Intelligent: SJG-3083 On-line Acid alkali Concentration Meter adopts high-precision AD conversion and

single chip microcomputer processing technologies. It can be used for the measurement of the HCL,NaOH etc

concentration and temperature, automatic temperature compensation, automatic range switching and

self-checking.

Reliability: All the components are arranged on one circuit board. No complicated functional switch, adjusting

knob or potentiometer is arranged on this instrument.

Strong interference immunity: Its current output adopts optoelectronic isolating technology. This meter has

strong interference immunity and the capacity of long-distance transmission as well as excellent electromagnetic

compatibility.

Waterproof and dust-proof design: Its protection grade is IP54. Aluminium shell is applicable for outdoor use.

Automatic range switching: The measuring ranges can automatically switch within the measuring range of the

electrode.

RS485 Communication interface: It can be easily connected to a computer to perform monitoring and communication.

Phase sensitive detection: Eliminating the influence of conductors on the measurement of hydrochloric acid

concentration.

Automatic measuring frequency switching: This can help prevent electrodes from polarization, so as to enhance

their accuracy.

1. Measuring range: concentration: (0.00~10.00)% HCL; (0.00~10.00)% NaOH, (0.00~30.00)%H2SO4; (0.00~10.00)%NaCL(Customized for high concentration); (0.00~10.00)% HNO3; (Option) temperature: 0~99.9°C

2. Intrinsic error of electronic units: concentration: ±1.0%; temperature: ±0.3°C

3. Range of automatic temperature compensation: 0~99.9°C

4. Solution tested: 0~99.9°C, 0.6MPa

5. Intrinsic error of the instrument: concentration: ±2.0% (the error may be less than 0.05% after usual point

calibration.)

Temperature: ±0.5°C (0.0°C≤T≤80.0°C)

6. Repeatability error of the electronic unit: ±1.0%

7. Stability of the electronic unit: ±1.0%/24h

8. Isolated current output: 4~20 mA(load <750Ω)

9. Output current error: ≤±1%FS

10. Compensation range of the temperature coefficient: (0-10.0)% /°C (adjustable)

11. Alarm relay: AC 220V, 3A

12. Communication interface: RS485

13. Power supply: AC220V±22V, 50Hz±1HZ, 24VDC(option)

14. Protection grade: IP54, Aluminium shell for outdoor use.

15. Clock accuracy: ±1 minute/month

16. Data storage capacity: l month (1 point/5 minutes)

17. Saving time of data under a continuous power-failure condition: 10 years

18. Overall dimension: 146 (length) x 146 (width) x 150 (depth) mm; dimension of the hole: 138 x 138mm

19. Working conditions: ambient temperature: 0-60°C; relative humidity <85%

20. Weight: 1.5kg