TempHion pH logger

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TempHion™ Water Quality Sensor & Datalogger

The TempHion™ is a submersible water quality sensor and datalogger designed for reliable long-term monitoring of pH, ORP, and temperature, or alternatively bromide and temperature for tracer studies. Built for continuous or intermittent deployment, the TempHion combines robust construction, low power consumption, and integrated datalogging to support accurate unattended in-situ monitoring.

Featuring a patented reference electrode for enhanced long-term stability, the TempHion minimises calibration frequency and maintenance, making it ideal for remote and long-term water quality applications.

Accurate Long-Term Monitoring

The TempHion provides dependable measurements in challenging field conditions, with excellent resistance to signal interference thanks to its integrated solution ground for superior noise protection.

Available measurement options include:

  • pH

  • ORP (Oxidation-Reduction Potential)

  • Temperature

  • Bromide (alternative configuration)

Its stable sensor design makes it particularly suitable for long-duration deployments where frequent servicing is impractical.

Integrated Datalogging & Smart Software

With onboard non-volatile memory storing over 200,000 records, the TempHion supports autonomous monitoring and efficient data collection.

It includes Aqua4Plus software from Seametrics, providing advanced control for:

  • Real-time monitoring

  • Flexible programming

  • In-field calibration

  • Data visualisation

  • Easy export to spreadsheets and databases

Rugged & Field Ready

Designed for harsh water monitoring environments, the TempHion features durable construction using 316 stainless steel, fluoropolymer, acetal, and PTFE materials for long-term reliability.

Key design features include:

  • Narrow 0.75” diameter for easy well and pipe deployment

  • 17.625” sensor length

  • Low-power operation for extended deployments

  • Long-term sensor stability

  • Available cableless or with polyethylene, polyurethane, or FEP cable options

Connectivity & Integration

The TempHion operates on an RS485 network and supports both Modbus® and SDI-12 communication protocols, allowing easy integration into telemetry systems and existing monitoring networks.

Typical Applications

The TempHion is ideal for a range of environmental and industrial monitoring applications, including:

  • Single- and multi-well tracer tests

  • Saltwater intrusion tracking

  • Tidal influence studies

  • Wastewater discharge monitoring

  • Long-term pH monitoring

Combining stable measurement technology, durable construction, and high-capacity datalogging, the TempHion is a reliable solution for unattended water quality monitoring in challenging environments.

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