GAS-Mate® Combustible Gas Leak Detector

Safely detect flammable refrigerant and combustible gas leaks!

INFICON raises the bar on combustible gas detectors with GAS-Mate, the ideal tool for locating leaks in forming gas, flammable refrigerant, or combustible heating and appliance applications.  GAS-Mate is also intrinsically safe, so you can leak check with confidence.

GAS-Mate outperforms other models with twice the sensitivity of many competitors - down to 5 ppm methane, the main component of natural gas. GAS-Mate also detects many other combustible gases, such as ammonia, propane, ethanol and hydrogen sulfide.

No calibration is required for GAS-Mate or its field-replaceable sensor. Simply turn the unit on, allow it to warm up for a few seconds and it is ready to quickly pinpoint any gas leaks present.

To prove that GAS-Mate has the performance and durability for your job, it carries an industry-leading, 3-year over-the-counter replacement warranty – three times what most other manufacturers offer.


  • Sensitive to 5 ppm methane
  • Also detects natural gas, forming gas, propane, butane, cyclopentane, ethane, ethanol, isobutane and ammonia
  • Great for flammable refrigerants like R290, R600a, and R441a!
  • Detects forming gas (95% nitrogen, 5% hydrogen)
  • Auto zeroing for ignoring background gas levels in leak test area
  • Small sensor and probe tip permit leak checking in tighter places
  • Certified intrinsically safe by MET Laboratories for use in combustive/explosive environments


  • Multiple LEDs, variable intensity audio alarm indicate leak strength
  • Adjustable sensitivity helps pinpoint leaks fast
  • Made in the USA
  • Three year replacement warranty


Type GAS-Mate
Power source 2 D-size (1.5V) alkaline batteries, included (use Duracell® MN1300 to maintain intrinsically safe approval)
Controls Power button, sensitivity touch pad
Base unit includes Sensor, two D size alkaline batteries, hard plastic carrying case
Sensitivity 5 ppm methane
Weight with batteries 1.54 lb. (0.700 kg)
Certifications Intrinsically Safe for Class I, Division I, Groups A-D, T4 and II 3G Ex nA nL IIC T4 X as per MET Laboratories Listing #E112145
Battery life 25 hours
Alarm indicators Multiple LEDs, variable intensity audio alarm
Warranty (replacement) 3 year

Part Number

Part Number Description
718-202-G1 GAS-Mate
718-202-G2 GAS-Mate with Spanish manual
718-202-G4 GAS-Mate with Japanese manual


Part Number Description
706-700-G1 GAS-Mate replacement sensor
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