Övervakning av vatten
ND-PR21 Pressure Probe G1/4\"
What is the ND-PR21? The ND-PR21 is a compact pressure, liquid-level and temperature transducer with a standard G1/4\" pipe thread — designed for in-line installation in pipelines, district-heating systems, water distribution networks and pressurised tanks. Its piezoresistive cell covers −1 to +10 bar with 0.15 % linearity, ideal for leakage detection, pump monitoring and tank level applications connected to the yDoc ML-525 datalogger.
The ND-PR21 is a compact pressure, liquid-level and temperature transducer with a standard G1/4\" pipe thread — designed for in-line installation in pipelines, district-heating systems, water distribution networks and pressurised tanks. Its piezoresistive cell covers −1 to +10 bar with 0.15 % linearity, ideal for leakage detection, pump monitoring and tank level applications connected to the yDoc ML-525 datalogger.
Key parameters
What the ND-PR21 measures
Pressure
Piezoresistive transducer, −1 to +10 bar range
Temperature
–40 to +110 °C, typ. ±2 °C
G1/4″ thread
Standard pipe fitting for in-line installation
Direct integration
2 m cable to the yDoc ML-525 over SDI-12
Specifications
Technical specifications
Applications
Where the ND-PR21 is used
Tank level
Liquid-level measurement in pressurised storage tanks via standard side-port fitting.
Pipelines
In-line pressure monitoring of water and process pipelines.
District heating
Hot-water network pressure and temperature for district heating supervision.
Water distribution
Pressure-zone monitoring in municipal water networks for hydraulic management.
Leakage detection
Pressure-pattern analysis for leakage detection and burst prediction.
Pump monitoring
Suction- and discharge-side pressure monitoring for pump performance and protection.
Integration
Powered by the yDoc ML-525 datalogger
The ND-PR21 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.
More in this category
Related water monitoring sensors
Optical Dissolved Oxygen & Temperature Sensor
Optical dissolved oxygen sensor without membrane or electrolyte. The optical method delivers minimal calibration drift a…
pH, ORP & Temperature Sensor
Industrial pH, ORP and temperature probe for long-term monitoring of surface water and process water. Robust glass elect…
Optical Turbidity & Temperature Sensor
ISO 7027 optical turbidity meter for drinking water, surface water and wastewater. Self-cleaning brush option keeps the …
FAQ
Frequently asked questions about the ND-PR21
What does the ND-PR21 measure?+
How is it installed?+
What pressure ranges are available?+
Ready to deploy the ND-PR21?
Get a quote, technical advice, or a complete bundle with the yDoc ML-525 datalogger and Sensor-Online platform subscription.