Model # NGD268

Internet #100651805

Store SO SKU #781975

General Tools Combustible Gas Leak Detector for Extreme Environments

General Tools

Combustible Gas Leak Detector for Extreme Environments

$15646 /each
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Product Overview

General Tools has grown to become the recognized industry leader for specialty hand tools and instruments. The NGD268 is a highly sensitive wide range gas detector that works from -40 degree to 158 degreeF. It can be used in mines and outdoor or underground construction projects to detect methane, natural gas, coal gas, hexane, propane, ethane, Butane, pentane, isopropyl alcohol, halogenated hydrocarbons, (Methanol, Ethanol, Butanol) ether, ketone, Hydrogen, toluene and other compounds, (gasoline, industrial solvent, lacquer, refrigerant, sulfur dioxide, ammonia, sulfured hydrogen, acetic acid, etc.).

California residents: see   Proposition 65 information

  • Banks of ten green, yellow and red LEDs indicate low, medium and high concentration levels
  • Audible and visual alarms for 20% and 50% LEL (lower explosive limit) thresholds
  • Adjustable sensitivity
  • Gas sensitivity: less than 50 ppm
  • 20 seconds warm up time, less than 3 seconds response time
  • Detects methane, natural gas, coal gases, hexane, propane, ethane, butane, pentane, isopropyl alcohol, halogenated hydrocarbons (methanol, ethanol, butanol), ether, ketones (butone, protone), hydrogen, toluene, gasoline, industrial solvents, lacquers, refrigerants, sulfur dioxide, ammonia, sulfured hydrogen, acetic acid
  • Combustible gas detector works from -40 degree to 158 degree F and suits it for demanding applications such as mining and tunnel construction
  • Long, flexible gooseneck probe

Info & Guides

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Name Plug-In Combination Carbon Monoxide and Natural Gas Alarm Pen Style Natural Gas Detector Combustible Gas Leak Detector for Extreme Environments Combustible Gas Leak Detector
Brand Universal Security Instruments General Tools General Tools General Tools
Ratings (7) (36) (4) (4)
Alarm Type Flame,Smoke Natural Gas Natural Gas Natural Gas
Power Source Battery Battery Battery Battery
Alarm/Detector Features Interconnected,Tamper Resistant Adjustable Sensitivity Adjustable Sensitivity Adjustable Sensitivity
View Product View Product View Product View Product



Coverage area (sq. ft)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Alarm Type
Natural Gas
Alarm/Detector Features
Adjustable Sensitivity
Calibration (% of LEL)
Connector/Contact Type
Fixed or portable
Gas(es) detected
Natural gas
Minimum detection (ppm)
Pack Size
Power Source
Response time (sec.)
Voltage (volts)

Warranty / Certifications

Certifications and Listings
No Certifications or Listings

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Customer Questions & Answers

Does each light/bar represent a PPM?

Does each light/bar represent a PPM?
Asked by: Joe
Since the gas detectors work on a large array of combustible gasses, there is no direct correlation between the bars and exact ppm readings.
Answered by: Diane Hewitt
Date published: 2017-04-06

I am anosnic (NO sense of smell... ); Would this be a good tool for investing gas/gasoline leaks etc.?

Asked by: jim
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Customer Reviews

Combustible Gas Leak Detector for Extreme Environments is rated 2.5 out of 5 by 4.
Rated 1 out of 5 by from Poorly made. I bought this & it showed up broken. The on-off switch was really loose & would not keep a charge. This is designed to save lives, don't use a poorly constructed product.
Date published: 2017-05-18
Rated 4 out of 5 by from Good Device Overall This device comes with a quick start guide that covers some initial steps to get the detector setup. The device works well and only requires an initial charge to be setup. For finding leaks it is solid. It would be nice if there was some additional information provided with the device. The basic functions and features are covered but there is no gauge to what sensor readings mean besides a level meter. I was new to this type of device and purchased it to check gas levels in my basement. I set the initial sensor at the most sensitive setting, started it outside in fresh air and then entered my home to test. It works well but if you are looking for a readout with more specifics you may want to read up and make sure this is what you are looking for. Overall the device is easy to use but hard to understand the gauge levels or other specifics. Leak detection works well for pipes or other systems.
Date published: 2011-01-24
Rated 1 out of 5 by from the Detector didn't work The detector didn't work. I charged the batteries and it still wouldn't work. every time I turned it on it would shut off itself. The good thing was that I didn't have to send it back. I was able to return it to the nearest Home Depot store.
Date published: 2015-08-04
Rated 4 out of 5 by from ok Tried this detector on my gas stove/range and found out that the burners was leaking gas .good product. .have yet to try it on a refrigerant line.
Date published: 2014-10-07
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