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Model #ET120

Combustible Gas Leak Detector

  • Gas Leak Detector with 18 in. flexible gooseneck
  • Combustible gas detection range: 50 to 10000 ppm
  • Easy to use tester with audible and visual alarms
  • See More Details

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Product Overview

The Klein Tools Combustible Gas Leak Detector is the perfect choice for HVAC professionals. The ET120 is an easy-to-use tester that provides audible and visual alarms in the presence of methane, propane and other combustible gases at concentrations as low as 50 ppm. It includes the detector, 4xAAA batteries, instruction manual and storage pouch.
  • Detection range: 50 to 10,000 ppm (based on methane)
  • Two levels of sensitivity: High (Approximately 50 to 1000 ppm) and Low (Approximately 1,000 to 10,000 ppm)
  • 5 red LED’s (visual) and 85db audible alerts that increase with gas concentration
  • Automatic zero-point calibration at power-up
  • 18 in. flexible gooseneck expands sensor reach; clips onto device for storage
  • Over-molded body for comfortable grip
  • Auto power-off after 10-minutes of non-usage conserves battery life



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Info & Guides

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Specifications

Dimensions

Product Depth (in.)
1.7900 in
Product Height (in.)
8.09 in
Product Width (in.)
2.7100 in

Details

Alarm Type
Propane
Alarm/Detector Features
No Additional Features
Battery Type Required
AAA
Calibration (% of LEL)
0
Connector/Contact Type
None
Fixed or portable
Portable
Gas(es) detected
Other
Included
Batteries
Minimum detection (ppm)
50
Pack Size
1
Power Source
Battery
Response Time (sec.)
3
Returnable
90-Day
Voltage (volts)
0

Warranty / Certifications

Certifications and Listings
No Certifications or Listings

Questions & Answers

12Questions23Answers

Does this tester detect natural gass along with propane?

Asked by Johnny March 7, 2021
2
Answers

Yes, the ET120 is an easy-to-use tester that provides audible and visual alarms in the presence of methane, propane and other combustible gases at concentrations as low as 50 ppm.

Can you replace the sensor tip so in 3-5 years I don’t have to replace the whole unit? Because K...

Asked by APM January 14, 2021
1
Answer

There are no user-serviceable parts inside the tester. The sensor life expectancy is 5-7 years. When ALL lights on the tester are illuminated, the sensor has failed and the unit must be serviced. If your sensor has failed please contact Klein Tools at 1-877-775-5346 or customerservice@kleintools.com for further details.

Can you replace the sensor tip so in 3-5 years I dont have to replace the whole unit? because Kle...

Asked by stoli49 December 4, 2020
1
Answer

There are no user-serviceable parts inside the tester. If your sensor has failed please contact Klein Tools at 1-877-775-5346 or customerservice@kleintools.com for further details.

Will this detector sniff automotive Freon leaks

Asked by Jerry August 30, 2020
2
Answers

The Klein Tools model # ET120 Combustible Gas Leak Detector is not designed to detect Freon.

How hard is it to replace the sensor when it expires? Are the replacement senors easy to obtain?

Asked by FredFlintstone May 16, 2020
1
Answer

There are no user-serviceable parts inside the tester. If your sensor has failed please contact Klein Tools at 1-877-775-5346 or customerservice@kleintools.com for further details.

would this work for detecting gasoline leaks on vehicles

Asked by JB April 18, 2020
2
Answers

Yes, it detects any combustible gas.

will this work on m099 Freon for hvac

Asked by Tuga January 16, 2020
2
Answers

No it won't. It only detects "combustible" gasses.

This works for propane for sure?

Asked by andrew September 30, 2019
3
Answers

Absolutely Andrew. I've successfully used mine for that many times. The built-in dual range capability makes it easy to detect leaks large and small.

Does this detect carbon monoxide?

Asked by RS January 10, 2019
5
Answers

Only combustable gas, so no

will this detect sewer gas?

Asked by CJ January 8, 2019
4
Answers

Yes. It detects any combustible gas, including propane/butane, sewar gas (rmethane), natural gas, gasoline, etc.

Combustible Gas Leak Detector - page 2

Customer Reviews

  • 4.5
    out of 58 reviews
  • 90% recommend this product
Filter by:
Showing 1-10 of 58 reviews
A handheld, battery powered instrument for detecting the presence of methane, propane or butane, this device will easily fit into ones tool bag and, as it is rated for being dropped from 6.6 feet, should survive the rigors within, especially if kept in the supplied zippered pouch. Powered by four “AAA” cells (provided with the instrument), a five bar LED display (along with an audible alarm) indicates the proportional concentration of combustible gas detected. In the low sensitivity range it will detect from 1,000 td 10,000 parts per million (ppm) of combustible gas; in high sensitivity range from 50 to 1,000 ppm. The audible alarm can be muted if desired, if the sound is objectionable. A flexible eighteen inch “gooseneck” is provided to permit snaking the sensor head in and around obstructions. Before using, one initiates a zero calibration cycle (in an area known to be free of combustible gas)by depressing the power button for 3 seconds, which starts the device on a 50 second self-calibration cycle (see video). The sensor is rated for a 3 second response time and is claimed to have a lifetime of 5 to 7 years (the failure of which will be annunciated by ALL the indicator LEDs illuminating), at which time factory service is required. The device may be hand held or mounted to a tripod via the ¼-20UNC tripod mount. An auto-power off feature is provided, to conserve battery life, that will turn the instrument off after 10 seconds. One may turn this feature off if it will be necessary to keep the instrument operating in excess of 10 minutes. A “data hold” button is provided to retain the last measurement (for later recording). The four “AAA” batteries are contained in a removable cartridge, facilitating removal for replacement and/or when use is not anticipated for a while. Low battery condition is annunciated by both the high alert and low alert LEDs illuminating at the same time. Another positive to the battery “cartridge” is that, should one leave batteries in for an extended period, any corrosion should be limited to the cartridge rather than damaging the instrument internals. As shown in the video, the device quickly responded to the residual natural gas remaining after the valve for a stovetop burner was briefly opened and closed (without igniting the gas). Even with the ventilation fan running in the range hood, the instrument was sensitive enough to detect the residual gas. In summary, this instrument would be a great addition for HVAC techs, plumbers and appliance techs who want to verify that there are no leaking fittings, devices or piping.
by DonK
1 person found this helpful
Five Stars for value, ease of use, and accurate measurements! To test this leak detector, I acces...
Five Stars for value, ease of use, and accurate measurements! To test this leak detector, I accessed a natural gas line that had been capped off. I removed the cap, turned on the gas for a quick second, then replaced the cap. The leak detector was turned on in accordance with the directions, then brought into the space with the gas line. It quickly sounded an alarm and flashed the lights. Even after turning on a fan to dissipate the small amount of gas released, this continued to detect gas, albeit at a reduced volume. I'll be using this for annual inspections of gas fittings in my home, and in the homes of family and friends. Highly recommended, especially since I once had small gas leaks in my house in the past!
by mophead
3 people found this helpful
by Inspector
It takes about 5 seconds to get an accurate reading,...
It takes about 5 seconds to get an accurate reading, but it’s very sensitive. Best tool purchase I’ve made in a while. Slow response an acceptable trade for home use and low price.
by HomeDepotCustomer
by
Excellent design and function. I wouldn;t change a thing....
Excellent design and function. I wouldn;t change a thing.
by WENDELL
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
It does the job for me, love it.
It does the job for me, love it.
by Chepo
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Showing 1-10 of 58 reviews