Online PH ORP Controller with sensor PH/ORP-6850

Short Description:

Product Detail

Product Tags

◇ Online single channel PH or ORP controller.
◇ Three-point calibration function, automatic identification of calibration liquid and the error calibration.
◇ Programmable manual /Auto temperature compensation, the adaptation of various types of PH/ORP electrode.
◇ High/Low limit relay control output signal.
◇ Isolation reversible Migration 4-20mA current output signal.
◇ Modbus RS485 RTU communication output signal.
◇ ABS Enclosure protection grade:NEMA4X/IP65.
◇ AC input be fused and self-recovery function.
◇ ESD over voltage protection is available.

Main Technique Specifications



PH/ORP-6850 – Single channel PH/ORP Controller


PH: 0.00~14.00 pH , 

ORP: -1200~+1200 mV


pH: ±0.1 pH,ORP: ±2mV

Temp. Comp.

0–100 ℃, manual / automatic

 ( PT1000, PT100, NTC 10k, RTD )

Operation Temp.

0~60℃ (Match Normal temp sensor)

 0~100℃(Match high temp sensor)


Two/ Three Composite PH sensor, ORP sensor


4.00; 6.86;9.18 Three Point Calibration


128 * 64 dot matrix LCD

Current output signal

Isolation, Reversible Transferable 4-20mA signal output,

max circle resistance 750Ω

Control output signal

High and low limit alarm contact each group(3A/250 V AC)

normal open contact relay 

Communication signal

Modbus RS485, baud rate: 2400, 4800, 9600

Power supply

AC220V±10%, 50/60Hz (standard), AC110V, DC24V, 12VDC (optional)

Protection Grade


Working environment

Ambient Temp. 0~70℃; Relative Humidity ≤95%

Overall dimensions

96×96×130mm (H X W X D)

Hole dimensions

92×92mm (H X W)

Widely used for chemical, pharmaceutical, printing and dyeing, metallurgy, electroplating, environmental protection, water treatment, aquaculture and other process detection and control of PH/ ORP value.

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