Find the right ph sensor for your process

pH sensors & expert
application support

At SampleScience, we offer a comprehensive range of industrial pH and ORP sensors suitable for water treatment, wastewater, aquaculture, food and beverage, mining, chemical processing, and other industrial applications.

Our GDH sensors are designed to perform reliably in harsh environments, high temperatures, and challenging process conditions.

Selecting the correct sensor is critical for achieving accurate measurements, reliable operation, and maximum sensor life. Our experienced team works closely with customers to recommend the most suitable solution for their application, helping reduce maintenance requirements and improve process performance.

In addition to sensor supply, we provide installation, commissioning, calibration, maintenance services, and a range of pH controllers to deliver complete pH measurement and control solutions.

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GDH-PHSA-701
Chemical processes including high suspended solids solutions
GHD-PHSD-801
Digital pH probe eliminates signal drift and noise
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GDH-PHSA-513A
PTFE sensor for strong acid and alkali resistance
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GDH-PHSD-801

Smart, Reliable Digital pH Measurement

The GDH-PHSD-801 Digital pH Sensor combines accurate pH measurement with integrated Modbus RS485 digital communication, delivering a modern alternative to traditional analogue pH probes. With signal conversion occurring within the sensor itself, digital technology helps eliminate electrical noise, signal degradation, and interference issues often encountered with analogue installations, particularly over longer cable runs.

In addition to the benefits of digital communication, the GDH-PHSD-801 features fast response times, excellent stability, strong resistance to fouling and blockage, and no electrolyte replenishment requirements, reducing maintenance and improving long-term reliability. Its reinforced reference system is designed to perform consistently in demanding water quality applications.

Key benefits include:
•  Stable, interference-resistant digital measurements
•  Improved accuracy and repeatability compared with traditional analogue systems
•  Reliable long-distance signal transmission via RS485 Modbus-RTU
•  Simplified integration with PLC, SCADA, IoT, and control systems
•  Reduced maintenance requirements and lower lifecycle costs
•  Fast response and long service life
•  No electrolyte replenishment required
•  Excellent resistance to fouling and harsh operating conditions

To complete the solution, SampleScience also supplies compatible pH controllers, displays, and monitoring systems, providing a fully integrated pH measurement and control package tailored to your application.

Contact our team to discuss the GDH-PHSD-801 and the right pH control solution for your process.

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Frequently Asked Questions

Everything you need to know about selecting the right sensor to suit your process.
What pH sensor is best for my application?
The best pH sensor depends on your process conditions, including temperature, pressure, chemical compatibility, mounting requirements, and the presence of solids or contaminants. SampleScience offers a wide range of industrial pH sensors and can help you select the most suitable solution for reliable performance and long sensor life.
Do you offer installation and maintenance services?
Yes. Our team can assist with installation, commissioning, calibration, troubleshooting, and ongoing maintenance to help ensure your pH measurement system continues to operate accurately and reliably throughout its service life.
How often should a pH sensor be calibrated?
Calibration frequency depends on the application and required accuracy. While many systems are calibrated monthly or quarterly, harsh process conditions may require more frequent calibration. Our team can recommend an appropriate maintenance and calibration schedule for your application.
Do you supply pH controllers and complete monitoring systems?
Yes. SampleScience supplies a range of pH controllers, displays, transmitters, and complete monitoring solutions. We can provide everything from a standalone pH measurement system through to a fully integrated monitoring and control solution.