Gas Detection & Meter Solutions

Call: 01707 270404

Welcome to Herts Meter Co Ltd.

Hertsmeters is your one stop gas detection and meter solutions providers. Specialist suppliers of display instrumentation. HMC offers the latest leading edge technology and design features available today for the instrumentation and process control industries.

Our Products

KombiAlarm Narcotic Gas Alarms

The KOMBIALARM family is a Combined fully automatic LPG and Sleeping gas alarm warning system with specially designed built-in sensor and audio signaling units. All sensors are high quality 5 year life design.

The KOMBIALARM-COMPACT Single Sensor Unit is designed for vehicles up to approx. 7 meters in length where a single sensor unit is sufficient to detect any gas well before the gas becomes volatile or explosive.

The KOMBIALARM-Plus is designed for larger vehicles where additional remote sensors can be fitted and a switching relay allows for connection to a separate alarm or warning device (flashlight etc). Remote sensors are available in two versions, KO/LPG for the detection of LPG and Narcotic (KO-gas) and a CO sensor to detect carbon monoxide.

The KombiAlarms will detect the smallest concentration of sleeping gas before it renders the occupants unconscious.

Alarm thresholds are fully automated and set well below the level that the gases become volatile.

  • Low power consumption.
  • Operates from a standard 12 Volt DC supply.
  • Can be plugged into cigarette socket
  • For use in: Caravans, Motorhomes, Apartments, Boats & Lorry Cabs

For more information click here to download the PDF documentation .


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Type KO/LPG Remote sensor unit for KOMBIALARM Plus

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Type CO Remote sensor unit for KOMBIALARM Plus

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Accessory Unit

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"Customer B"

We purchased the KOMBIALARM Plus from Herts Meter. The product is brilliant and we received a fast and proffessional service from Herts Meter.

"Customer A"

We received fantastic service from Herts Meter. Their products work really well. We purchased the KOMBIALARM Compact for our caravan and we are very happy with our purchase.