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Online PH Meter

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  • Good anti-interference performance
  • Manual/automatic temperature compensation
  • User settings: Language, buzzer, LCD backlight, password, output signal 4-20mA and RS485, etc.
  • Internal industrial watchdog insures pH meter don't crash.
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Online PH Controller Introduction

Online PH Controller is one of the intelligent online chemical analysis instruments. It can continuously monitor the data and realize remote transmission monitoring and recording through the transmission output connection recorder. It can also be connected to the RS485 interface . It can be easily connected to the computer through the MODBUS-RTU protocol. Monitoring and recording.

Online PH Controller Feature

  • 4.3 inch LCD display

  • Good anti-interference performance

  • Manual/automatic temperature compensation

  • User settings: Buzzer, LCD backlight, password, pH/ORP electrode, manual/automatic temperature compensation, pH/ORP calibration, pH/ORP modification, pH/ORP high/low alarm, output signal 4-20mA and RS485, etc.

  • Data record function

  • Automatic cleaning function


Online PH Controller Specification

Measuring rangepH: 0~14pH, ORP: -1000~1000mV (-2000~2000mV need customization)
Accuracy±0.02pH, ±1mV
Resolution±0.01pH, ±1mV
Stability≤0.02pH/24h, ≤3mV/24h
Input impedance≥10^12Ω
Temperature range-10~+130℃ (NTC 10K or PT1000, accuracy: ±0.5℃)
Temperature compensation-10~+130℃ manual/automatic
Output signal *Isolated 4-20mA signal (error: ±0.1%, under maximum loop resistance 750Ω)
Communication function *RS485 with standard MODBUS-RTU (Now RS485 software is free.)
Power supplyAC 220V±10%, 50Hz/60Hz
Alarm relay2 alarm relays: AC 250V/3A
Function: high alarm, low alarm

Definition of the ports:

  1. INPUT: Measuring terminal of the pH/ORP/Antimony electrode

  2. NC: Undefined

  3. REF: Reference terminal of the pH/ORP/Antimony electrode

  4. NC: Undefined

  5. TEMPA: Temperature compensation terminal A

  6. TEMPB: Temperature compensation terminal B

  7. TEMPC: Temperature compensation terminal C

  8. RS485 (A+): RS485 communication interface A+

  9. RS485 (B-): RS485 communication interface B-

  10. 0/4-20mA (A+): A current output terminal +

  11. 0/4-20mA (A/B-): A/B current output terminal -

  12. 0/4-20mA (B+): B current output terminal +

  13. WASH: Cleaning device relay

  14. WASH: Cleaning device relay

  15. REL B: Alarm relay B

  16. REL B: Alarm relay B

  17. REL A: Alarm relay A

  18. REL A: Alarm relay A

  19. POWER N: AC 220V/110V neutral wire

  20. POWER L: AC 220V/110V live wire


-Manuals

Online PH Controller

-Data sheet


Online PH Controller Application

Online PH meter application-1

Online PH meter application


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