一、概述
河南邦(bang)信外加電(dian)流(liu)陰(yin)極保(bao)護恒(heng)電(dian)位儀通過參(can)比電(dian)(dian)(dian)(dian)(dian)極(ji)測(ce)量通電(dian)(dian)(dian)(dian)(dian)點電(dian)(dian)(dian)(dian)(dian)位(wei)，作為取(qu)樣信號與控(kong)制信號進行比較(jiao)，實(shi)現(xian)控(kong)制并調節極(ji)化電(dian)(dian)(dian)(dian)(dian)流輸(shu)出，使通電(dian)(dian)(dian)(dian)(dian)點電(dian)(dian)(dian)(dian)(dian)位(wei)得以保持在(zai)設定的控(kong)制電(dian)(dian)(dian)(dian)(dian)位(wei)上。邦(bang)信恒(heng)電(dian)(dian)(dian)(dian)(dian)位(wei)儀主要用于在(zai)電(dian)(dian)(dian)(dian)(dian)極(ji)過程動力學、電(dian)(dian)(dian)(dian)(dian)分析、電(dian)(dian)(dian)(dian)(dian)解、電(dian)(dian)(dian)(dian)(dian)鍍(du)、金屬相(xiang)分析，金屬腐蝕速度測(ce)量和(he)各種(zhong)腐蝕與防腐研究以及(ji)電(dian)(dian)(dian)(dian)(dian)化學保護參(can)數測(ce)試。
二、技術參數(shu)
l 輸入電壓：AC 380V或者AV 220V
l 頻率：50HZ
l 輸出電流：直流（0-75A）
l 輸出(chu)電壓：直(zhi)流（0-75V）
l 電(dian)位范圍：直流0-3000mV
l 溫度范圍：-20~+55℃
l 防護(hu)等(deng)級：IP20
l 恒電(dian)位跟蹤精度：≤ 5mV
l 恒(heng)電流精度： ≤ ± 2 ％
l 紋波系數： ≤ 5 ％
一(yi)、操作說明
1、預熱(re)：接(jie)通電源，預熱(re)15分鐘，以使儀器工作(zuo)在穩定狀態。
2、校(xiao)準：指電(dian)流表(biao)零(ling)點校(xiao)正。接通(tong)電(dian)源，預熱15分鐘后，按下“校準”鍵(jian)(11)，“通一斷”開關(13)置(zhi)于(yu)“斷”的位置(zhi)，電(dian)流(liu)量(liang)程(2)置于2mA檔(dang)，如電(dian)流表(3)顯示不為(wei)0.000可調節前面(mian)板上(shang)的(de)“調零”鍵(12)，使電流(liu)表顯示為0.000。
3、電(dian)極(ji)開路電(dian)位測(ce)量：即研究電(dian)極(ji)自(zi)然腐蝕電(dian)位測(ce)量，將(jiang)電(dian)極(ji)輸(shu)入(1)的引線連接到電解池體系，“通-斷(duan)”開關(13)置于“斷”位(wei)，接通(tong)電源(14)，打(da)開電源開關(15)，預(yu)熱15分(fen)鐘(zhong)后按下“恒電(dian)位”鍵(8)，電流鍵(11)，“參比”鍵(jian)(5)，數(shu)字表(4)顯(xian)示即為參比電極(ji)相對于研究電極(ji)的開路電位，即研究電極(ji)的自然腐蝕(shi)電位，但符號相反。
4、恒電位(wei)極化(hua)測(ce)量：按照上述第3項完(wan)成自然腐蝕電位測量后，接著按下“給定”鍵(5)，此時數(shu)字表(4)顯示的給定電位值，調(diao)(diao)節恒電位給定電位之粗調(diao)(diao)鍵(6)和細調鍵(7)，使數字表(4)顯示給定電位值，與(yu)自(zi)然腐蝕電位值相(xiang)等。“通(tong)-斷”關開(13)置(zhi)于“通”的(de)位(wei)(wei)置(zhi)，此時輔(fu)助電(dian)極的(de)電(dian)路接通，儀器開始(shi)實施恒電(dian)位(wei)(wei)運作，現在便可進行以自然腐(fu)蝕電(dian)位(wei)(wei)為起點的(de)恒電(dian)位(wei)(wei)極化測量。
