The industrial online membrane residual chlorine meter is a water quality online monitoring and control instrument with a microprocessor. This instrument is widely used in various industries such as drinking water treatment plants, drinking water distribution networks, swimming pools, water quality treatment engineering, sewage treatment, water disinfection (with chlorine dioxide generators), etc. It continuously monitors and controls the residual chlorine value, pH value, and temperature value in aqueous solutions.

Instrument features

● LCD large screen color LCD display

● Intelligent menu operation

● Data recording&curve display

● Multiple automatic calibration functions

● Three sets of relay control switches

● High limit, low limit, hysteresis control

4-20mA&RS485 with multiple output modes

● Display residual chlorine value on the same interface pH、 Current value, etc

● Password protection can be set to prevent accidental operation by non staff members

Technical Parameter

(1) Measurement range:

Residual chlorine: 0-20.00mg/L;

pH：0～14.00pH；

Temperature:- 10～150.0℃；

(2) Resolution:

Residual chlorine: 0.001mg/L;

pH：0.01pH；

Temperature: 0.1 ℃;

(3) Basic error:

Residual chlorine: ± 1% F.S;

pH：±0.05pH；

Temperature: ± 0.3 ℃;

(4) Response time: 90% less than 90 seconds;

(5) 2-channel current output:

0/4-20mA (load resistance<750 Ω);

20-4mA (load resistance<750 Ω);

(6) Communication output: RS485 MODBUS RTU；

(7) Three sets of relay control contacts:

5A 250VAC，5A 30VDC；

(8) Power supply:

85-265VAC ± 10%, 50 ± 1Hz, power ≤ 3W;

9-36VDC, power: ≤ 3W；

(9) Dimensions: 215 * 125 * 80mm;

(10) Installation method: wall mounted;

(11) Protection level: IP65；

(12) Instrument weight: 1.5kg;

(13) Work environment:

Environmental temperature:- 10～60℃；

Relative humidity: not exceeding 90%;

There is no strong magnetic field interference around except for the Earth's magnetic field.