Direct Download, No Paper Chart Hydrant Pressure Monitoring

The simplicity of the compact, battery-powered Telog HPR-31 enables you to put it to work within minutes of unpacking. Once installed, the Telog HPR-31 measures water pressure at user programmable rates up to four samples per second with its internal pressure transducer. You can determine how often such data is summarized for reporting. The recorder computes any combination of minimum, average and maximum pressure measurement at each interval according to your selection of statistics and recording intervals. Recorded data may be gathered via an RS-232 connector using a handheld device or a laptop.

Battery Power

All Telog hydrant pressure recorders have low power requirements so they can be battery operated. The Telog HPR-31 series uses an AA 3.6v Lithium battery that can last up to five years.

Packaging and Installation

Every hydrant pressure recorder from Telog is a low-profile, rugged unit that is easily installed by one person on a standard 2.5 inch hose nozzle outlet. For ease of mind an optional security cover can be used to prevent vandalism

telog hpr-31

telog hpr-31

Telog HPR-31 applications include:

  • Investigating pressure complaints
  • Fire flow testing
  • Pressure loss tests
  • Calibrating hydraulic models
  • Monitoring system pressures
  • Hydrant capacity testing
  • High speed sampling to 4 samples/sec

Get the Telog HPR-31

Five of the most popular uses for the Telog HPR

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Click here to see a wireless version of the Telog hydrant pressure recorder.



Model: Telog HPR-31

-- Type: Strain gauge, isolated pressure sensor
-- Range (psi): 100, 200, 300 (contact Telog for other ranges)
-- Over pressure: 300, 600, 600
-- Burst pressure: 850, 1000, 1000
-- Resolution 0.025% of full scale, 12-bit
-- Accuracy: ±0.25% of full scale at constant temperature
-- Temperature effect: ±0.015% of full scale per ºF

-- Sample rate: Programmable from 4/sec up to 8 hours
-- Data interval: Programmable from 1/sec up to 8 hours
-- Values saved: Selectable min, avg & max per interval
-- Memory: 128 Kbytes (~80,000 data values)

-- Type: RS-232 | 300 to 19.2 Kbaud
-- Connector: Circular 4 pin watertight

-- Type: Factory installed single AA Lithium | Saft LSH 14500 or equal
-- Life: 5 years typical

Environmental and Mechanical
-- Temperature:
     --- Operating 14 to 149ºF
     --- Storage -40 to 149ºF
-- Humidity: 0-100% relative humidity
-- Enclosure: NEMA 4x/IEC IP65
-- Size: 5" diameter x 3.5"
-- Thread: Hydrant mount: 2.50" NHT standard (Contact Telog for non standard thread) | Internal mount: 1/4" NPT

Support Software
-- Telogers for Windows
-- Telogers for Windows Lite

Get the Telog HPR-31

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