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ND-PHEHT pH, ORP & Temperature Sensor
What is the ND-PHEHT? The ND-PHEHT is an industrial pH, ORP and temperature combination probe for continuous water quality monitoring. Built for permanent installation in sewage treatment plants, industrial effluent streams, surface water and drinking water supply, the rugged glass electrode delivers reliable measurements over a wide pH and ORP range when paired with the yDoc ML-525 datalogger.
The ND-PHEHT is an industrial pH, ORP and temperature combination probe for continuous water quality monitoring. Built for permanent installation in sewage treatment plants, industrial effluent streams, surface water and drinking water supply, the rugged glass electrode delivers reliable measurements over a wide pH and ORP range when paired with the yDoc ML-525 datalogger.
Key parameters
What the ND-PHEHT measures
pH
0–14 pH units — full industrial range
ORP / redox
−1000 to +1000 mV measurement range
Temperature
–10 to +50 °C, with auto-compensation
Direct integration
7 m cable to the yDoc ML-525 over SDI-12
Specifications
Technical specifications
Applications
Where the ND-PHEHT is used
Sewage treatment plants
Continuous pH and ORP monitoring in municipal and industrial wastewater treatment processes.
Wastewater management
Critical pH/ORP control for nitrification, de-nitrification and biological process optimisation.
Surface water monitoring
Long-term water quality monitoring of rivers, lakes and reservoirs for environmental compliance.
Drinking water
pH and ORP supervision in source water and treatment plant outlets.
Integration
Powered by the yDoc ML-525 datalogger
The ND-PHEHT connects directly to the yDoc ML-525 datalogger. The yDoc powers the sensor, schedules measurements, stores readings locally and transmits them to the Sensor-Online platform via 4G/LTE-M, NB-IoT, LoRaWAN, satellite or Ethernet — with up to 10 years of battery life.
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FAQ
Frequently asked questions about the ND-PHEHT
What does the ND-PHEHT measure?+
How often is calibration needed?+
Suitable for which water types?+
Ready to deploy the ND-PHEHT?
Get a quote, technical advice, or a complete bundle with the yDoc ML-525 datalogger and Sensor-Online platform subscription.