GMI GT-Fire Handheld Gas Leak Detector for Fire Service
Purpose-built handheld methane leak detector for firefighters, with ppm and %LEL ranges, Geiger-style ticker, pumped probe and optional CO or CO/O2/H2S.
- Woman-owned · HUB-certified
- Tax-exempt & POs accepted
- Calibration & repair
Overview
The GMI GT-Fire is a handheld gas detector designed specifically for fire departments answering odor-of-gas calls and gas alarm activations. Where a personal 4-gas monitor is built to protect the wearer, the GT-Fire is built to find the leak: a semiconductor sensor reads methane down to single-ppm resolution so crews can trace low concentrations back to the source, while a catalytic sensor covers 0-100% LEL for flammability assessment.
After evacuation, crews can run a full leak investigation with one instrument instead of standing by for the utility. An integral pump with flow-fail detection draws the sample through a flexible probe, a loud audible and highly visible 'ticker' rises with concentration on the ppm range, and a built-in flashlight helps in basements, meter rooms and crawl spaces. Higher models add CO, O2 and H2S for occupant and crew safety.
The GT-Fire runs about 8 hours on three standard C-cell alkaline or rechargeable batteries, carries UL 913 Class I Div 1 intrinsic-safety approval, and logs readings both manually and automatically so incident data can be downloaded for reports.
- Dedicated fire-service leak investigation instrument, not a personal monitor
- Methane 0-10,000 ppm (semiconductor) for pinpointing low-level leaks
- Methane 0-100% LEL (catalytic bead) on GT-Fire 51 and up
- Optional CO, O2 and H2S sensors depending on model
- Loud audible and high-visibility Geiger-style ticker on the ppm range
- Integral sample pump with pressure-sensed flow-fail detection and hydrophobic filter
- Integral flashlight and backlit LCD
- Manual and automatic datalogging with PC download for reporting
- Alarm LEDs on both sides plus 85 dB audible alarm; alarms user-programmable behind a password
- Runs on 3 C-cell alkaline or rechargeable batteries - about 8 hours
- Rugged polycarbonate/ABS case sealed to IP54
- 2-year warranty
Specifications
| Performance | |
| Response time | T90 < 30 s |
| Display | Backlit LCD |
| Alarms | High-visibility LEDs on both sides; 85 dB audible; user-programmable (password protected) |
| Power | |
| Battery | 3 x C-size (LR14) alkaline or rechargeable NiMH |
| Battery life | Approx. 8 h continuous |
| Physical | |
| Construction | High-impact polycarbonate/ABS blend |
| Dimensions | 290 x 95 x 43 mm (11.4 x 3.7 x 1.7 in), excluding probe |
| Weight | 0.78 kg (1.7 lb) including probe and batteries |
| Approvals & Warranty | |
| Ingress protection | IP54 |
| Certifications | UL 913 Class I, Div 1, Groups C, D; CSA Class I, Div 1, Groups C, D; ATEX II 2G; IECEx |
| Warranty | 2 years |
| Other | |
| Specification | Value |
| Methane (ppm) | 0-10,000 ppm, 1 ppm increments, semiconductor |
| Methane (LEL) | 0-100% LEL, 1% increments, catalytic bead (GT-Fire 51-54) |
| Carbon monoxide (CO) | 0-2,000 ppm, 1 ppm increments, electrochemical (GT-Fire 52-54) |
| Oxygen (O2) | 0-25%, 0.1% increments, electrochemical (GT-Fire 54) |
| Hydrogen sulfide (H2S) | 0-100 ppm, 1 ppm increments, electrochemical (GT-Fire 54) |
| Sampling | Integral pump with pressure sensor for flow-fail detection; hydrophobic filter in sample path |
| Operating temperature | -20 to 50 C (-4 to 122 F) |
| Humidity | 0-95% RH non-condensing |
| Included | GT-Fire instrument; 3 x C-size alkaline batteries; GT-Fire calibration and datalogging software on USB, with IR adapter |
Documents 1 PDF
Calibration & repair from FarrWest
Calibration, repair and maintenance for your detection instruments.
