... processing, printing, metallurgy, pharmacy, fermentation, chemical industry, water and other solution PH value of the online detection,swimming pool ... relay load 10A 220VAC11.Working conditions: environmental temperature is 0 ~ 60°C, relative humidity is 90% or less12.Input impedance: ... 92x92mm17.Weight: 0.9 Kg High accuracy online PH controller/PH probe/water treatment PH analyzer with signal output ...