The digital residual chlorine sensor is an instrument used to measure the concentration of residual gas in water samples.Residual chlorine refers to the remaining chlorine in the water, including free chlorine and combined chlorine. it is the chlorine used to kill bacteria and other microorganisms during the disinfection process. Usually based on electrochemical or optical principles. Electrochemical sensors determine residual gas concentration by measuring the current produced by the reaction between gas and electrodes. Optical sensors determine chlorine concentration by measuring its absorption or scattering of light of specific wavelengths.

1.Measurement principle: three-electrode system constant voltage method;

2.Measuring range: 0~20mg/L;

3.Accuracy:±2%FS;

4.Resolution: 0.01mg/L;

5.Repeat rate:<0.1mg/L;

6. Drift: <0.1mg/L;

7.Temperature compensator error: <0.1mg/L;

8. Response time: <15s;

9.Working temperature: 0-50°c;

10.Sensor size (DXL):ф34X225;

11. Shell material: POM;

12.Protection level: lP68, 6bar;