Online pH meter

GWQ-pH6.0 pH/ORP Controller | GAIMC

Product Overview

The GWQ-pH/ORP Controller is an intelligent online chemical analysis instrument for continuous monitoring of pH and ORP values in industrial solutions. It features remote transmission monitoring and recording capabilities through output connections and RS485 interface.

With support for MODBUS-RTU protocol, it can be easily connected to computers for centralized monitoring and recording. The controller is widely used in thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food, and tap water industries.

Available in GWQ-pH2.2 (3.2 inch LCD) and GWQ-pH6.0 (2.8 inch LCD) models with high accuracy measurement and multiple electrode options.

Key Features

📊

High Accuracy

pH: ±0.02pH, ORP: ±1mV measurement accuracy for precise chemical analysis.

📱

Dual Models

GWQ-pH2.2 (3.2" LCD) and GWQ-pH6.0 (2.8" LCD) with Chinese/English interfaces.

🌡️

Wide Temp Range

Temperature measurement range: -10°C to +130°C with automatic compensation.

🔌

Multiple Outputs

Isolated 4-20mA output, RS485 communication, relay alarm contacts.

🔬

High Stability

pH: ≤0.02pH, ORP: ≤3mV stability over 24 hours of continuous operation.

⚡

Industrial Design

Panel-mounted design, 220VAC power supply, relay alarm outputs.

Technical Specifications

Parameters	Model
Parameters	GWQ-pH2.2	GWQ-pH6.0
Screen Size	3.2 inch LCD	2.8 inch LCD
Measuring Range	pH: 0~14pH ORP: ±1000mV (large range can be customized)	pH: 0~14pH ORP: ±2000mV
Accuracy	pH: ±0.02pH, ORP: ±1mV
Resolution	pH: 0.01pH, ORP: 1mV
Stability (24h)	pH: ≤0.02pH, ORP: ≤3mV
Input Resistance	≥10¹²Ω
Temperature Measurement Range	-10°C ~ +130°C
Temperature Measurement Accuracy	±0.5°C
Temperature Compensation	Manual/Auto (NTC10K)	Manual/Auto (NTC10K / Pt1000)
Current Output	Isolated, 4~20mA, maximum loop 750Ω, ±0.2%FS
Communication	RS485 (Optional)	RS485
Relay Alarm	High and low limit alarms each group (3A/250VAC), normally open contact relay
Power Supply	220VAC ±10% 50Hz
Dimensions (mm)	96×96×113	100×100×150
Opening Size (mm)	92×92	92.5×92.5

Type Selection

GWQ-	Code	Option	Note
Measurement Parameter	pH	pH Measurement	0~14pH
Measurement Parameter	ORP	ORP Measurement	±2000mV
Model	2.2	GWQ-pH2.2	Chinese interface, can be customized English
Model	6.0	GWQ-pH6.0	Chinese and English operation interface
Signal Communication	S1	4-20mA Output	Only pH2.2
Signal Communication	S2	4-20mA & RS485	Standard
Electrode Type	512	Composite Electrode	0~60°C
	513	PTFE Electrode	0~60°C
	541	High Temperature Electrode	0~90°C
	515	Custom High Temperature Electrode	0~130°C
	550	High Temperature Sterilization Electrode	0~130°C
	512A	Composite Pure Water Electrode	0~60°C
	510	High Temperature Pure Water Electrode	0~130°C
	Q	Special Custom Electrodes	Customized
Temperature Compensation	T0	No Compensation	Manual
Temperature Compensation	T1	Temperature Compensation	Auto
Lead Length	W0	Standard 5m	Default
Lead Length	W1	Custom Length	<50m

Ordering Example

GWQ-pH6.051512T0W0

GWQ-pH6.0 controller, 4-20mA output, Composite electrode, no temperature compensation, lead length 5m.

Core Applications

🏭

Thermal Power & Chemical

Continuous monitoring of pH/ORP in cooling water, boiler feedwater, and chemical processes.

🌿

Environmental Protection

Wastewater treatment monitoring, effluent quality control, and environmental compliance.

💊

Pharmaceutical & Biochemical

Precise pH control in fermentation, bioreactor, and pharmaceutical production processes.

🍶

Food & Beverage

Water quality monitoring in food processing, beverage production, and drinking water treatment.

FAQ

What is the measurement accuracy of GWQ-pH controllers?

Both GWQ-pH2.2 and GWQ-pH6.0 offer high accuracy of ±0.02pH for pH measurement and ±1mV for ORP measurement.

What are the differences between GWQ-pH2.2 and GWQ-pH6.0?

GWQ-pH2.2 has a 3.2" LCD screen with Chinese interface (English customizable), while GWQ-pH6.0 has a 2.8" LCD with Chinese/English interfaces and supports wider ORP range (±2000mV).

What temperature ranges do the electrodes support?

Electrodes range from standard (0~60°C) to high temperature (0~130°C) options, including specialized electrodes for pure water and sterilization applications.

What communication interfaces are available?

Both models support 4-20mA output, with GWQ-pH6.0 including RS485 standard. GWQ-pH2.2 offers RS485 as optional. Both support MODBUS-RTU protocol.

What industries are these controllers suitable for?

Widely used in thermal power, chemical fertilizer, metallurgy, environmental protection, pharmaceutical, biochemical, food, and tap water industries.

Intelligent pH/ORP Monitoring Solution

Customize the GWQ-pH controller for your specific application—contact us for model selection, electrode type, and communication interface configuration.

Get Custom Solution

Online Message

Have questions? Need a quote? We are ready to help! Fill out the form and a member of our sales team will contact you to discuss your requirements. You can also give us a call at (86)177-9158-1665.

GWQ-pH6.0

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HOT KEYWORDS

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GWQ-pH6.0

Online pH controller