Direct Download, No Chart Recorder Hydrant Pressure Monitoring with Impulse Event Capture Capability

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 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-31i

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Click here for the wireless version of the Telog hydrant pressure recorder with impulse capability.



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Model: Telog HPR-31i

-- 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

Impulse Off (Normal Mode)
-- Sample rate: Programmable from 1/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)

Impulse On
Note: Normal mode interval data also stored during impulse recording in separate memory.
-- Sample rate: Programmable from 20/sec to once every 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) interval data memory plus 250 impulse events

-- 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: Sample rate dependent: e.g. 5 years at 1 sample/sec; 18 months at 20 samples/sec

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-31i

Request a Quote