全自動過濾器影響電(dian)(dian)導率可定(ding)性地反映(ying)水中(zhong)離(li)子的(de)多少(shao)，但還不(bu)能定(ding)量(liang)(liang)地反映(ying)水中(zhong)離(li)子的(de)成分和數量(liang)(liang)。其大小與水中(zhong)離(li)子的(de)多少(shao)、離(li)子的(de)摩爾(er)電(dian)(dian)導、離(li)子的(de)電(dian)(dian)荷數以及離(li)子的(de)遷移速度都有關系。

影響(xiang)電(dian)(dian)(dian)(dian)導(dao)率(lv)測(ce)定(ding)的(de)(de)因(yin)(yin)素主要(yao)(yao)(yao)有：1.與(yu)(yu)水(shui)(shui)(shui)(shui)的(de)(de)溫度變化有關，因(yin)(yin)為水(shui)(shui)(shui)(shui)溫升(sheng)(sheng)高，水(shui)(shui)(shui)(shui)的(de)(de)黏度降低，離子的(de)(de)遷移速度加快。因(yin)(yin)此(ci)測(ce)得電(dian)(dian)(dian)(dian)導(dao)率(lv)偏(pian)(pian)高，全(quan)自動(dong)過濾(lv)(lv)器反(fan)之就(jiu)(jiu)偏(pian)(pian)低，因(yin)(yin)而，就(jiu)(jiu)偏(pian)(pian)低，要(yao)(yao)(yao)進行校正(zheng)以水(shui)(shui)(shui)(shui)溫20度為參比；2.與(yu)(yu)水(shui)(shui)(shui)(shui)的(de)(de)流速有關，自動(dong)反(fan)沖洗(xi)過濾(lv)(lv)器因(yin)(yin)為測(ce)定(ding)電(dian)(dian)(dian)(dian)導(dao)率(lv)時將電(dian)(dian)(dian)(dian)極插(cha)入被測(ce)定(ding)水(shui)(shui)(shui)(shui)中(zhong)(zhong)，水(shui)(shui)(shui)(shui)的(de)(de)流速如果很低，水(shui)(shui)(shui)(shui)中(zhong)(zhong)雜質會容(rong)(rong)易粘附在電(dian)(dian)(dian)(dian)極上(shang)，造(zao)成電(dian)(dian)(dian)(dian)極污染(ran)。因(yin)(yin)此(ci)就(jiu)(jiu)影響(xiang)所測(ce)電(dian)(dian)(dian)(dian)導(dao)率(lv)的(de)(de)準確性，與(yu)(yu)水(shui)(shui)(shui)(shui)質污染(ran)影響(xiang)有關，主要(yao)(yao)(yao)是水(shui)(shui)(shui)(shui)接觸空氣，受到空氣中(zhong)(zhong)CO2，塵(chen)埃(ai)等的(de)(de)污染(ran)，水(shui)(shui)(shui)(shui)質越(yue)純其穩定(ding)性越(yue)差，越(yue)容(rong)(rong)易被污染(ran)，從而使(shi)水(shui)(shui)(shui)(shui)的(de)(de)電(dian)(dian)(dian)(dian)導(dao)率(lv)升(sheng)(sheng)高。

     全自動過濾器有的(de)(de)純水貯(zhu)槽因沒有保護好(hao)，從而(er)使電導(dao)率升高，為了有統一的(de)(de)標準，便于(yu)對比，二(er)級除鹽水的(de)(de)電導(dao)率的(de)(de)測(ce)定點，選在混(hun)合床出水的(de)(de)母管處，進行連續性的(de)(de)測(ce)定分(fen)析。