The industrial online acid/alkali/salt concentration online monitoring and control instrument is a water quality online monitoring and control instrument with a microprocessor. This instrument is widely used in industries such as thermal power, chemical, and steel pickling, such as the regeneration of ion exchange resins in power plants, chemical industrial processes, etc. It continuously detects and controls the concentration of chemical acids or bases in aqueous solutions.

Instrument features

● LCD large screen color LCD display

● Intelligent menu operation

● Data recording&curve display

● Manual or automatic temperature compensation

● Three sets of relay control switches

● High limit, low limit, hysteresis control

4-20mA&RS485 with multiple output modes

Display measurement values, temperature, current values, etc. on the same interface

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

Technical Parameter

(1) Measurement range:

NAOH：0～16%； CaCL2：0～22%；

NACL：0～10%； HNO3：0～10%；

HCL：0～10%； H2SO4：0～10%；

Temperature: 0-80.0 ℃;

(2) Resolution:

Concentration: 0.01%;

Temperature: 0.1 ℃;

(3) Basic error:

Concentration: ± 0.25%;

Temperature: ± 0.3 ℃;

(4) Stability: ± 0.25%/24h;

(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: 144 × 144 × 118mm;

(10) Installation methods: panel type, wall mounted type, pipeline type;

Panel opening size: 138 × 138mm;

(11) Protection level: IP65；

(12) Weight: 0.8kg;

(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.