HPR 32

The Communicating Intelligence of your Hydrants

The HPR range of pressure recorders provides a very simple solution for the monitoring of distribution pressures on water networks and the diagnosis of anomalies (abnormal drops or rises, water hammer, etc.).

The HPR32A and HPR32iA models are the ‘high end’ models with extended performance and integrated telemetry.

See HPR31 and HPR31i models for entry-level, more economical solutions with manual data collection.


  • Monitoring of distribution pressures and alert in case of anomaly
  • Identification of abnormal pressure transients (HPR32iA)
  • Checking flows and capacities
  • Fire safety guarantee
  • Validation of hydraulic models
  • Citizen pressure tests (sprinkler system adapter)

Main benefits

  • Very simple installation on hydrant or sprinkler valve
  • Discreet and secure integration into the hydrant
  • Simultaneous measurements at several network terminals
  • Recording of measurements with time and date stamps
  • Can be coupled with other data loggers installed on the pipes
  • Fewer staff required for measurement campaigns
  • Associated software for data processing and analysis
  • Location of fire hydrants and other network equipment on mapping software (GIS option)
  • Automatic transmission of alarms and measurements by cellular telemetry
  • Accessories available for easy testing of fire hydrant capacity/flow rates


  • Models HPR32A (standard) and HPR32iA (with ultra-fast transient measurements, water hammer...)
  • Battery Powered (1 to 5 years, depending on the setup)
  • 4G/LTE cellular communication (transmission of measurements and alerts)
  • Bluetooth wireless communication BLE 4.1 (up to 6 m)
  • Ranges 0/100 psi, 0/200 psi, 0/300 psi (HPR32A)
  • Ranges -15/200 psi, -15/300 psi (HPR32iA)
  • NSF/ANSI 61 and 372 certified
  • Programmable sampling rate:
    — 4/sec to 8 hours (HPR32A)
    — 256/sec at 8 hours (HPR32iA)
  • Programmable recording frequency between 1/sec and 8 hours
  • Base capacity: 82,000 data readings (Min, Average, Max values)
  • Transient capacity (HPR32iA): 125 events, 41,000 pre/post-transient data readings
  • Transient events detected on configurable threshold values (rate of change of pressure, positive or negative)
  • Accuracy: +/- 0.25% of full scale
  • Resolution: 0.025% full scale

Related products

  • Fire hydrant capacity testing equipment
  • Accessory for connection to garden hose
  • Associated software, in Cloud Hosting mode or installed on your own network:
    — Trimble Unity Cloud Platform
    — Telogers Enterprise software

Related pages


Data Logger HPR 32 + map
HPR32 - field
PreviousHPR 31
NextPLCs and Telemetry