GT Fire Methane Gas Detector from 3M Scott Safety

The GT Fire Gas Detector is a dedicated hand-held methane detection meter specialized for the fire industry. This user friendly meter has an ergonomic design coupled with a rugged polycarbonate construction that ensures durability and ease of operation as standard. The GT-Fire allows leak detection to be conducted for flammable (PPM & LEL) gases as well as Carbon Monoxide (CO), Oxygen (O2), and Hydrogen Sulfide (H2S) should this be required. It enables firefighters to conduct leak detection investigations themselves without the need for specialized PPM detectors, whilst eliminating potentially frustrating periods of downtime waiting for support from gas engineers.

The GT-Fire has a simple interface that provides a quick, accurate and easy to understand display, enabling leak detection to be conducted via one instrument in a complete, professional and timely manner, with easy access to data simplifying the reporting process, providing fire fighter with confidence and assurance when called to safety-critical environments.

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  • ​User-friendly instrument with simple interface
  • Ergonomic design that is easy to operate
  • Visual and audible assistance to support investigation
  • PPM & LEL flammable gas ranges for leak detection
  • Manual and automatic datalogging
  • Loud audible and high visual ‘ticker’ (Geiger) on ppm range
  • Integral flashlight
  • Rugged polycarbonate case, sealed to IP54


Display LCD with backlight
Humdity 9-95% non-condensing
Alarms High visibility LEDs on both sides of instrument
85 dB audible alarm
All alarms user programmable via password protected menu
Sampling Integral pump with pressure sensor for flow fail detection, sample path is protected by a hydrophobic filter
Response Time T90 < 30 seconds
Battery 3 C cell batteries, LR14 alkaline
Battery Life 8 hours continuous
Construction High impact polycarbonate ABS blend
Rating IP54, dust protected and splashproof
Dimensions 11.4″ x 3.7″ x 1.7″
Weight 1.7 pounds
Certification UL 913 Class I, Div 1, Groups C & D
IECEx Ex iad IIB T3
Warranty 2 years

Sensor Specifications

Oxygen 0-25% 0.1%
CO 0-2,000 ppm 1 ppm
Hydrogen Sulfide 0-100 ppm 1 ppm
Dual Tox (CO/H2S) 0-2,000 ppm
0-100 ppm
1 ppm
Methane 0-10,000 ppm 1 ppm
Methane 0-100% LEL 1 %

Ordering Information

Each unit includes the detector, user handbook, Quick operating instructions, cal cert and configuration report. For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email

Catalog No.
GT-50 Fire Detector, ppm only
GT-51 Fire Detector, ppm LEL
GT-52 Fire Detector LEL & CO Sensors
GT-53 Fire Detector, LEL, CO & O2 Sensors
GT-54 Fire Detector, LEL, CO, O2 & CO Sensors 67F54
GT-Fire Software Suite, includes Infrared Serial Connector with USB interface, GT-Fire Calibration and data Download Software 67821
Replacement Wrist Strap
24″ Stainless Steel Flue Probe 67185
32″ S/End Barhole Probe


GT Fire Portable Gas Detector Literature

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