Refrigerant - Freon Gas Detectors

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A refrigerant gas leak detector, also known as a freon gas leak detector, or just refrigerant gas detector or freon gas detector, makes it possible to sense the presence of refrigerant-freon gases in the environment.

Many industrial configurations require installation of a refrigerant leak detection system because these gases represent a risk of severe asphyxia, potentially lethal.

Whether the refrigerant gases used in cold storage wharehouses or in air conditioned houses, hotels, offices buildings with HVAC systems, these freon gases are undetectable (colorless, odorless) by humans, which is why the use of a refrigeration system detection is essential.

Refrigerant-Freon gas categories

CFC’s (chlorofluorocarbons)
R11, R12, R113, R115, R502

HCFC’s (hydrochlorofluorocarbons)
R21, R22, R123, R124, R401a, R402a, R408a, R409a

HFC’s (hydrofluorocarbons)
R32, R125, R134a, R15a, R143a, R152a, R404a, R407a, R410a, R507


Installation positioning of the refrigerant-freon gas detector is critical for its functionality.

Since HFC /HCFC is heavier than air, the Refrigerant-Freon gas detector should be mounted 0.2 meter above floor level.

The Refrigerant-Freon gas detector controls the air in its proximity, so the Refrigerant-Freon gas detector should be placed as close as possible to the potential leak, taking into account the ventilation and air movements in the area.

The rule of thumb is that a Refrigerant-Freon gas detector covers approximately 50 m2 in an enclosed area without obstacles


The Refrigerant-Freon gas detector has limited selectivity for different types of gas.

If the Refrigerant-Freon gas detector is placed in the environment in which other gases or fumes may be present, these compounds might generate false alarms. Examples of substances that can cause false alarms are perfumes, hair spray, petrol fumes, solvents, cleaning agents-cleaning liquids, cigarette smoke, etc.