Na'urar auna turbidity/Turbidity firikwensin
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Mita Tsaftacewa Mai Ɗaukewa ta SC300TURB don Kula da Ruwa
Na'urar firikwensin turbidity ta rungumi ka'idar hasken da aka watsa digiri 90. Hasken infrared da mai watsawa ke aikawa akan firikwensin yana sha, yana nunawa kuma yana warwatsewa ta hanyar abin da aka auna yayin aikin watsawa, kuma ƙaramin ɓangare na hasken ne kawai zai iya haskaka na'urar ganowa. Yawan najasar da aka auna yana da alaƙa, don haka ana iya ƙididdige yawan najasar ta hanyar auna yadda hasken da aka watsa yake watsawa.