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Dissolved oxygen controller

ph ec controller

1. Measure PH and ORP value
2. Intelligent menu operation
3. Automatic temperature compensation
4. Setting of upper and lower limit and alarm prompt
5. 4-20mA&RS485 output, you can connect it with different equipment

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Big news:

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GWQ series 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. 

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GWQ pH controller widely used in continuous monitoring of PH value or ORP value and temperature in solutions such as thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food and tap water .

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Detail Show

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Why choose us?

1. We have the pleasure of introducing ourselves to you as a professional factory in the export of water quality analyzer,  Our activities cover a wide range of commodities, such as ph meter, dissolved oxygen meters,  conductivity meter etc.

2. Our products are superior in quality and moderate in price and are sure to be saleable in your market. 

3. We have been engaged in the water quality measurements business with many countries for many years. And in a very good position to supply most grades of ph meter at competitive prices and for good delivery.


Screen size2.4 inch LCD(128*64)  
Measuring range





Accuracy pH:±0.02pH,ORP:±1mV  
Temperature range 0~100℃ -10~130℃
Temperature accuracy ±0.5℃  
Temperature compensationManual / Auto (NTC10K)

Manual / Auto

(NTC10K / Pt1000)

Relay alarmHigh and low limit alarms each group (3A/250VAC),

Normally open contact relay

CommunicationRS485 (compatible with MODBUS RTU)
Dimensions (mm)96*96*110100*100*150
Opening size(mm) 92*92 92.5*92.5
shell protection/

Antistatic coating