Water Quality Sensor with Datalogging
  • Measures pH, ORP, and temperature
  • Or measures Bromide and temperature
  • RS485 network
  • Integrated datalogger collects 200,000+ records
  • Includes new Aqua4Plus software
  • Dual protocol (Modbus® and SDI-12)

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The TempHion™ is a submersible water quality sensor and datalogger that includes a ph/ORP or Bromide element as well as one thermistor-based temperature element.

With a patented reference electrode, the TempHion provides long-term stability for continuous or intermittent monitoring—making unattended in-situ pH testing and Bromide tracer studies possible without frequent calibrations or service.


  • Easy-to-use in-field calibration utilities
  • 316 stainless steel, fluoropolymer, acetal, and PTFE construction
  • Solution ground for excellent noise protection
  • Operates on low power
  • Long-term sensor stability
  • Measures pH, ORP, and temperature
  • RS485 network
  • 200,000+ records stored in non-volatile memory
  • Dual protocol (Modbus® and SDI-12)
  • Narrow 0.75″ diameter, 17.625″ length
  • Available cableless or with a variety of cable options—polyethylene, polyurethane, or FEP
  • Easy export to spreadsheets and databases


  • Precise single- or multi-well tracer tests
  • Saltwater intrusion tracking
  • Tidal influence studies
  • Wastewater treatment discharge
  • pH monitoring