KL-018 Industrial Online pH Controller KL-018 It is an accurate secondary instrument with LED digital display. it is applicable to determine pH value of water solution in departments of petroleum,chemical,medicine-produce ect. Automatic temp.Compensation Technical Specification: Model KL-018 Measuring range 0.00~14.00PH Accuracy ?.02PH Resolution 0.01PH Output current 4-20mA Automatic temperature compensation 0~100 Warning accuracy ?.02PH Environment Temperature:0~50 Humidity<95G Display 4-digital LED Input Impedance 1012 Power Supply 220V?0G 50Hz?G Dimensions 96?6?60(mm3) Weight 950g