Keller CTD Sensor

Keller PR-36 XiW CTD Sensor for groundwater monitoring. A Swiss made, latest-generation, multi-parameter sensor, another sensor from Europe’s leading manufacturer of pressure transducers. Available in Stainless Steel or Titanium, the Keller CTD is corrosion proof so delivers extreme accuracy in saline environments. Most importantly the sensor is suitable for level, temperature and conductivity measurements. The sensor is compatible with Van Walt’s telemetry. 30 m of Kevlar Cable is provided with every sensor. Through the sensor’s Modbus interface you can connect a network of sensors. Consequently, you get ultra-high stability for your long-term monitoring with the Keller PR-36 XiW CTD Sensor.

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  • Compatible with Van Walt telemetry (vanwaltCONNECT; vanwaltDataHub & vanwaltDataSlave)
  • Supplied with 30 m of vented Kevlar Cable so no barometric compensation required
  • Available in Stainless Steel or Titanium
  • Available from stock with Modbus connection
  • High accuracy with resolution of 5 ppm
  • Mathematical compensation of nonlinearities and temperature dependencies
  • Corrosion proof housing
  • Level measuring ranges from 0…3 m to 0…300 m
  • Ultra-high long-term stability, particularly for monitoring saline environments
  • Devices can be connected together into a network system
  • Un-rivalled quality and performance that is synonymous with Swiss engineering.

Keller CTD Sensor Equipment Options:


  • Saltwater intrusion monitoring
  • Water quality monitoring for agriculture, remediation and correlation of conductivity with salt, TDS, permanganate, nitrate & sulphate
  • Tidal fluctuations monitoring
  • Estuary and wetlands monitoring
  • Leachate monitoring at landfill sites
  • Aquifer storage and recovery
  • Network automation monitoring
  • Waste Water applications
  • Environmental monitoring
  • Surface water discharge measurement
  • Aquifer storage & recovery



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