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Contact Information
Consultation Hotline:
Address: No. 336, Heping Avenue, Wuchang District, Wuhan City
Message InquirypH Sensors
Technical Features:
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!
ASRS2-3811D Series
As shown in the figure:
● Digital ORP Sensor with RS485 output, which converts analog signals into digital signals
● Data is stored inside the Sensor, such as important parameters like zero point and slope
● No calibration required; plug and play
● Data can be transmitted over long distances, and measurement values are stable and reliable
● 3/4 NPT threaded connection for secure and reliable sealing
● VP connector or fixed wire connection; wire length can be customized to meet user requirements
● Outer tube material: plastic
● Size: ∅28×176 or other dimensions
Model Selection:
ASRS2-3811D with Fixed Cable (platinum ring)
ASRS2-3851D with VP Connector (platinum ring)
ASRS2-3711D with Fixed Cable (platinum plate)
ASRS2-3751D with VP Connector (platinum plate)
ASRS2-3611D with Fixed Cable (gold plate)
ASRS2-3651D with VP Connector (gold plate)
SDLS Series
As shown in the figure:
● The sensor is with fixed cable, the length can be adjusted according to user requirements
● Measurement unit: titanium steel
● Measurement range: 0–2000 μS/cm
● Temperature range: 0–80°C
● Dimensions: ∅12 x 120 mm
● Outer tube material: plastic
Model Selection:
Model | SDLS-1 | SDLST-1 | |
Measurement range (μS/cm) | 0-2000 | 0-2000 | |
Constant | 0.1 | 1 | |
Temperature compensation | None | optional | |
Temperature range (°C) | 0-80 | ||
Pressure resistance (MPa) | 1.0 | ||
External tube material | Plastic | ||
External dimensions (mm) | ∅12×120 | ||
Cable length | Adjust according to user requirements. | ||
SDLSS Series
As shown in the figure:
● The sensor is with fixed cable, the length can be adjusted according to user requirements
● Measurement unit: graphite
● Measurement range: 0–200,000 μS/cm
● Temperature range: 0–80°C
● Size: ∅ 12x120mm
● Outer tube material: plastic
Model Selection:
Model | SDLSS-1 | SDLSST-1 |
Measurement range (μS/cm) | 0-50000 | 0-50000 |
TDS range (mg/L) | 0-25000 | 0-25000 |
Salinity range (ppt) | 0-2.5 | 0-2.5 |
Temperature compensation | None | There is |
Temperature Range (°C) | 0-80 | |
Pressure resistance (MPa) | 1.0 | |
Constant | 1 | 1 |
External pipe material | Plastic | |
External dimensions (mm) | ∅ 12×120 | |
Cable length | Adjust according to user requirements. | |
SDL Series
As shown in the figure:
● The sensor is with fixed cable, the length can be adjusted according to user requirements
● Measuring unit: Platinum
● Measurement range: 0–20,000 μS/cm
● Temperature range: 0–100°C
● Dimensions: ∅12 x 120 mm
Model Selection:
General occasions
Model | SDL-0.1 | SDL-1 | SDL-10 |
Constant K | 0.1 | 1 | 10 |
Conductivity range (μS/cm) | 0-200 | 0-2000 | 0-20000 |
Temperature range (℃) | 0-100 | ||
Pressure resistance (MPa) | 1.0 | ||
External tube material | glass | ||
External dimensions (mm) | ∅12x120 | ||
Cable length | Customized according to user needs | ||
With temperature compensation; please specify the value of the temperature-compensation resistor when placing your order
Model | SDLT-0.1 | SDLT-1 | SDLT-10 |
Constant K | 0.1 | 1 | 10 |
Measurement range (μS/cm) | 0-200 | 0-2000 | 0-20000 |
Temperature range (℃) | 0-100 | ||
Pressure resistance (MPa) | 1.0 | ||
External tube material | glass | ||
External dimensions (mm) | ∅12x120 | ||
Temperature resistance | Options include 10K, PT100, PT1000, 2.252K, 22K, and more. | ||
Cable length | Customized according to user needs | ||
PH3300E Online pH/ORP Meter
As shown in the figure:
● Can be used with various pH and ORP sensors
● Supports tag number entry
● Provides two 4–20 mA current outputs, with optional RS485 output
● 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)
● Provides two 4–20 mA outputs for transmitting the primary measured parameter and the temperature measurement value
● The entire unit meets an IP67 protection rating, allowing for outdoor, open-air installation and operation
Technical Indicators:
| Main Functions | Measurement/Display/Transmission/Alarm/Automatic Cleaning |
| Screen parameters | 3.5-inch high-definition monochrome display (320×240) |
| Measurement range | pH: 0–14.00 pH; ORP: ±2000 mV |
| Resolution | 0.01 pH; 1 mV |
| Accuracy | ±0.01 pH; ±1 mV |
| Temperature range | 0–99.9°C |
| Temperature compensation thermistor | NTC10K/ NTC2.252K/ PT100/ PT1000 |
| Analog output | Channel 2: 4–20 mA (500 Ω load), accuracy: ±0.2% |
| Relay output | 3-way normally 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 |
| Weight | 0.8 kilograms |
PH3000E Online pH/ORP Meter
As shown in the figure:
● Can be used with various pH and ORP 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, preventing unauthorized modification of device parameters.
Technical Indicators:
Main Functions | Display/Transmission/Alarm/Communication |
Screen specifications | 2.8-inch high-definition monochrome display (320×240) |
Measurement range | pH: 0–14.00 pH ORP: ±2000 mV |
Resolution | 0.01 pH; 1 mV |
Temperature range | 0–99.9°C |
| Temperature compensation thermistor | NTC10K, NTC2.252K, PT100, PT1000 |
Operating Conditions | Ambient temperature: 0–60°C |
Input impedance | ≥1012 Ω |
Output | 4–20 mA (load < 750 Ω), RS485 optional |
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 | 113.5*118*136mm |
| Installation size | 92*92mm |
Installation method | Panel / Pipe / Wall Mounting |
International Sales Hotline:
Address: No. 336, Heping Avenue, Wuchang District, Wuhan City
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