... power, breeding, food processing, printing, metallurgy, pharmacy, fermentation, chemical industry, water and other solution PH value of the online detection,swimming ... °C2.Resolution: 0.01 PH, 1 mv, 0.1°C3.Level: +/- 0.02 PH, ±1 mv, +/-0.3°C4.Stability: ≤0 ... size: 92x92mm17.Weight: 0.9 Kg High accuracy online PH controller/PH probe/water treatment PH analyzer with signal output 4-20mA