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Refrigerant Gas Detection

Gas detection products and systems for Refrigeration, Air Conditioning and Industrial installations.



The Refrigeration Business Unit markets and supports a range of Refrigerant Gas Detection sensors and controllers, from single sensors to multiple sensor applications using solid state, electro-chemical and infra-red sensors. Our brands include MSA, Carel, Honeywell and Critical Environment Technologies (CETCI).

Resources > Guidance Note: Fixed Refrigerant Detection Systems for HFCs, HFC/HFO blends, HFOs and HCFCs 

MSA are a global leader in the development and production of dependable, high-quality toxic and flammable gas detection products & systems. The Primax P Gas Transmitter is MSA’s flagship product and the Utima X5000 is the latest generation Gas Monitor.

MSA PrimaX P Gas Transmitter
Designed to detect gases indoors or outdoors, the PrimaX P Gas Transmitter measures oxygen and toxic and combustible gases. The flameproof transmitter is housed in a powder-coated aluminum enclosure that will protect it in extremely dangerous conditions.
The unit also features a large, easy-to-read LCD screen and three LED status indicators for up-to-the-second reporting. The transmitter attaches to an integral mounting plate for easy installation, and it can be easily calibrated using the built-in keypad.

MSA ULTIMA® X5000 Gas Monitor
The ULTIMA® X5000 Gas Monitor is the future of gas detection for oxygen, toxic and combustible gases. MSA XCell® gas sensors with TruCal® technology offer calibration cycles up to 18 months (local calibration respected). The gas transmitter’s advanced, multi-lingual OLED display is easy to read and the unique touch-screen interface makes it simple to navigate.


CAREL – GLD Gas Leak Detection Sensors
CAREL offers the range of GLD sensors for detecting leakages of CFC, HFC, HFO and CO2 refrigerant gases, designed to meet all industrial refrigeration and air conditioning needs (supermarkets, shopping centres and other public places) in units that require continuous control and monitoring. The CAREL GD* series gas leakage detectors guarantee monitoring in rooms where there is a risk of gas leakages due to the installation of refrigerated units, providing prompt notification and thus ensuring cost savings by avoiding system stoppages.

When a leakage above a certain concentration is detected, the sensor sends a signal to the connected controller or supervisor. An alarm is also displayed locally with an audible and visual signal. Available in versions with semiconductor sensitive element and infrared for CO2. The user interface is the dedicated app ‘Rileva’ which is available for free for IOS and Android.


Honeywell Analytics
XNX Universal Transmitter:
A universal transmitter compatible with all  Honeywell Analytics gas sensor technologies
XNX is an extremely flexible transmitter that can be configured to accept an input from any of the Honeywell Analytics range of gas sensor technologies. It can also be configured to provide a wide variety of industry standard output signals.  This enables users to have a single type of interface to all their gas detection needs, even when different types of detectors are employed, to most effectively address the different gas detection applications on site.

EC-FX-NH3: A new and improved approach to ammonia gas detection
In response to the challenging conditions found in Industrial Refrigeration,  Honeywell Analytics has developed an innovative new ammonia detector – delivering reliability, accuracy and long-lasting performance that you can’t get anywhere else.
The EC-FX-NH3, an evolution of the Manning EC-F9-NH3, features an all-new ammonia sensor with a  proprietary electrolyte that stands up to harsh environments. So whether you’re monitoring ammonia in blast freezers,  cold storage or engine  rooms, you can feel  confident in the  effectiveness of your gas detection system, helping you ensure life safety, prevent food spoilage and manage costs.


Critical Environment Technologies (CETCI)
Early detection of a refrigerant leak helps prevent dangerous health consequences to occupants, reduces significant loss of expensive refrigerant and decreases energy costs. If a leak does occur, a fixed gas detection system will ensure people will be alerted and kept safe. Critical Environment Technologies’ offers a wide range of refrigerant gas detectors with a solid state refrigerant sensor which provides an economical and reliable gas detection solution. Range includes sensors designed for public spaces and industrial applications from the cGAS, LPT, ART, LPT range.

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