Product name : Online Acid Alkali Concentration Meter
Product No. : SJG-3083
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SJG-3083 Industrial Acid Alkali Concentration Meter is our company’s latest micro-computer based high-end instrument. All the information in the instrument is displayed in English. It is characterized by complete English display, English menu operation, intelligence, multiple functions, high measuring performance, and strong environment adaptability. It can be widely used in thermal power plants, chemical industry and other industries. It can be used to test the concentration of the regenerated liquid in high-purity water preparation process by means of ion exchange. It can also be used for continuously monitoring the concentration of the Acid and Alkali in the pickling solutions for clean boilers and pipelines.


Intelligent: SJG-3083 English 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

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


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


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

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


Communication interface: RS485, 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 alkali


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

their accuracy.

Technical Parameters

1. Measuring range: concentration: (0.0010.00)HCL; (0.0010.00)NaOH, (0.0030.00)H2SO4; (0.0010.00)NaCL (bigger range customized),  (0.0015.00)HNO3; temperature: 099.9(Option)

2. Intrinsic error of the electronic unit: concentration: ±1.0, temperature: ±0.3℃

3. Automatic temperature compensation range:: 0




4. Solution tested: 099.9℃, 0.6MPa

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



6. Repeatability error of the electronic units: ±1.0

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

8. Isolated current output: 420 mA(load <750Ω)

9. Output current error: ≤±1FS

10. Compensation range of the temperature coefficient: (010.0)/℃(adjustable)

11. Alarm relay: AC220V, 3A

12. RS485 Communication Interface

13. Power supply: AC220V±22V, 50Hz±1Hz,24V DCoption

14. Protection grade: lP54, Aluminium shell, applicable 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. Weight: 1.5kg

20. Working conditions: ambient temperature: 0-60℃; relative humidity <85

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Online service

Skype: jackie.chan-chemins 294772396 info@starkinstrument.com