LF Pt 100是一款電(dian)(dian)(dian)導(dao)率(lv)(lv)探頭(tou),測量(liang)(liang)范圍高達 5 mS/cm,帶有(you)集(ji)成溫度(du)傳感(gan)器。水溶(rong)(rong)液的(de)(de)(de)電(dian)(dian)(dian)導(dao)率(lv)(lv)取決于(yu)溶(rong)(rong)解(jie)(jie)的(de)(de)(de)物質(zhi)。離(li)子(zi)負責溶(rong)(rong)液中電(dian)(dian)(dian)荷的(de)(de)(de)傳輸。純水幾乎(hu)不含離(li)子(zi),因(yin)此(ci)電(dian)(dian)(dian)導(dao)率(lv)(lv)極(ji)低。電(dian)(dian)(dian)導(dao)率(lv)(lv)探頭(tou)向溶(rong)(rong)液施加(jia)(jia)交(jiao)流(liu)電(dian)(dian)(dian)壓并測量(liang)(liang)其電(dian)(dian)(dian)阻(zu)以(yi)(yi)確定電(dian)(dian)(dian)導(dao)率(lv)(lv)。總和參數(shu) TDS(總溶(rong)(rong)解(jie)(jie)物質(zhi))與(yu)電(dian)(dian)(dian)導(dao)率(lv)(lv)密切(qie)相(xiang)關(guan)。鹽(yan)是重要的(de)(de)(de)溶(rong)(rong)質(zhi)。當溶(rong)(rong)解(jie)(jie)在水中時(shi),它們會釋放出增(zeng)加(jia)(jia)電(dian)(dian)(dian)導(dao)率(lv)(lv)的(de)(de)(de)離(li)子(zi)。因(yin)此(ci),通常可以(yi)(yi)以(yi)(yi)高可靠性(xing)從電(dian)(dian)(dian)導(dao)率(lv)(lv)確定 TDS。如果已知以(yi)(yi) μS/cm 為單位(wei)的(de)(de)(de)電(dian)(dian)(dian)導(dao)率(lv)(lv),則獲得以(yi)(yi) mg/l 為單位(wei)的(de)(de)(de) TDS 的(de)(de)(de)比率(lv)(lv)因(yin)子(zi)通常為 0.5-0.8。