COMlog IS is an intrinsically safe, highly versatile data logger designed to be a multi-application data logging solution.

COMlog IS is designed to be mounted in close proximity to either a commercial or domestic gas meter, but can also be used on any other utility meter that has a pulsed output.

Particularly effective for smart metering, COMlog IS provides businesses with an efficient way of managing water and energy consumption and reducing costs.



COMlog IS uses accumulative pulse counting technology to calculate index readings against a known volume.

COMlog IS transmits data though an integral modem with GPRS/2G, 4G, LTE-M (Cat-1) and other NBIoT cellular options available.

The robust system is supplied with many features, including:

Fast logging for high-level consumption analysis, a range of comprehensive alarms, the ability to upgrade and programme over-the-air without the cost of an onsite visit and the device being fully sealed and submersible to IP68.


Key Features and Benefits

  • Certification: certified for use in Zone 0 hazardous areas:
    • Intertek ITS19ATEX205070X & IECEx ITS 19.0030X
    • Ex ia IIC T4 Ga (-20oC < Ta < +60oC)
  • Telemetry: NBIoT LTE-based cellular communication standard with fallback 2G capability
  • Excellent value: reliable and cost-effective

  • Accessible data: near-real time data at low cost

  • Flexible alarm modes: High Flow, Low Flow and Profile Alarms

  • Easy integration: designed for easy integration into third party software applications via DataGate API

  • Online data viewing: via HWM Online – the multi-utility data monitoring system

  • Long-term monitoring: typical 5 year battery life

  • External antennas: support improved signal strength - contact HWM for more information

  • Wireless programming: units can be upgraded and programmed without the cost of a site visit

  • Responsive: accelerated dial in on alarm


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HWM-Water Ltd
Ty Coch House
Llantarnam Park Way
Cwmbran, NP44 3AW
T: +44 (0) 1633 489 479 F: +44 (0) 1633 877 857 E: [email protected]
The Queen's Award for Enterprise: Innovation 2017
A Halma company
ISO 9001 ISO 14001 ISO 18001 ISO 27001