDER    備件    IR125Y-2  B91023013
BENDER    控制器    IRDH375-435
HYDAC    蓄能器    SB330-4A1/112A9-330A
BENDER    備件    IR145Y-421
BENDER    400V欠壓監視    B933702 SUD472
BENDER    電源    AN450
BENDER    絕緣檢測    IRDH275BU-635/B91065111
HYDAC    過濾器    DFP BH/HC 660QD10D1.0/L24
HYDAC    壓力傳感器    ETS 3868-5-000-000
BENDER    絕緣監視器    IRDH275-435
BENDER    檢測儀    IRDH275B-435
HYDAC    電磁閥閥芯    17/07 WS/6Z 01-C-N   3026192.38/06
HYDAC    濾芯    1300 R 005 BN3HC
HYDAC    濾芯    0850R100W/HC
HYDAC    開關    ETS1701-100-000+TFP100+S.S
HYDAC    濾芯    0240 D 010 BN4HC
HYDAC    閥    ERVE-R1/2-10X
BENDER    互感器    W35AB 訂貨號B98080016
HYDAC    壓力開關    VD8D 0/-LED(116psi 8bar G1/2 24VDC)
HYDAC    壓力傳感器    HAD3745-A-100-174
BENDER    備件    B91065104 W

用(yong)于磁(ci)(ci)(ci)化開(kai)磁(ci)(ci)(ci)路(lu)軟磁(ci)(ci)(ci)材料試(shi)樣(yang)。又(you)稱軟磁(ci)(ci)(ci)磁(ci)(ci)(ci)導計。其結構(gou)見(jian)圖1。材料試(shi)樣(yang)夾在兩(liang)U狀(zhuang)(zhuang)磁(ci)(ci)(ci)軛(e)(e)之間，并(bing)穿過均勻分布的(de)(de)磁(ci)(ci)(ci)化線圈。磁(ci)(ci)(ci)軛(e)(e)由硅鋼(gang)(gang)(gang)片疊(die)制(zhi)而成。用(yong)中場(chang)磁(ci)(ci)(ci)導計代替愛(ai)潑斯坦儀測量(liang)(liang)(liang)硅鋼(gang)(gang)(gang)片等的(de)(de)磁(ci)(ci)(ci)特性和鐵(tie)損，無需剪(jian)裁，可(ke)節省大量(liang)(liang)(liang)試(shi)樣(yang)材料，并(bing)能方便地裝入(ru)和取出(chu)試(shi)樣(yang)。較簡單的(de)(de)中場(chang)磁(ci)(ci)(ci)導計只使(shi)用(yong)一個(ge)U狀(zhuang)(zhuang)磁(ci)(ci)(ci)軛(e)(e)，試(shi)樣(yang)可(ke)采用(yong)更小尺寸的(de)(de)切(qie)片（見(jian)硅鋼(gang)(gang)(gang)片磁(ci)(ci)(ci)特性測量(liang)(liang)(liang)）。
由(you)(you)于鐵(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)(zhi)的(de)(de)作用(yong),導(dao)致螺(luo)(luo)線(xian)(xian)(xian)(xian)(xian)管內(nei)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)均(jun)(jun)勻(yun)(yun)性遭(zao)(zao)到(dao)(dao)破(po)壞,磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)量(liang)線(xian)(xian)(xian)(xian)(xian)圈常(chang)數(shu)由(you)(you)此(ci)(ci)(ci)(ci)產(chan)生變化(hua),使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)性能測(ce)量(liang)結果嚴(yan)重失(shi)真.所以,用(yong)中(zhong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)計來(lai)測(ce)量(liang)軟磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)棒形(xing)試(shi)(shi)(shi)樣(yang)(yang)(yang)(yang)的(de)(de)各項(xiang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)性能是不(bu)適宜的(de)(de).當(dang)把一個鐵(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)(zhi)封閉的(de)(de)盒(he)子放(fang)人均(jun)(jun)勻(yun)(yun)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)中(zhong)，則(ze)盒(he)壁與(yu)其中(zhong)的(de)(de)空(kong)間(jian)(jian)構(gou)成了并聯磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)路。由(you)(you)于鐵(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)(zhi)的(de)(de)相對磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)率遠遠大(da)(da)于空(kong)氣的(de)(de)相對磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)率，因(yin)此(ci)(ci)(ci)(ci)，空(kong)腔中(zhong)的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)阻就遠遠大(da)(da)于盒(he)壁的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)阻，所以磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)線(xian)(xian)(xian)(xian)(xian)幾(ji)乎(hu)全部從(cong)盒(he)壁內(nei)通過(guo)(guo)(guo)，而空(kong)腔內(nei)僅有極(ji)(ji)(ji)少數(shu)的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)線(xian)(xian)(xian)(xian)(xian)通過(guo)(guo)(guo), 因(yin)此(ci)(ci)(ci)(ci)，空(kong)腔內(nei)的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)很弱。同(tong)樣(yang)(yang)(yang)(yang)的(de)(de)原因(yin)，當(dang)螺(luo)(luo)管中(zhong)有鐵(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)(zhi)試(shi)(shi)(shi)樣(yang)(yang)(yang)(yang)時，螺(luo)(luo)管中(zhong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)均(jun)(jun)勻(yun)(yun)性已(yi)遭(zao)(zao)到(dao)(dao)破(po)壞，絕大(da)(da)部分磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)線(xian)(xian)(xian)(xian)(xian)也應通過(guo)(guo)(guo)鐵(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)(zhi)試(shi)(shi)(shi)樣(yang)(yang)(yang)(yang)，在(zai)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)開路情(qing)況(kuang)(kuang)下只有少數(shu)的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)線(xian)(xian)(xian)(xian)(xian)通過(guo)(guo)(guo)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)量(liang)線(xian)(xian)(xian)(xian)(xian)圈的(de)(de)間(jian)(jian)隙(xi)，因(yin)此(ci)(ci)(ci)(ci)，測(ce)得(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)(qiang)(qiang)度就很小(xiao)；在(zai)閉合磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)路情(qing)況(kuang)(kuang)下由(you)(you)于磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)計磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)扼(e)體和(he)鐵(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)(zhi)試(shi)(shi)(shi)樣(yang)(yang)(yang)(yang)共同(tong)作用(yong)，使(shi)較(jiao)(jiao)多的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)線(xian)(xian)(xian)(xian)(xian)通過(guo)(guo)(guo)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)量(liang)線(xian)(xian)(xian)(xian)(xian)圈的(de)(de)間(jian)(jian)隙(xi)，因(yin)此(ci)(ci)(ci)(ci)，測(ce)得(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)(qiang)(qiang)度就較(jiao)(jiao)大(da)(da) [1] 。強(qiang)(qiang)(qiang)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)計于磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)永(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)（即硬磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)）試(shi)(shi)(shi)樣(yang)(yang)(yang)(yang)。又(you)稱永(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)計。由(you)(you)于永(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)在(zai)測(ce)量(liang)與(yu)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)時要求(qiu)有很強(qiang)(qiang)(qiang)而集(ji)中(zhong)的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)，且永(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料(liao)試(shi)(shi)(shi)樣(yang)(yang)(yang)(yang)多是開路形(xing)式(shi)，故專(zhuan)門制(zhi)造(zao)了這種磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)計。強(qiang)(qiang)(qiang)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)計由(you)(you)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極(ji)(ji)(ji)、磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛(e)、磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)線(xian)(xian)(xian)(xian)(xian)圈等構(gou)成（圖2），試(shi)(shi)(shi)樣(yang)(yang)(yang)(yang)夾在(zai)可動磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極(ji)(ji)(ji)與(yu)固定(ding)(ding)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極(ji)(ji)(ji)之間(jian)(jian)。為使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)集(ji)中(zhong)在(zai)試(shi)(shi)(shi)樣(yang)(yang)(yang)(yang)上，須使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛(e)消耗的(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)安匝盡量(liang)少，因(yin)此(ci)(ci)(ci)(ci)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛(e)通常(chang)采用(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)率高的(de)(de)材料(liao)，并且截面(mian)較(jiao)(jiao)大(da)(da)，制(zhi)作時要求(qiu)有較(jiao)(jiao)高的(de)(de)工藝水平。磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)線(xian)(xian)(xian)(xian)(xian)圈由(you)(you)直流電(dian)(dian)源供(gong)電(dian)(dian)，其容量(liang)可滿足產(chan)生足夠大(da)(da)的(de)(de)飽和(he)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)(qiang)(qiang)度Hm的(de)(de)需要。Hm一般取被測(ce)材料(liao)內(nei)稟(bing)矯頑(wan)力(li)Hcj的(de)(de)3～5倍，電(dian)(dian)源的(de)(de)穩(wen)定(ding)(ding)度應保(bao)證(zheng)在(zai)1分鐘內(nei)變化(hua)不(bu)超過(guo)(guo)(guo)0.1%。
計為(wei)快速檢(jian)驗和分選永磁(ci)材(cai)料(liao)，常采用對(dui)稱(cheng)雙軛磁(ci)導(dao)計結構。它的(de)(de)兩個U狀磁(ci)軛*對(dui)稱(cheng)，4個磁(ci)化(hua)(hua)線圈*相(xiang)同，并串聯在一起。未放(fang)入試樣(yang)時，左右兩氣(qi)隙(xi)內的(de)(de)磁(ci)通相(xiang)等，中(zhong)間氣(qi)隙(xi)內的(de)(de)磁(ci)通為(wei)零。在一邊(bian)氣(qi)隙(xi)中(zhong)放(fang)入試樣(yang)后，磁(ci)路平衡被(bei)破壞，中(zhong)間氣(qi)隙(xi)內存在有正比于試樣(yang)磁(ci)化(hua)(hua)強度的(de)(de)磁(ci)通。作用于試樣(yang)的(de)(de)磁(ci)場(chang)強度，可(ke)在另一邊(bian)氣(qi)隙(xi)內測(ce)得。如在一邊(bian)氣(qi)隙(xi)內放(fang)入標(biao)準試樣(yang)，則可(ke)對(dui)放(fang)在另一邊(bian)氣(qi)隙(xi)中(zhong)的(de)(de)試樣(yang)進行(xing)分選
數(shu)字電(dian)(dian)容(rong)表(biao)(biao)是(shi)一(yi)(yi)(yi)種智能(neng)型(xing)、性(xing)(xing)能(neng)穩定、高(gao)可(ke)靠性(xing)(xing)、3 5/6數(shu)字多用(yong)(yong)(yong)表(biao)(biao)，儀(yi)表(biao)(biao)采(cai)用(yong)(yong)(yong)33mm字高(gao)LCD顯(xian)(xian)示(shi)器(qi)，讀數(shu)清晰(xi)，顯(xian)(xian)示(shi)直觀(guan)，操作(zuo)方便(bian)(bian)，可(ke)用(yong)(yong)(yong)來測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)電(dian)(dian)阻、電(dian)(dian)容(rong)、二極管及(ji)(ji)通斷測(ce)(ce)試(shi)(shi)(shi)；同時(shi)還設有(you)單位(wei)符號顯(xian)(xian)示(shi)、數(shu)據保(bao)持、大小値測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)，自動/手(shou)動量(liang)(liang)(liang)(liang)(liang)程轉(zhuan)換、自動斷電(dian)(dian)、自動識別及(ji)(ji)報(bao)警功能(neng)。整機(ji)采(cai)用(yong)(yong)(yong)了一(yi)(yi)(yi)個能(neng)直接(jie)驅(qu)動LCD微處理器(qi)和雙(shuang)(shuang)積分A/D轉(zhuan)換集成電(dian)(dian)路，一(yi)(yi)(yi)個提供高(gao)分辨力、高(gao)精度(du)的(de)(de)(de)(de)數(shu)字顯(xian)(xian)示(shi)驅(qu)動，該(gai)表(biao)(biao)功能(neng)齊全，測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)準確(que)度(du)高(gao)，使用(yong)(yong)(yong)方便(bian)(bian)，是(shi)實驗(yan)室(shi)、工(gong)廠、無線電(dian)(dian)愛好者及(ji)(ji)家庭的(de)(de)(de)(de)理想工(gong)具(ju)。確(que)認電(dian)(dian)池和保(bao)險絲已正確(que)安裝；要(yao)測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)電(dian)(dian)容(rong)在(zai)(zai)(zai)測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)前已充分放(fang)電(dian)(dian)；要(yao)測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)電(dian)(dian)容(rong)，其極性(xing)(xing)要(yao)與測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)端子(zi)(zi)的(de)(de)(de)(de)極性(xing)(xing)一(yi)(yi)(yi)致；請一(yi)(yi)(yi)定注意(yi)，不(bu)(bu)要(yao)在(zai)(zai)(zai)測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)端子(zi)(zi)加(jia)載(zai)電(dian)(dian)壓，否則將導(dao)致嚴重(zhong)的(de)(de)(de)(de)損害；不(bu)(bu)要(yao)嘗試(shi)(shi)(shi)短接(jie)兩個輸入端子(zi)(zi)，否則將極大的(de)(de)(de)(de)浪費電(dian)(dian)池電(dian)(dian)量(liang)(liang)(liang)(liang)(liang)，并(bing)以過載(zai)顯(xian)(xian)示(shi)；如果被(bei)測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)(de)電(dian)(dian)容(rong)器(qi)是(shi)未(wei)知的(de)(de)(de)(de)，請從小量(liang)(liang)(liang)(liang)(liang)程開始測(ce)(ce)量(liang)(liang)(liang)(liang)(liang)，并(bing)逐步加(jia)大直到得到合適的(de)(de)(de)(de)值。為快速檢驗(yan)和分選(xuan)永磁(ci)(ci)(ci)(ci)(ci)材料，常采(cai)用(yong)(yong)(yong)對稱雙(shuang)(shuang)軛磁(ci)(ci)(ci)(ci)(ci)導(dao)計結構。它(ta)的(de)(de)(de)(de)兩個U狀磁(ci)(ci)(ci)(ci)(ci)軛*對稱，4個磁(ci)(ci)(ci)(ci)(ci)化線圈*相同，并(bing)串聯在(zai)(zai)(zai)一(yi)(yi)(yi)起。未(wei)放(fang)入試(shi)(shi)(shi)樣(yang)(yang)(yang)時(shi)，左右兩氣(qi)(qi)隙內的(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)通相等，中間氣(qi)(qi)隙內的(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)通為零。在(zai)(zai)(zai)一(yi)(yi)(yi)邊氣(qi)(qi)隙中放(fang)入試(shi)(shi)(shi)樣(yang)(yang)(yang)后，磁(ci)(ci)(ci)(ci)(ci)路平衡被(bei)破壞(huai)，中間氣(qi)(qi)隙內存在(zai)(zai)(zai)有(you)正比于試(shi)(shi)(shi)樣(yang)(yang)(yang)磁(ci)(ci)(ci)(ci)(ci)化強(qiang)度(du)的(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)通。作(zuo)用(yong)(yong)(yong)于試(shi)(shi)(shi)樣(yang)(yang)(yang)的(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)場強(qiang)度(du)，可(ke)在(zai)(zai)(zai)另一(yi)(yi)(yi)邊氣(qi)(qi)隙內測(ce)(ce)得。如在(zai)(zai)(zai)一(yi)(yi)(yi)邊氣(qi)(qi)隙內放(fang)入標(biao)準試(shi)(shi)(shi)樣(yang)(yang)(yang)，則可(ke)對放(fang)在(zai)(zai)(zai)另一(yi)(yi)(yi)邊氣(qi)(qi)隙中的(de)(de)(de)(de)試(shi)(shi)(shi)樣(yang)(yang)(yang)進行分選(xuan)。量(liang)(liang)(liang)(liang)(liang)程選(xuan)擇
選擇功(gong)(gong)(gong)(gong)率(lv)(lv)表的(de)量程(cheng)(cheng)(cheng)就是(shi)選擇功(gong)(gong)(gong)(gong)率(lv)(lv)表中的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)量程(cheng)(cheng)(cheng)和(he)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)量程(cheng)(cheng)(cheng)。使用時(shi)(shi)應使功(gong)(gong)(gong)(gong)率(lv)(lv)表中的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)量程(cheng)(cheng)(cheng)不(bu)小(xiao)于(yu)負(fu)(fu)載電(dian)(dian)(dian)(dian)(dian)流(liu)，電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)量程(cheng)(cheng)(cheng)不(bu)低于(yu)負(fu)(fu)載電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，而不(bu)能(neng)(neng)(neng)僅(jin)從功(gong)(gong)(gong)(gong)率(lv)(lv)量程(cheng)(cheng)(cheng)來(lai)考慮。例(li)如(ru)，兩(liang)只(zhi)功(gong)(gong)(gong)(gong)率(lv)(lv)表，量程(cheng)(cheng)(cheng)分別是(shi)IA、300V和(he)2A、150V，由計(ji)算可知其(qi)功(gong)(gong)(gong)(gong)率(lv)(lv)量程(cheng)(cheng)(cheng)均為(wei)300W，如(ru)果要測量一負(fu)(fu)載電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)為(wei)220V、電(dian)(dian)(dian)(dian)(dian)流(liu)為(wei)IA的(de)負(fu)(fu)載功(gong)(gong)(gong)(gong)率(lv)(lv)時(shi)(shi)應逸用IA、300V的(de)功(gong)(gong)(gong)(gong)率(lv)(lv)表，而2A、150V的(de)功(gong)(gong)(gong)(gong)率(lv)(lv)表雖功(gong)(gong)(gong)(gong)率(lv)(lv)量程(cheng)(cheng)(cheng)也大于(yu)負(fu)(fu)載功(gong)(gong)(gong)(gong)率(lv)(lv)，但是(shi)由于(yu)負(fu)(fu)載電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)高于(yu)功(gong)(gong)(gong)(gong)率(lv)(lv)表所能(neng)(neng)(neng)承(cheng)受(shou)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)150V，故不(bu)能(neng)(neng)(neng)使用。所以，在(zai)測量功(gong)(gong)(gong)(gong)率(lv)(lv)前要根據負(fu)(fu)載的(de)額定電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)和(he)額定電(dian)(dian)(dian)(dian)(dian)流(liu)來(lai)選擇功(gong)(gong)(gong)(gong)率(lv)(lv)表的(de)量程(cheng)(cheng)(cheng)。
測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)線(xian)(xian)(xian)(xian)(xian)路電(dian)(dian)(dian)(dian)(dian)(dian)動系測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)機構的(de)(de)轉動力矩方向(xiang)和(he)(he)兩(liang)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)中(zhong)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)方向(xiang)有關，為了防(fang)止(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)動系功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表的(de)(de)指針反偏(pian)，接(jie)(jie)線(xian)(xian)(xian)(xian)(xian)時(shi)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)標(biao)有“·”號的(de)(de)端(duan)(duan)鈕(niu)必須接(jie)(jie)到電(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)正(zheng)，而(er)(er)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)另一(yi)端(duan)(duan)則(ze)與負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)相連，電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)以串(chuan)聯(lian)形式接(jie)(jie)入(ru)(ru)電(dian)(dian)(dian)(dian)(dian)(dian)路中(zhong)。功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)標(biao)有“·”號的(de)(de)端(duan)(duan)鈕(niu)可(ke)以接(jie)(jie)到電(dian)(dian)(dian)(dian)(dian)(dian)源端(duan)(duan)鈕(niu)的(de)(de)任一(yi)端(duan)(duan)上(shang)，而(er)(er)另一(yi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)端(duan)(duan)鈕(niu)則(ze)跨接(jie)(jie)到負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)的(de)(de)另一(yi)端(duan)(duan)，當(dang)負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)遠遠大(da)(da)于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)時(shi)，應(ying)采(cai)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)前接(jie)(jie)法(fa)。這時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)是負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)和(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)之(zhi)和(he)(he)，功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)的(de)(de)是負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)和(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)之(zhi)和(he)(he)。如果負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)遠遠大(da)(da)于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)，則(ze)可(ke)以略(lve)去電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)分(fen)壓(ya)(ya)(ya)(ya)(ya)所(suo)造成(cheng)(cheng)的(de)(de)影(ying)響(xiang)(xiang)，測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)結(jie)果比(bi)較接(jie)(jie)近負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)的(de)(de)實際功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)值。當(dang)負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)遠遠小于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)時(shi)，應(ying)采(cai)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)后(hou)接(jie)(jie)法(fa) 。這時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)兩(liang)端(duan)(duan)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)雖然(ran)等(deng)于(yu)(yu)(yu)負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)，但電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)中(zhong)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)卻等(deng)于(yu)(yu)(yu)負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)與功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)中(zhong)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)之(zhi)和(he)(he)，測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)時(shi)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)讀數(shu)為負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)與電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)之(zhi)和(he)(he)。由(you)于(yu)(yu)(yu)此時(shi)負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)遠小于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)，所(suo)以電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)分(fen)流(liu)(liu)(liu)作用(yong)大(da)(da)大(da)(da)減小，其(qi)對測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)結(jie)果的(de)(de)影(ying)響(xiang)(xiang)也可(ke)以大(da)(da)為減小。如界被測(ce)(ce)(ce)(ce)(ce)負(fu)(fu)(fu)(fu)載(zai)(zai)(zai)(zai)本身功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)較大(da)(da)，可(ke)以不(bu)考慮功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表本身的(de)(de)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)對測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)結(jie)果的(de)(de)影(ying)響(xiang)(xiang)，則(ze)兩(liang)種(zhong)接(jie)(jie)法(fa)可(ke)以任意(yi)選(xuan)(xuan)擇。選(xuan)(xuan)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)前接(jie)(jie)法(fa)，因為功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表中(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)一(yi)般都小于(yu)(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)支路的(de)(de)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)。正(zheng)確讀數(shu)一(yi)般安裝(zhuang)式功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表為直讀單量(liang)(liang)程式，表上(shang)的(de)(de)示數(shu)即為功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)數(shu)。但便攜式功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表一(yi)般為多量(liang)(liang)程式，在表的(de)(de)標(biao)度(du)(du)尺(chi)上(shang)不(bu)直接(jie)(jie)標(biao)注(zhu)示數(shu)，只標(biao)注(zhu)分(fen)格(ge)。在選(xuan)(xuan)用(yong)不(bu)同的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)與電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)(liang)程時(shi)，每(mei)一(yi)分(fen)格(ge)都可(ke)以表示不(bu)同的(de)(de)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)數(shu)。在讀數(shu)時(shi)，應(ying)先根(gen)據(ju)所(suo)選(xuan)(xuan)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)(ya)量(liang)(liang)程U、電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)量(liang)(liang)程I以及(ji)標(biao)度(du)(du)尺(chi)滿量(liang)(liang)程時(shi)的(de)(de)格(ge)數(shu)&，求出每(mei)格(ge)瓦數(shu)（又(you)稱(cheng)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表常數(shu)）C，然(ran)后(hou)再乘(cheng)上(shang)指針偏(pian)轉的(de)(de)格(ge)數(shu)夕，就可(ke)得到所(suo)測(ce)(ce)(ce)(ce)(ce)功(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)P.用(yong)于(yu)(yu)(yu)磁(ci)(ci)化開磁(ci)(ci)路軟磁(ci)(ci)材料試(shi)樣(yang)(yang)。又(you)稱(cheng)軟磁(ci)(ci)磁(ci)(ci)導(dao)計。其(qi)結(jie)構見圖1。材料試(shi)樣(yang)(yang)夾在兩(liang)U狀(zhuang)磁(ci)(ci)軛之(zhi)間，并穿過均(jun)勻分(fen)布(bu)的(de)(de)磁(ci)(ci)化線(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)。磁(ci)(ci)軛由(you)硅鋼片(pian)疊(die)制而(er)(er)成(cheng)(cheng)。用(yong)中(zhong)場(chang)(chang)磁(ci)(ci)導(dao)計代替愛潑(po)斯坦儀測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)硅鋼片(pian)等(deng)的(de)(de)磁(ci)(ci)特性(xing)和(he)(he)鐵損(sun)，無需剪裁，可(ke)節省大(da)(da)量(liang)(liang)試(shi)樣(yang)(yang)材料，并能方便地(di)裝(zhuang)入(ru)(ru)和(he)(he)取出試(shi)樣(yang)(yang)。較簡單的(de)(de)中(zhong)場(chang)(chang)磁(ci)(ci)導(dao)計只使用(yong)一(yi)個(ge)U狀(zhuang)磁(ci)(ci)軛，試(shi)樣(yang)(yang)可(ke)采(cai)用(yong)更(geng)小尺(chi)寸(cun)的(de)(de)切片(pian)（見硅鋼片(pian)磁(ci)(ci)特性(xing)測(ce)(ce)(ce)(ce)(ce)量(liang)(liang)）。
由(you)(you)于(yu)(yu)(yu)(yu)鐵磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質的(de)(de)(de)(de)(de)(de)作用(yong),導(dao)(dao)致(zhi)螺線(xian)(xian)(xian)(xian)管內(nei)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)均勻性(xing)(xing)遭到破(po)壞,磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)測(ce)(ce)量(liang)(liang)(liang)(liang)線(xian)(xian)(xian)(xian)圈常數由(you)(you)此(ci)產生(sheng)變(bian)化(hua)(hua),使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)性(xing)(xing)能測(ce)(ce)量(liang)(liang)(liang)(liang)結果嚴重(zhong)失(shi)真.所(suo)以,用(yong)中(zhong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)計來(lai)測(ce)(ce)量(liang)(liang)(liang)(liang)軟磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料棒(bang)形試樣(yang)(yang)的(de)(de)(de)(de)(de)(de)各項磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)性(xing)(xing)能是(shi)不(bu)適宜的(de)(de)(de)(de)(de)(de).當把一(yi)個鐵磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質封閉的(de)(de)(de)(de)(de)(de)盒(he)子(zi)放人均勻磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)中(zhong)，則盒(he)壁(bi)(bi)與其中(zhong)的(de)(de)(de)(de)(de)(de)空(kong)(kong)間(jian)(jian)構成了并聯磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)路(lu)。由(you)(you)于(yu)(yu)(yu)(yu)鐵磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質的(de)(de)(de)(de)(de)(de)相對(dui)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)率(lv)(lv)遠(yuan)遠(yuan)大(da)(da)于(yu)(yu)(yu)(yu)空(kong)(kong)氣的(de)(de)(de)(de)(de)(de)相對(dui)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)率(lv)(lv)，因(yin)(yin)此(ci)，空(kong)(kong)腔(qiang)中(zhong)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)阻就遠(yuan)遠(yuan)大(da)(da)于(yu)(yu)(yu)(yu)盒(he)壁(bi)(bi)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)阻，所(suo)以磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)幾乎全部從盒(he)壁(bi)(bi)內(nei)通過，而空(kong)(kong)腔(qiang)內(nei)僅有(you)(you)極少數的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)通過, 因(yin)(yin)此(ci)，空(kong)(kong)腔(qiang)內(nei)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)很弱。同樣(yang)(yang)的(de)(de)(de)(de)(de)(de)原因(yin)(yin)，當螺管中(zhong)有(you)(you)鐵磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質試樣(yang)(yang)時(shi)，螺管中(zhong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)均勻性(xing)(xing)已遭到破(po)壞，絕大(da)(da)部分(fen)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)也應(ying)通過鐵磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質試樣(yang)(yang)，在(zai)(zai)(zai)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)開(kai)路(lu)情況下(xia)只(zhi)有(you)(you)少數的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)通過磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)測(ce)(ce)量(liang)(liang)(liang)(liang)線(xian)(xian)(xian)(xian)圈的(de)(de)(de)(de)(de)(de)間(jian)(jian)隙，因(yin)(yin)此(ci)，測(ce)(ce)得磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)強(qiang)(qiang)度(du)(du)就很小；在(zai)(zai)(zai)閉合(he)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)路(lu)情況下(xia)由(you)(you)于(yu)(yu)(yu)(yu)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)計磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)扼(e)體和鐵磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質試樣(yang)(yang)共同作用(yong)，使(shi)較(jiao)多的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)(li)線(xian)(xian)(xian)(xian)通過磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)測(ce)(ce)量(liang)(liang)(liang)(liang)線(xian)(xian)(xian)(xian)圈的(de)(de)(de)(de)(de)(de)間(jian)(jian)隙，因(yin)(yin)此(ci)，測(ce)(ce)得磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)強(qiang)(qiang)度(du)(du)就較(jiao)大(da)(da) [1] 。強(qiang)(qiang)場(chang)(chang)(chang)(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)計于(yu)(yu)(yu)(yu)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)永磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料（即(ji)硬磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料）試樣(yang)(yang)。又(you)稱永磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)計。由(you)(you)于(yu)(yu)(yu)(yu)永磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料在(zai)(zai)(zai)測(ce)(ce)量(liang)(liang)(liang)(liang)與磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)時(shi)要求有(you)(you)很強(qiang)(qiang)而集中(zhong)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)，且(qie)(qie)永磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材料試樣(yang)(yang)多是(shi)開(kai)路(lu)形式，故專門制造了這種磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)計。強(qiang)(qiang)場(chang)(chang)(chang)(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)計由(you)(you)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極、磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛、磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)線(xian)(xian)(xian)(xian)圈等構成（圖2），試樣(yang)(yang)夾(jia)在(zai)(zai)(zai)可動磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極與固(gu)定磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極之間(jian)(jian)。為(wei)使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)集中(zhong)在(zai)(zai)(zai)試樣(yang)(yang)上(shang)，須使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛消耗的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)安匝盡量(liang)(liang)(liang)(liang)少，因(yin)(yin)此(ci)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛通常采用(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)率(lv)(lv)高的(de)(de)(de)(de)(de)(de)材料，并且(qie)(qie)截面較(jiao)大(da)(da)，制作時(shi)要求有(you)(you)較(jiao)高的(de)(de)(de)(de)(de)(de)工藝水平。磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)(hua)線(xian)(xian)(xian)(xian)圈由(you)(you)直流電源供電，其容(rong)量(liang)(liang)(liang)(liang)可滿(man)足(zu)產生(sheng)足(zu)夠(gou)大(da)(da)的(de)(de)(de)(de)(de)(de)飽和磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)(chang)(chang)強(qiang)(qiang)度(du)(du)Hm的(de)(de)(de)(de)(de)(de)需要。Hm一(yi)般取被測(ce)(ce)材料內(nei)稟矯頑力(li)(li)(li)Hcj的(de)(de)(de)(de)(de)(de)3～5倍，電源的(de)(de)(de)(de)(de)(de)穩(wen)定度(du)(du)應(ying)保(bao)證在(zai)(zai)(zai)1分(fen)鐘內(nei)變(bian)化(hua)(hua)不(bu)超過0.1%。
計為快速檢驗和分(fen)選永(yong)磁(ci)材料，常采用(yong)對(dui)稱(cheng)雙軛磁(ci)導計結構。它的(de)兩個U狀(zhuang)磁(ci)軛*對(dui)稱(cheng)，4個磁(ci)化線(xian)圈(quan)*相同，并串聯在一(yi)(yi)起。未放入試(shi)樣(yang)時，左(zuo)右兩氣(qi)隙(xi)內(nei)的(de)磁(ci)通相等，中間(jian)氣(qi)隙(xi)內(nei)的(de)磁(ci)通為零。在一(yi)(yi)邊(bian)氣(qi)隙(xi)中放入試(shi)樣(yang)后，磁(ci)路(lu)平(ping)衡被破壞，中間(jian)氣(qi)隙(xi)內(nei)存(cun)在有正比于試(shi)樣(yang)磁(ci)化強(qiang)度的(de)磁(ci)通。作用(yong)于試(shi)樣(yang)的(de)磁(ci)場強(qiang)度，可在另一(yi)(yi)邊(bian)氣(qi)隙(xi)內(nei)測得(de)。如在一(yi)(yi)邊(bian)氣(qi)隙(xi)內(nei)放入標準試(shi)樣(yang)，則(ze)可對(dui)放在另一(yi)(yi)邊(bian)氣(qi)隙(xi)中的(de)試(shi)樣(yang)進行(xing)分(fen)選
數(shu)字(zi)(zi)電(dian)(dian)容(rong)(rong)表(biao)是(shi)一(yi)(yi)種(zhong)智能型、性(xing)(xing)能穩定(ding)、高(gao)(gao)可(ke)(ke)(ke)靠(kao)性(xing)(xing)、3 5/6數(shu)字(zi)(zi)多(duo)用表(biao)，儀表(biao)采用33mm字(zi)(zi)高(gao)(gao)LCD顯示(shi)(shi)(shi)(shi)器(qi)，讀數(shu)清晰，顯示(shi)(shi)(shi)(shi)直(zhi)觀，操作(zuo)方(fang)便(bian)，可(ke)(ke)(ke)用來(lai)測(ce)(ce)量(liang)(liang)(liang)電(dian)(dian)阻(zu)、電(dian)(dian)容(rong)(rong)、二(er)極(ji)管(guan)及(ji)通(tong)斷測(ce)(ce)試(shi)；同(tong)時還設(she)有單位符號顯示(shi)(shi)(shi)(shi)、數(shu)據保(bao)持、大(da)小値測(ce)(ce)量(liang)(liang)(liang)，自(zi)動/手動量(liang)(liang)(liang)程(cheng)轉換(huan)、自(zi)動斷電(dian)(dian)、自(zi)動識別及(ji)報警功能。整機采用了一(yi)(yi)個能直(zhi)接驅(qu)動LCD微(wei)處(chu)理器(qi)和雙(shuang)積分A/D轉換(huan)集成電(dian)(dian)路，一(yi)(yi)個提(ti)供高(gao)(gao)分辨力(li)、高(gao)(gao)精度的(de)(de)(de)數(shu)字(zi)(zi)顯示(shi)(shi)(shi)(shi)驅(qu)動，該表(biao)功能齊全，測(ce)(ce)量(liang)(liang)(liang)準(zhun)確度高(gao)(gao)，使用方(fang)便(bian)，是(shi)實驗室(shi)、工廠、無線(xian)電(dian)(dian)愛(ai)好(hao)者及(ji)家庭的(de)(de)(de)理想(xiang)工具。確認(ren)電(dian)(dian)池和保(bao)險絲已(yi)(yi)正(zheng)確安裝(zhuang)；要(yao)測(ce)(ce)量(liang)(liang)(liang)的(de)(de)(de)電(dian)(dian)容(rong)(rong)在測(ce)(ce)量(liang)(liang)(liang)前已(yi)(yi)充分放(fang)(fang)(fang)電(dian)(dian)；要(yao)測(ce)(ce)量(liang)(liang)(liang)的(de)(de)(de)電(dian)(dian)容(rong)(rong)，其極(ji)性(xing)(xing)要(yao)與(yu)測(ce)(ce)量(liang)(liang)(liang)端子(zi)的(de)(de)(de)極(ji)性(xing)(xing)一(yi)(yi)致(zhi)；請(qing)一(yi)(yi)定(ding)注意，不要(yao)在測(ce)(ce)量(liang)(liang)(liang)端子(zi)加載電(dian)(dian)壓，否則將(jiang)導(dao)(dao)致(zhi)嚴重的(de)(de)(de)損害；不要(yao)嘗試(shi)短接兩個輸入(ru)端子(zi)，否則將(jiang)極(ji)大(da)的(de)(de)(de)浪費電(dian)(dian)池電(dian)(dian)量(liang)(liang)(liang)，并以過(guo)載顯示(shi)(shi)(shi)(shi)；如(ru)果被測(ce)(ce)量(liang)(liang)(liang)的(de)(de)(de)電(dian)(dian)容(rong)(rong)器(qi)是(shi)未知的(de)(de)(de)，請(qing)從小量(liang)(liang)(liang)程(cheng)開始測(ce)(ce)量(liang)(liang)(liang)，并逐步加大(da)直(zhi)到(dao)得到(dao)合適的(de)(de)(de)值。為快(kuai)速檢(jian)驗和分選永磁材(cai)料，常采用對稱(cheng)雙(shuang)軛磁導(dao)(dao)計結構。它的(de)(de)(de)兩個U狀磁軛*對稱(cheng)，4個磁化線(xian)圈(quan)*相同(tong)，并串聯在一(yi)(yi)起。未放(fang)(fang)(fang)入(ru)試(shi)樣時，左右兩氣(qi)隙(xi)(xi)(xi)內(nei)的(de)(de)(de)磁通(tong)相等，中(zhong)間氣(qi)隙(xi)(xi)(xi)內(nei)的(de)(de)(de)磁通(tong)為零。在一(yi)(yi)邊(bian)氣(qi)隙(xi)(xi)(xi)中(zhong)放(fang)(fang)(fang)入(ru)試(shi)樣后，磁路平(ping)衡被破(po)壞，中(zhong)間氣(qi)隙(xi)(xi)(xi)內(nei)存(cun)在有正(zheng)比于試(shi)樣磁化強(qiang)度的(de)(de)(de)磁通(tong)。作(zuo)用于試(shi)樣的(de)(de)(de)磁場強(qiang)度，可(ke)(ke)(ke)在另一(yi)(yi)邊(bian)氣(qi)隙(xi)(xi)(xi)內(nei)測(ce)(ce)得。如(ru)在一(yi)(yi)邊(bian)氣(qi)隙(xi)(xi)(xi)內(nei)放(fang)(fang)(fang)入(ru)標準(zhun)試(shi)樣，則可(ke)(ke)(ke)對放(fang)(fang)(fang)在另一(yi)(yi)邊(bian)氣(qi)隙(xi)(xi)(xi)中(zhong)的(de)(de)(de)試(shi)樣進行分選。量(liang)(liang)(liang)程(cheng)選擇
選(xuan)擇功(gong)率(lv)(lv)(lv)表(biao)(biao)的(de)(de)(de)量(liang)(liang)(liang)程(cheng)就是選(xuan)擇功(gong)率(lv)(lv)(lv)表(biao)(biao)中的(de)(de)(de)電(dian)(dian)(dian)流量(liang)(liang)(liang)程(cheng)和電(dian)(dian)(dian)壓(ya)量(liang)(liang)(liang)程(cheng)。使(shi)用時應(ying)使(shi)功(gong)率(lv)(lv)(lv)表(biao)(biao)中的(de)(de)(de)電(dian)(dian)(dian)流量(liang)(liang)(liang)程(cheng)不小于(yu)(yu)負載電(dian)(dian)(dian)流，電(dian)(dian)(dian)壓(ya)量(liang)(liang)(liang)程(cheng)不低于(yu)(yu)負載電(dian)(dian)(dian)壓(ya)，而不能僅從功(gong)率(lv)(lv)(lv)量(liang)(liang)(liang)程(cheng)來考慮。例如(ru)，兩只功(gong)率(lv)(lv)(lv)表(biao)(biao)，量(liang)(liang)(liang)程(cheng)分(fen)別是IA、300V和2A、150V，由計算可知其(qi)功(gong)率(lv)(lv)(lv)量(liang)(liang)(liang)程(cheng)均為(wei)300W，如(ru)果要(yao)測量(liang)(liang)(liang)一(yi)負載電(dian)(dian)(dian)壓(ya)為(wei)220V、電(dian)(dian)(dian)流為(wei)IA的(de)(de)(de)負載功(gong)率(lv)(lv)(lv)時應(ying)逸用IA、300V的(de)(de)(de)功(gong)率(lv)(lv)(lv)表(biao)(biao)，而2A、150V的(de)(de)(de)功(gong)率(lv)(lv)(lv)表(biao)(biao)雖功(gong)率(lv)(lv)(lv)量(liang)(liang)(liang)程(cheng)也大于(yu)(yu)負載功(gong)率(lv)(lv)(lv)，但是由于(yu)(yu)負載電(dian)(dian)(dian)壓(ya)高(gao)于(yu)(yu)功(gong)率(lv)(lv)(lv)表(biao)(biao)所能承受的(de)(de)(de)電(dian)(dian)(dian)壓(ya)150V，故不能使(shi)用。所以，在測量(liang)(liang)(liang)功(gong)率(lv)(lv)(lv)前要(yao)根據負載的(de)(de)(de)額(e)定電(dian)(dian)(dian)壓(ya)和額(e)定電(dian)(dian)(dian)流來選(xuan)擇功(gong)率(lv)(lv)(lv)表(biao)(biao)的(de)(de)(de)量(liang)(liang)(liang)程(cheng)。
測(ce)量(liang)(liang)(liang)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)系測(ce)量(liang)(liang)(liang)機構(gou)(gou)的(de)(de)(de)(de)(de)轉動(dong)力矩(ju)方(fang)向(xiang)和(he)兩(liang)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)中(zhong)(zhong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)方(fang)向(xiang)有關，為(wei)了防止(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)系功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)的(de)(de)(de)(de)(de)指針反偏(pian)，接線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)時(shi)功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)標(biao)有“·”號的(de)(de)(de)(de)(de)端(duan)(duan)鈕必須接到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)(de)正，而(er)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)(de)另一(yi)(yi)端(duan)(duan)則(ze)與負(fu)載(zai)(zai)相(xiang)連(lian)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)以(yi)(yi)串(chuan)聯形式(shi)(shi)(shi)接入(ru)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)(zhong)。功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)標(biao)有“·”號的(de)(de)(de)(de)(de)端(duan)(duan)鈕可(ke)(ke)(ke)以(yi)(yi)接到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源端(duan)(duan)鈕的(de)(de)(de)(de)(de)任一(yi)(yi)端(duan)(duan)上(shang)(shang)，而(er)另一(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)端(duan)(duan)鈕則(ze)跨接到(dao)負(fu)載(zai)(zai)的(de)(de)(de)(de)(de)另一(yi)(yi)端(duan)(duan)，當負(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻遠(yuan)遠(yuan)大于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻時(shi)，應(ying)采(cai)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)前接法(fa)。這時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是負(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)之(zhi)和(he)，功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)測(ce)量(liang)(liang)(liang)的(de)(de)(de)(de)(de)是負(fu)載(zai)(zai)功(gong)(gong)率(lv)(lv)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)功(gong)(gong)率(lv)(lv)之(zhi)和(he)。如果負(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻遠(yuan)遠(yuan)大于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻，則(ze)可(ke)(ke)(ke)以(yi)(yi)略去電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)分(fen)(fen)壓(ya)(ya)所(suo)造成的(de)(de)(de)(de)(de)影響，測(ce)量(liang)(liang)(liang)結果比較(jiao)(jiao)接近(jin)負(fu)載(zai)(zai)的(de)(de)(de)(de)(de)實際功(gong)(gong)率(lv)(lv)值(zhi)。當負(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻遠(yuan)遠(yuan)小(xiao)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻時(shi)，應(ying)采(cai)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)后接法(fa) 。這時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)兩(liang)端(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)雖然等(deng)于(yu)(yu)負(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，但電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)中(zhong)(zhong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)卻等(deng)于(yu)(yu)負(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)與功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)中(zhong)(zhong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)之(zhi)和(he)，測(ce)量(liang)(liang)(liang)時(shi)功(gong)(gong)率(lv)(lv)讀(du)(du)數(shu)為(wei)負(fu)載(zai)(zai)功(gong)(gong)率(lv)(lv)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)功(gong)(gong)率(lv)(lv)之(zhi)和(he)。由(you)(you)于(yu)(yu)此時(shi)負(fu)載(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻遠(yuan)小(xiao)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻，所(suo)以(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)分(fen)(fen)流(liu)作用(yong)大大減小(xiao)，其對測(ce)量(liang)(liang)(liang)結果的(de)(de)(de)(de)(de)影響也可(ke)(ke)(ke)以(yi)(yi)大為(wei)減小(xiao)。如界被測(ce)負(fu)載(zai)(zai)本(ben)身功(gong)(gong)率(lv)(lv)較(jiao)(jiao)大，可(ke)(ke)(ke)以(yi)(yi)不考慮(lv)功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)本(ben)身的(de)(de)(de)(de)(de)功(gong)(gong)率(lv)(lv)對測(ce)量(liang)(liang)(liang)結果的(de)(de)(de)(de)(de)影響，則(ze)兩(liang)種接法(fa)可(ke)(ke)(ke)以(yi)(yi)任意選(xuan)擇。選(xuan)用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)前接法(fa)，因為(wei)功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)中(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)的(de)(de)(de)(de)(de)功(gong)(gong)率(lv)(lv)一(yi)(yi)般(ban)都小(xiao)于(yu)(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)支路(lu)的(de)(de)(de)(de)(de)功(gong)(gong)率(lv)(lv)。正確讀(du)(du)數(shu)一(yi)(yi)般(ban)安裝(zhuang)式(shi)(shi)(shi)功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)為(wei)直讀(du)(du)單量(liang)(liang)(liang)程式(shi)(shi)(shi)，表(biao)(biao)(biao)上(shang)(shang)的(de)(de)(de)(de)(de)示數(shu)即為(wei)功(gong)(gong)率(lv)(lv)數(shu)。但便攜式(shi)(shi)(shi)功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)一(yi)(yi)般(ban)為(wei)多量(liang)(liang)(liang)程式(shi)(shi)(shi)，在(zai)(zai)表(biao)(biao)(biao)的(de)(de)(de)(de)(de)標(biao)度尺上(shang)(shang)不直接標(biao)注(zhu)示數(shu)，只標(biao)注(zhu)分(fen)(fen)格(ge)。在(zai)(zai)選(xuan)用(yong)不同的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)量(liang)(liang)(liang)程時(shi)，每一(yi)(yi)分(fen)(fen)格(ge)都可(ke)(ke)(ke)以(yi)(yi)表(biao)(biao)(biao)示不同的(de)(de)(de)(de)(de)功(gong)(gong)率(lv)(lv)數(shu)。在(zai)(zai)讀(du)(du)數(shu)時(shi)，應(ying)先根據所(suo)選(xuan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)量(liang)(liang)(liang)程U、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)量(liang)(liang)(liang)程I以(yi)(yi)及標(biao)度尺滿量(liang)(liang)(liang)程時(shi)的(de)(de)(de)(de)(de)格(ge)數(shu)&，求(qiu)出每格(ge)瓦數(shu)（又稱(cheng)功(gong)(gong)率(lv)(lv)表(biao)(biao)(biao)常(chang)數(shu)）C，然后再(zai)乘上(shang)(shang)指針偏(pian)轉的(de)(de)(de)(de)(de)格(ge)數(shu)夕(xi)，就(jiu)可(ke)(ke)(ke)得到(dao)所(suo)測(ce)功(gong)(gong)率(lv)(lv)P.用(yong)于(yu)(yu)磁化開磁路(lu)軟磁材(cai)料(liao)(liao)試(shi)(shi)樣。又稱(cheng)軟磁磁導(dao)計。其結構(gou)(gou)見圖1。材(cai)料(liao)(liao)試(shi)(shi)樣夾在(zai)(zai)兩(liang)U狀磁軛之(zhi)間，并穿過均勻分(fen)(fen)布的(de)(de)(de)(de)(de)磁化線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈(quan)(quan)(quan)(quan)(quan)。磁軛由(you)(you)硅(gui)鋼(gang)片(pian)(pian)疊制而(er)成。用(yong)中(zhong)(zhong)場(chang)磁導(dao)計代(dai)替愛潑斯坦(tan)儀測(ce)量(liang)(liang)(liang)硅(gui)鋼(gang)片(pian)(pian)等(deng)的(de)(de)(de)(de)(de)磁特(te)性和(he)鐵損(sun)，無(wu)需剪裁(cai)，可(ke)(ke)(ke)節省(sheng)大量(liang)(liang)(liang)試(shi)(shi)樣材(cai)料(liao)(liao)，并能方(fang)便地裝(zhuang)入(ru)和(he)取出試(shi)(shi)樣。較(jiao)(jiao)簡(jian)單的(de)(de)(de)(de)(de)中(zhong)(zhong)場(chang)磁導(dao)計只使用(yong)一(yi)(yi)個(ge)U狀磁軛，試(shi)(shi)樣可(ke)(ke)(ke)采(cai)用(yong)更小(xiao)尺寸的(de)(de)(de)(de)(de)切片(pian)(pian)（見硅(gui)鋼(gang)片(pian)(pian)磁特(te)性測(ce)量(liang)(liang)(liang)）。
由(you)(you)(you)于鐵(tie)(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)的(de)(de)(de)(de)(de)(de)作用,導(dao)(dao)(dao)(dao)(dao)致螺線(xian)管(guan)內(nei)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)均(jun)勻性遭(zao)到(dao)破壞,磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)(ce)(ce)量(liang)(liang)線(xian)圈(quan)(quan)(quan)常數(shu)由(you)(you)(you)此產(chan)生(sheng)(sheng)變化(hua),使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)性能(neng)測(ce)(ce)(ce)量(liang)(liang)結(jie)果(guo)嚴重失(shi)真.所(suo)以(yi),用中磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)計(ji)來測(ce)(ce)(ce)量(liang)(liang)軟磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材(cai)料(liao)(liao)棒形試(shi)(shi)(shi)樣(yang)的(de)(de)(de)(de)(de)(de)各項(xiang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)性能(neng)是(shi)不(bu)(bu)適(shi)宜的(de)(de)(de)(de)(de)(de).當(dang)把(ba)一個(ge)鐵(tie)(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)封閉的(de)(de)(de)(de)(de)(de)盒(he)子(zi)放人均(jun)勻磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)中，則盒(he)壁與其(qi)中的(de)(de)(de)(de)(de)(de)空(kong)間構(gou)成(cheng)了并聯磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)路(lu)。由(you)(you)(you)于鐵(tie)(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)的(de)(de)(de)(de)(de)(de)相對磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)率遠遠大(da)(da)于空(kong)氣的(de)(de)(de)(de)(de)(de)相對磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)率，因(yin)此，空(kong)腔中的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)阻就遠遠大(da)(da)于盒(he)壁的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)阻，所(suo)以(yi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)線(xian)幾(ji)乎全部(bu)從盒(he)壁內(nei)通(tong)(tong)過(guo)(guo)，而空(kong)腔內(nei)僅有(you)極(ji)少數(shu)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)線(xian)通(tong)(tong)過(guo)(guo), 因(yin)此，空(kong)腔內(nei)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)很弱。同樣(yang)的(de)(de)(de)(de)(de)(de)原因(yin)，當(dang)螺管(guan)中有(you)鐵(tie)(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)試(shi)(shi)(shi)樣(yang)時，螺管(guan)中磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)均(jun)勻性已(yi)遭(zao)到(dao)破壞，絕大(da)(da)部(bu)分磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)線(xian)也應通(tong)(tong)過(guo)(guo)鐵(tie)(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)試(shi)(shi)(shi)樣(yang)，在磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)開路(lu)情況下(xia)只有(you)少數(shu)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)線(xian)通(tong)(tong)過(guo)(guo)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)(ce)(ce)量(liang)(liang)線(xian)圈(quan)(quan)(quan)的(de)(de)(de)(de)(de)(de)間隙，因(yin)此，測(ce)(ce)(ce)得(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)度就很小(xiao)；在閉合(he)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)路(lu)情況下(xia)由(you)(you)(you)于磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)計(ji)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)扼體和鐵(tie)(tie)(tie)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)質(zhi)試(shi)(shi)(shi)樣(yang)共(gong)同作用，使(shi)較(jiao)多(duo)的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)力(li)(li)線(xian)通(tong)(tong)過(guo)(guo)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)測(ce)(ce)(ce)量(liang)(liang)線(xian)圈(quan)(quan)(quan)的(de)(de)(de)(de)(de)(de)間隙，因(yin)此，測(ce)(ce)(ce)得(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)度就較(jiao)大(da)(da) [1] 。強(qiang)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)計(ji)于磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)永(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材(cai)料(liao)(liao)（即硬磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材(cai)料(liao)(liao)）試(shi)(shi)(shi)樣(yang)。又稱永(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)計(ji)。由(you)(you)(you)于永(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材(cai)料(liao)(liao)在測(ce)(ce)(ce)量(liang)(liang)與磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)時要求有(you)很強(qiang)而集中的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)，且永(yong)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)材(cai)料(liao)(liao)試(shi)(shi)(shi)樣(yang)多(duo)是(shi)開路(lu)形式，故專門制造了這(zhe)種磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)計(ji)。強(qiang)場(chang)(chang)(chang)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)計(ji)由(you)(you)(you)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極(ji)、磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛、磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)線(xian)圈(quan)(quan)(quan)等(deng)構(gou)成(cheng)（圖(tu)2），試(shi)(shi)(shi)樣(yang)夾在可動磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極(ji)與固定(ding)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)極(ji)之間。為使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)集中在試(shi)(shi)(shi)樣(yang)上(shang)，須使(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛消耗的(de)(de)(de)(de)(de)(de)磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)安匝盡量(liang)(liang)少，因(yin)此磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)軛通(tong)(tong)常采用磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)導(dao)(dao)(dao)(dao)(dao)率高的(de)(de)(de)(de)(de)(de)材(cai)料(liao)(liao)，并且截(jie)面較(jiao)大(da)(da)，制作時要求有(you)較(jiao)高的(de)(de)(de)(de)(de)(de)工藝水平。磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)化(hua)線(xian)圈(quan)(quan)(quan)由(you)(you)(you)直流(liu)電(dian)源(yuan)供電(dian)，其(qi)容量(liang)(liang)可滿足產(chan)生(sheng)(sheng)足夠大(da)(da)的(de)(de)(de)(de)(de)(de)飽和磁(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)強(qiang)度Hm的(de)(de)(de)(de)(de)(de)需要。Hm一般(ban)取被測(ce)(ce)(ce)材(cai)料(liao)(liao)內(nei)稟矯頑力(li)(li)Hcj的(de)(de)(de)(de)(de)(de)3～5倍，電(dian)源(yuan)的(de)(de)(de)(de)(de)(de)穩(wen)定(ding)度應保證(zheng)在1分鐘內(nei)變化(hua)不(bu)(bu)超過(guo)(guo)0.1%。
計為快(kuai)速檢(jian)驗和分選永(yong)磁材料，常采(cai)用對(dui)稱雙軛磁導計結構(gou)。它的兩(liang)個U狀(zhuang)磁軛*對(dui)稱，4個磁化線(xian)圈(quan)*相(xiang)同，并串(chuan)聯(lian)在(zai)(zai)一(yi)(yi)(yi)起(qi)。未放(fang)入(ru)(ru)試(shi)樣時，左右兩(liang)氣(qi)(qi)(qi)隙(xi)(xi)內(nei)的磁通(tong)相(xiang)等(deng)，中間氣(qi)(qi)(qi)隙(xi)(xi)內(nei)的磁通(tong)為零。在(zai)(zai)一(yi)(yi)(yi)邊(bian)(bian)氣(qi)(qi)(qi)隙(xi)(xi)中放(fang)入(ru)(ru)試(shi)樣后，磁路平(ping)衡被破壞，中間氣(qi)(qi)(qi)隙(xi)(xi)內(nei)存(cun)在(zai)(zai)有正(zheng)比于(yu)試(shi)樣磁化強度(du)的磁通(tong)。作用于(yu)試(shi)樣的磁場(chang)強度(du)，可在(zai)(zai)另一(yi)(yi)(yi)邊(bian)(bian)氣(qi)(qi)(qi)隙(xi)(xi)內(nei)測(ce)得。如(ru)在(zai)(zai)一(yi)(yi)(yi)邊(bian)(bian)氣(qi)(qi)(qi)隙(xi)(xi)內(nei)放(fang)入(ru)(ru)標準(zhun)試(shi)樣，則可對(dui)放(fang)在(zai)(zai)另一(yi)(yi)(yi)邊(bian)(bian)氣(qi)(qi)(qi)隙(xi)(xi)中的試(shi)樣進行分選
數字(zi)電(dian)(dian)容(rong)表是(shi)一種智(zhi)能(neng)型、性能(neng)穩定、高(gao)可(ke)(ke)靠性、3 5/6數字(zi)多用表，儀(yi)表采用33mm字(zi)高(gao)LCD顯(xian)(xian)示(shi)器，讀(du)數清(qing)晰，顯(xian)(xian)示(shi)直(zhi)觀，操作方(fang)便(bian)(bian)，可(ke)(ke)用來測(ce)(ce)量(liang)電(dian)(dian)阻、電(dian)(dian)容(rong)、二極管及(ji)通斷(duan)測(ce)(ce)試(shi)(shi)；同時還設(she)有單位符號(hao)顯(xian)(xian)示(shi)、數據保持(chi)、大小(xiao)値測(ce)(ce)量(liang)，自動(dong)(dong)/手(shou)動(dong)(dong)量(liang)程轉(zhuan)換、自動(dong)(dong)斷(duan)電(dian)(dian)、自動(dong)(dong)識別及(ji)報(bao)警功(gong)(gong)能(neng)。整機采用了一個能(neng)直(zhi)接(jie)驅(qu)動(dong)(dong)LCD微處理器和雙(shuang)積分A/D轉(zhuan)換集成(cheng)電(dian)(dian)路(lu)，一個提供高(gao)分辨(bian)力、高(gao)精(jing)度的(de)(de)(de)數字(zi)顯(xian)(xian)示(shi)驅(qu)動(dong)(dong)，該表功(gong)(gong)能(neng)齊全(quan)，測(ce)(ce)量(liang)準確度高(gao)，使用方(fang)便(bian)(bian)，是(shi)實驗(yan)室(shi)、工(gong)廠、無線電(dian)(dian)愛(ai)好者及(ji)家庭的(de)(de)(de)理想(xiang)工(gong)具。確認電(dian)(dian)池和保險絲已正(zheng)確安裝(zhuang)；要(yao)測(ce)(ce)量(liang)的(de)(de)(de)電(dian)(dian)容(rong)在(zai)測(ce)(ce)量(liang)前(qian)已充分放(fang)電(dian)(dian)；要(yao)測(ce)(ce)量(liang)的(de)(de)(de)電(dian)(dian)容(rong)，其極性要(yao)與測(ce)(ce)量(liang)端(duan)子(zi)的(de)(de)(de)極性一致(zhi)；請一定注(zhu)意，不要(yao)在(zai)測(ce)(ce)量(liang)端(duan)子(zi)加載(zai)電(dian)(dian)壓，否則(ze)將(jiang)導致(zhi)嚴重的(de)(de)(de)損害；不要(yao)嘗試(shi)(shi)短(duan)接(jie)兩(liang)個輸入(ru)端(duan)子(zi)，否則(ze)將(jiang)極大的(de)(de)(de)浪費電(dian)(dian)池電(dian)(dian)量(liang)，并以過載(zai)顯(xian)(xian)示(shi)；如(ru)果被測(ce)(ce)量(liang)的(de)(de)(de)電(dian)(dian)容(rong)器是(shi)未(wei)知的(de)(de)(de)，請從小(xiao)量(liang)程開(kai)始測(ce)(ce)量(liang)，并逐步加大直(zhi)到得(de)到合適的(de)(de)(de)值。為快(kuai)速檢驗(yan)和分選永磁(ci)(ci)(ci)材料(liao)，常采用對(dui)稱(cheng)雙(shuang)軛(e)磁(ci)(ci)(ci)導計結構。它的(de)(de)(de)兩(liang)個U狀磁(ci)(ci)(ci)軛(e)*對(dui)稱(cheng)，4個磁(ci)(ci)(ci)化線圈*相同，并串聯在(zai)一起。未(wei)放(fang)入(ru)試(shi)(shi)樣時，左右兩(liang)氣隙(xi)內(nei)的(de)(de)(de)磁(ci)(ci)(ci)通相等(deng)，中(zhong)間氣隙(xi)內(nei)的(de)(de)(de)磁(ci)(ci)(ci)通為零。在(zai)一邊(bian)氣隙(xi)中(zhong)放(fang)入(ru)試(shi)(shi)樣后，磁(ci)(ci)(ci)路(lu)平衡被破壞，中(zhong)間氣隙(xi)內(nei)存在(zai)有正(zheng)比于(yu)試(shi)(shi)樣磁(ci)(ci)(ci)化強度的(de)(de)(de)磁(ci)(ci)(ci)通。作用于(yu)試(shi)(shi)樣的(de)(de)(de)磁(ci)(ci)(ci)場(chang)強度，可(ke)(ke)在(zai)另一邊(bian)氣隙(xi)內(nei)測(ce)(ce)得(de)。如(ru)在(zai)一邊(bian)氣隙(xi)內(nei)放(fang)入(ru)標準試(shi)(shi)樣，則(ze)可(ke)(ke)對(dui)放(fang)在(zai)另一邊(bian)氣隙(xi)中(zhong)的(de)(de)(de)試(shi)(shi)樣進行分選。量(liang)程選擇
選擇功率(lv)表(biao)的(de)量(liang)程(cheng)(cheng)(cheng)就是(shi)選擇功率(lv)表(biao)中(zhong)的(de)電(dian)流(liu)量(liang)程(cheng)(cheng)(cheng)和(he)電(dian)壓量(liang)程(cheng)(cheng)(cheng)。使用(yong)時應使功率(lv)表(biao)中(zhong)的(de)電(dian)流(liu)量(liang)程(cheng)(cheng)(cheng)不(bu)小(xiao)于(yu)負(fu)載(zai)電(dian)流(liu)，電(dian)壓量(liang)程(cheng)(cheng)(cheng)不(bu)低于(yu)負(fu)載(zai)電(dian)壓，而不(bu)能僅從功率(lv)量(liang)程(cheng)(cheng)(cheng)來(lai)考慮(lv)。例(li)如(ru)，兩只功率(lv)表(biao)，量(liang)程(cheng)(cheng)(cheng)分別是(shi)IA、300V和(he)2A、150V，由計算可知其功率(lv)量(liang)程(cheng)(cheng)(cheng)均為(wei)300W，如(ru)果要(yao)測量(liang)一(yi)負(fu)載(zai)電(dian)壓為(wei)220V、電(dian)流(liu)為(wei)IA的(de)負(fu)載(zai)功率(lv)時應逸用(yong)IA、300V的(de)功率(lv)表(biao)，而2A、150V的(de)功率(lv)表(biao)雖功率(lv)量(liang)程(cheng)(cheng)(cheng)也大于(yu)負(fu)載(zai)功率(lv)，但是(shi)由于(yu)負(fu)載(zai)電(dian)壓高于(yu)功率(lv)表(biao)所能承受(shou)的(de)電(dian)壓150V，故不(bu)能使用(yong)。所以(yi)，在測量(liang)功率(lv)前要(yao)根據負(fu)載(zai)的(de)額定(ding)電(dian)壓和(he)額定(ding)電(dian)流(liu)來(lai)選擇功率(lv)表(biao)的(de)量(liang)程(cheng)(cheng)(cheng)。
測(ce)(ce)(ce)量(liang)(liang)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)系(xi)測(ce)(ce)(ce)量(liang)(liang)機構的(de)(de)(de)(de)(de)(de)(de)轉動(dong)力矩方(fang)向和(he)(he)(he)(he)兩線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈中(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)方(fang)向有關，為了防止電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)系(xi)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)的(de)(de)(de)(de)(de)(de)(de)指針(zhen)反(fan)偏(pian)，接(jie)(jie)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)時(shi)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈標(biao)有“·”號的(de)(de)(de)(de)(de)(de)(de)端(duan)(duan)(duan)(duan)鈕(niu)必須接(jie)(jie)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源的(de)(de)(de)(de)(de)(de)(de)正(zheng)，而電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈的(de)(de)(de)(de)(de)(de)(de)另(ling)一(yi)端(duan)(duan)(duan)(duan)則(ze)與負(fu)(fu)載(zai)(zai)(zai)相連，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈以(yi)(yi)(yi)串聯形(xing)式接(jie)(jie)入電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)(zhong)。功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈標(biao)有“·”號的(de)(de)(de)(de)(de)(de)(de)端(duan)(duan)(duan)(duan)鈕(niu)可(ke)(ke)以(yi)(yi)(yi)接(jie)(jie)到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源端(duan)(duan)(duan)(duan)鈕(niu)的(de)(de)(de)(de)(de)(de)(de)任一(yi)端(duan)(duan)(duan)(duan)上，而另(ling)一(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)端(duan)(duan)(duan)(duan)鈕(niu)則(ze)跨接(jie)(jie)到(dao)負(fu)(fu)載(zai)(zai)(zai)的(de)(de)(de)(de)(de)(de)(de)另(ling)一(yi)端(duan)(duan)(duan)(duan)，當負(fu)(fu)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻遠(yuan)遠(yuan)大(da)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻時(shi)，應采用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈前(qian)接(jie)(jie)法(fa)。這(zhe)時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是(shi)負(fu)(fu)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)和(he)(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)之(zhi)(zhi)和(he)(he)(he)(he)，功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)測(ce)(ce)(ce)量(liang)(liang)的(de)(de)(de)(de)(de)(de)(de)是(shi)負(fu)(fu)載(zai)(zai)(zai)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)和(he)(he)(he)(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)之(zhi)(zhi)和(he)(he)(he)(he)。如果(guo)(guo)負(fu)(fu)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻遠(yuan)遠(yuan)大(da)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻，則(ze)可(ke)(ke)以(yi)(yi)(yi)略(lve)去電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈分(fen)(fen)壓(ya)(ya)所造成的(de)(de)(de)(de)(de)(de)(de)影響，測(ce)(ce)(ce)量(liang)(liang)結果(guo)(guo)比較接(jie)(jie)近(jin)負(fu)(fu)載(zai)(zai)(zai)的(de)(de)(de)(de)(de)(de)(de)實際功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)值(zhi)。當負(fu)(fu)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻遠(yuan)遠(yuan)小(xiao)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻時(shi)，應采用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈后(hou)接(jie)(jie)法(fa) 。這(zhe)時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈兩端(duan)(duan)(duan)(duan)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)雖(sui)然等于(yu)負(fu)(fu)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，但電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈中(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)卻等于(yu)負(fu)(fu)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)與功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈中(zhong)(zhong)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)之(zhi)(zhi)和(he)(he)(he)(he)，測(ce)(ce)(ce)量(liang)(liang)時(shi)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)讀(du)(du)數(shu)(shu)為負(fu)(fu)載(zai)(zai)(zai)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)之(zhi)(zhi)和(he)(he)(he)(he)。由于(yu)此時(shi)負(fu)(fu)載(zai)(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻遠(yuan)小(xiao)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻，所以(yi)(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈分(fen)(fen)流(liu)(liu)(liu)(liu)(liu)作用大(da)大(da)減小(xiao)，其對測(ce)(ce)(ce)量(liang)(liang)結果(guo)(guo)的(de)(de)(de)(de)(de)(de)(de)影響也可(ke)(ke)以(yi)(yi)(yi)大(da)為減小(xiao)。如界被測(ce)(ce)(ce)負(fu)(fu)載(zai)(zai)(zai)本(ben)身功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)較大(da)，可(ke)(ke)以(yi)(yi)(yi)不(bu)考慮功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)本(ben)身的(de)(de)(de)(de)(de)(de)(de)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)對測(ce)(ce)(ce)量(liang)(liang)結果(guo)(guo)的(de)(de)(de)(de)(de)(de)(de)影響，則(ze)兩種接(jie)(jie)法(fa)可(ke)(ke)以(yi)(yi)(yi)任意(yi)選擇。選用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈前(qian)接(jie)(jie)法(fa)，因為功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)中(zhong)(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈的(de)(de)(de)(de)(de)(de)(de)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)一(yi)般都(dou)小(xiao)于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)圈支路(lu)(lu)的(de)(de)(de)(de)(de)(de)(de)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)。正(zheng)確讀(du)(du)數(shu)(shu)一(yi)般安(an)裝式功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)為直讀(du)(du)單量(liang)(liang)程(cheng)式，表(biao)上的(de)(de)(de)(de)(de)(de)(de)示數(shu)(shu)即為功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)數(shu)(shu)。但便攜式功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)一(yi)般為多量(liang)(liang)程(cheng)式，在表(biao)的(de)(de)(de)(de)(de)(de)(de)標(biao)度尺上不(bu)直接(jie)(jie)標(biao)注(zhu)示數(shu)(shu)，只標(biao)注(zhu)分(fen)(fen)格。在選用不(bu)同的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)量(liang)(liang)程(cheng)時(shi)，每(mei)(mei)一(yi)分(fen)(fen)格都(dou)可(ke)(ke)以(yi)(yi)(yi)表(biao)示不(bu)同的(de)(de)(de)(de)(de)(de)(de)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)數(shu)(shu)。在讀(du)(du)數(shu)(shu)時(shi)，應先根據(ju)所選的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)量(liang)(liang)程(cheng)U、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)(liu)量(liang)(liang)程(cheng)I以(yi)(yi)(yi)及標(biao)度尺滿量(liang)(liang)程(cheng)時(shi)的(de)(de)(de)(de)(de)(de)(de)格數(shu)(shu)&，求出每(mei)(mei)格瓦數(shu)(shu)（又(you)稱(cheng)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)表(biao)常(chang)數(shu)(shu)）C，然后(hou)再乘(cheng)上指針(zhen)偏(pian)轉的(de)(de)(de)(de)(de)(de)(de)格數(shu)(shu)夕(xi)，就可(ke)(ke)得(de)到(dao)所測(ce)(ce)(ce)功(gong)(gong)(gong)(gong)(gong)(gong)率(lv)(lv)(lv)(lv)(lv)(lv)P.