Teledyne Valeport Launches Innovative Self-Calibrating pH Sensor

(Image credit: Teledyne Valeport)
The new Teledyne Valeport pH, developed in collaboration with ANB Sensors, introduces a cutting-edge, self-calibrating solution for robust, reliable pH measurements in ocean monitoring. This innovative sensor redefines how pH is measured over extended periods of time, offering a powerful alternative to traditional glass electrode technology.

Traditionally, pH measurements have used glass electrode technology. While highly accurate, this method requires frequent instrument calibration to prevent reference electrode drift, resulting in lengthy sensor downtime. Glass electrodes are also more fragile and require storage in very specific conditions.

Unlike conventional pH sensors, the new Teledyne Valeport pH leverages Teledyne Valeport’s respected engineering expertise and ANB’s patented calibration-free technology to create a leading pH sensor.

This advanced sensor is self-calibrating, preventing instrument downtime, reducing calibration-related costs, and significantly extending deployment periods. The sensor is also highly durable and easy to store, making it a resilient and superior alternative to traditional pH sensors.

Engineered for versatility, the sensor is rated to depths of up to 1250 meters and delivers exceptional accuracy of ±0.1 pH. Its rugged titanium housing ensures reliability in harsh marine environments, making it suitable for a wide range of applications, including: fixed site monitoring, buoys and frames, ROVs, AUVs and ASVs.

What sets the Teledyne Valeport pH sensor apart is its combination of simple operation, robustness, and ease of handling and storage. It is particularly well-suited for long-term deployment scenarios due to several unique features:

  • Robust solid-state technology – for durability in extreme marine conditions
  • Reference drift compensation – to maintain accuracy over time
  • Calibration-free operation – in situ self-calibration eliminates the need for frequent recalibrations
  • Bio foul solution – a low concentration of biocide is produced at the sensor head to keep the transducer clean and ensure reliable data collection
  • More responsive temperature compensation – improving measurement accuracy in varying ocean conditions


Designed with practicality in mind, the Teledyne Valeport pH sensor features Valeport’s signature titanium housing and measures 204 mm in length with a diameter of 47 mm. It operates on 9-28 V DC power with a consumption of <32 mA @12 V DC and weighs less than 1 kg in air.

The Teledyne Valeport pH will make its debut at Ocean Business 2025 (8-10 April, Southampton), where show visitors will have the opportunity to see it firsthand on Teledyne Marine’s stand T7.

The Teledyne Valeport pH sensor is available now for pre-order. For more information, visit www.valeport.co.uk or contact valeport-sales@teledyne.com.

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