All pH Sensors manufactured by our company are developed using German technology and produced in strict accordance with German manufacturing processes. To ensure product quality, all key raw materials are directly imported from overseas. Currently, most of our products are exported to more than ten countries, including the United States, Germany, France, the United Kingdom, Australia, Russia, and South Korea. Years of practical experience have proven that our pH Sensors boast superior performance and stable, reliable quality. Our comprehensive range of pH Sensors can be widely applied in various industrial production control processes!

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PH3200 Online pH/ORP Meter

As shown in the figure:

● Can be used with various pH and ORP sensors

● Fully intelligent, featuring high-precision AD conversion and microcontroller-based processing technology, with powerful functionality.

● High reliability: components are integrated onto a single circuit board, eliminating the need for complex function switches and potentiometers.

● Strong anti-interference capability and excellent electromagnetic compatibility.

● Automatic range switching within the measurement range covered by the electrode

● 4–20 mA current output, or RS485 output

● Standard IP65 waterproof body design

● Can be installed on dials, pipelines, and walls.

Technical Indicators:

Measurement range	pH: 0–14.00 pH, 0.01 pH ORP: ±2000, 0.1 mV Temperature: 0–99.9°C, 0.1°C
Automatic temperature compensation range	0–99°C, with 25°C as the reference.
Repeatability error of the electronic unit	±0.02 pH
Input impedance	≥10¹² Ω
Current-isolated output	0–10 mA (load < 1.5 kΩ), 4–20 mA (load < 750 Ω)
Output current error	≤±1%FS
High and low alarm relays	AC 220V, 3A
Power supply	AC 220 V ± 22 V, 50 ± 1 Hz or 24 V DC
Communication interface	RS485
Protection rating	IP65
External dimensions	146 (L) x 146 (W) x 108 (D) mm
Installation size	138 mm × 138 mm
Weight	0.8 kilograms

CON3300E Online Conductivity Meter

As shown in the figure:

● Can be used with various conductivity sensors

● Supports tag number entry

● Provides two 4–20 mA current outputs for transmitting the primary measured parameter and the temperature measurement value

● Provides three relay outputs (upper and lower limit alarms, and automatic cleaning)

● Automatic temperature compensation

● Provides password-based access control to prevent unauthorized modification of parameter settings

● Supports Chinese/English menu display (default is Chinese at factory settings)

● RS485 communication interface

● The entire unit meets an IP67 protection rating, making it suitable for outdoor, open-air installation and operation

Technical Indicators:

Main Functions	Measurement / Display / Transmission / Alarm / Automatic Cleaning
Screen Specifications	3.5-inch high-definition monochrome screen (320×240)
Measurement range	0–400 mS/cm
Constant value	0.01, 0.1, 1, 10
Accuracy	±5%FS; ±0.3℃
Temperature range	0–99.9°C
Temperature compensation thermistor	NTC10K/ NTC2.252K/ PT100/ PT1000
Analog output	2-wire (4–20) mA (500 Ω load), accuracy: ±0.2%
Relay output	Three-channel open/normally closed contact output, 250 Vac / 30 Vdc / 3 A (max)
Input impedance	≥1012 Ω
Alarm settings	Upper/Lower Limit Alarm (with configurable lookback and delay)
Power supply	Compatible with 220VAC and 24VDC
Communication interface	RS485
Protection rating	IP67
Relative humidity	<85%
External dimensions	144×152×113mm
Installation size	136×136 mm
Installation method	Panel / Pipe / Wall Mounting

CON3000E Online Conductivity Meter

As shown in the figure:

● Can be used with various analog conductivity Sensors

● Supports one thermoresistance input for automatic temperature compensation in conductivity measurements.

● Supports tag entry and temperature correction functions.

● Can be equipped with various types of conductivity, TDS, and salinity Sensors

● Provides a 4–20 mA output channel for transmitting the primary measured parameter or temperature measurement; RS485 output is also available as an option.

● Provides two relay outputs (upper/lower limit alarms)

● Provides password management permissions for operations to prevent unauthorized modification of parameter settings.

● Automatic temperature compensation

● Default factory setting is Chinese; supports both Chinese and English menu display.

● The entire unit features an IP67 protection rating, enabling outdoor, open-air installation and operation.

Technical Indicators:

Main Functions	Display/Transmit/Alarm/Communication
Screen Specifications	2.8-inch high-definition monochrome screen (320×240)
Measurement range	0–400 mS/cm
Resolution	0.01, 0.1, 1, 10
Accuracy	±5%FS; ±0.3℃
Temperature compensation thermistor	NTC10K, NTC2.252K, PT100, PT1000
Temperature range	0–99.9°C
Operating Conditions	Ambient temperature: 0–60°C
Input impedance	≥10¹² Ω
Output	4–20 mA (load < 750 Ω)
Communication interface	RS485
Power supply	Compatible with AC 220 VAC and DC 24 V
Communication interface	RS485
Protection rating	IP67
Relative humidity	<85%
External dimensions	113.5118136mm
Installation size	92*92mm
Installation Method	Panel / Pipe / Wall Mounting

CON3200 Online Conductivity Meter

As shown in the figure:

● Fully intelligent, featuring high-precision AD conversion and microcontroller-based processing technology for powerful functionality

● High reliability: components are integrated onto a single circuit board, eliminating the need for complex function switches and potentiometers.

● Strong anti-interference capability and excellent electromagnetic compatibility

● Automatic range switching within the measurement range covered by the Sensor

● Phase-sensitive detection: Eliminates the influence of lead wires on concentration measurement

● 4–20 mA current output, or RS485 output

● Standard IP65 waterproof body design

● Can be installed on dials, pipelines, and walls

Technical Indicators:

Measurement range	0-400ms/cm
Constant value	0.01, 0.1, 1, 10
Accuracy	±5%FS; ±0.3℃
Automatic temperature compensation	0–99.9°C, with 25°C as the reference temperature
Basic error of the instrument	Conductivity ±1% FS, Temperature ±0.5°C
Current-isolated output	0–10 mA (load < 1.5 kΩ), 4–20 mA (load < 750 Ω)
Output current error	≤±1%FS
High and low alarm relays	AC 220V, 3A
Power supply	AC 220 V ± 22 V, 50 ± 1 Hz or 24 V DC
Communication interface	RS485 (optional)
Protection rating	IP65
External dimensions	146 (L) x 146 (W) x 108 (D) mm
Installation size	138 mm × 138 mm
Installation method	Panel / Wall Mounting

DOT3000 Online Dissolved Oxygen Meter

As shown in the figure:

● Can be used with various types of dissolved oxygen sensors

● Supports tag number entry

● Provides a 4–20 mA current output channel for transmitting the primary measured parameter or temperature measurement; RS485 output is also available as an option.

● Provides two relay outputs (upper/lower limit alarms), supporting both normally open and normally closed wiring configurations.

● Automatic temperature compensation

● Default factory setting is Chinese; supports both Chinese and English menu display.

● The entire unit features an IP67 protection rating, enabling outdoor, open-air installation and operation.

● Provides password management permissions for operational access to prevent unauthorized modification of device parameters.

Technical Indicators:

Main functions	Display/Transmission/Alarm/Communication
Screen specification	2.8-inch high-definition monochrome screen (320×240)
Measurement range	0–20 mg/L
Temperature range	0–99.9°C
Automatic temperature compensation	Yes
Output	4–20 mA (load < 750 Ω)
Alarm settings	Upper/Lower Limit Alarm (with configurable lookback and delay)
Power supply	AC 220V or 24V DC
Communication interface	RS485
Protection rating	IP67
Relative humidity	<85%
External dimensions	113.5118136mm
Installation size	92*92mm
Installation method	Panel / Wall Mounting

DOT3200 Online Dissolved Oxygen Meter

As shown in the figure:

● Fully intelligent, featuring high-precision AD conversion and microcontroller-based processing technology for powerful functionality

● High reliability: components are integrated onto a single circuit board, eliminating the need for complex function switches and potentiometers

● Strong anti-interference capability and excellent electromagnetic compatibility

● Automatic range switching within the measurement range covered by the Sensor

● Phase-sensitive detection: Eliminates the influence of lead wires on concentration measurement

● 4–20 mA current output, or RS485 output

● Standard IP65 waterproof body design

● Can be installed on dials, pipelines, and walls

Technical Indicators:

Measurement range	0–20.00 mg/L (automatic switching)
Resolution	0.1 µg/L: 0.01 mg/L; 0 1℃
Basic error of the entire instrument	µg/L: ±1.0% FS; mg/L: ±0.5% FS; Temperature: ±0.5°C
Repeatability of the instrument reading	±0.5%FS
Stability of the overall instrument reading	±1.0%FS
Response time	<60 seconds (98% of the final value, 25°C); 37°C: 98% of the final value in <20 seconds
Output current error	≤+1.0%FS
Isolated output	0–10 mA (load < 1.5 kΩ), 4–20 mA (load < 750Ω)
Communication interface	RS485 optional
Alarm relay	AC 220V, 3A
Power supply	220 VAC or 24 VDC
External dimensions	146 (L) x 146 (W) x 108 (D) mm
Installation size	138x138mm
Working Conditions	Ambient temperature: 0–60°C, relative humidity <85%
Installation Method	Panel / Wall Mounting

CONA3200

As shown in the figure:

● Fully intelligent, featuring high-precision AD conversion and microcontroller-based processing technology, with powerful functionality

● High reliability: components are integrated onto a single circuit board, eliminating the need for complex function switches and potentiometers

● Strong anti-interference capability and excellent electromagnetic compatibility

● Automatic range switching within the measurement range covered by the Sensor

● Phase-sensitive detection: Eliminates the influence of lead wires on concentration measurement

● 4–20 mA current output, or RS485 output

● Standard IP65 waterproof body design

● Can be installed on pipelines, walls, and dial faces

Technical Indicators:

Measurement range	Concentration: (0–15)% HCl Concentration: (0–10)% NaOH
Basic error of the electronic unit	Concentration: ±1%, Temperature: ±0.3℃
Temperature	0–99.9°C, ±0.3°C
Accuracy	Accuracy: ±2.0%; after routine point calibration, the error can be less than 0.05%.
Automatic temperature compensation range	0–99.9°C
Test water sample	0–99.9°C, 0.6 MPa
Current-isolated output	4–20 mA (load < 750 Ω)
Output current error	≤±1%FS
High and low alarm relays	AC 220V, 3A
Power supply	220 VAC or 24 VDC
Communication interface	RS485 (optional)
Protection rating	IP65
External dimensions	146 (L) x 146 (W) x 108 (D) mm
Installation size	138 mm × 138 mm
Installation Method	Panel-mounted/Wall-mounted