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BG40 gas detector

Highly sensitive, quick-response detection of even the smallest gas leaks

In the private or commercial sector, storing and using combustible gases such as natural gas, methane, ethane and propane ranks among the everyday risks not to be underestimated. On these grounds, you should regularly inspect gas cartridges and LPG containers at your home or on your boat as well as gas pipelines and fittings for leakage by use of a gas detector – like the BG40.

Owing to its high sensitivity, the compact hand-held measuring device BG40 registers even the smallest of gas leaks in less than two seconds – and with a sensitivity level of <10 ppm it alerts you even to minor gas concentrations via a visual and acoustic alarm signal topped off with a vibration alert. With increasing frequency and volume the acoustic alarm signal indicates a growing intensity of the escaping gas. 

A flexible tubular probe of 40 cm (15.75") length permits the detection and identification of a leak in poorly accessible and confined spaces. The gas detector comes equipped with a backlit LCD display on which the measured ppm values can be read at any time quickly and easily even in unfavourable lighting conditions. Also indicated is the lower explosive limit in % (often abbreviated as LEL); it defines the minimum gas concentration in the air at which an explosion is possible. 

The BG40 reliably detects combustible gases such as natural gas, methane, ethane, propane, butane, hexane, ethylene, acetaldehyde, formaldehyde, toluene, p-xylene, acetone, alcohol, benzene, ammonia, steam, carbon monoxide, petrol and hydrogen sulphide. 

A few practical benefits:

  • Gas warning device and gas detector in one device
  • Visual and acoustic alarm signal as well as vibration alert
  • Alarm frequency and volume in proportion to gas concentration
  • Large, easy-to-read display with additional indicator
  • Backlit LCD display
  • Automatic switch-off
  • Soft-touch function keys
  • 1/4-inch tripod thread
  • Simple single-handed operation
  • Optimum value-for-money ratio
  • Semi-rigid gooseneck probe of 40 cm length for the examination of poorly accessible locations


BG40 Gas Detector show in Trotec online shop

BG40 Gas Detector

Thanks to its high sensitivity, the compact hand-held measuring device BG40 records even the smallest gas leaks within just two seconds - and warns with a sensitivity of less than 10 ppm of the smallest gas concentrations by means of optical, acoustic, and vibration alarms.

You save: 28.49 £

123.39 £ 94.90 £ incl. VAT
Show net price (VAT not included)



Technical data
General information
  Article number 3.510.205.068
Combustible gases
  Min. measuring range [ppm] 0
  Max. measuring range [ppm] 10,000
  Accuracy 50 ppm
  Response time [s] 2
  Sensitivity <10 ppm
  Standard calibration Methane
  Alarm threshold x10:
0 up to 100 ppm, 100 up to 400 ppm,
400 up to 700 ppm, 700 up to 1,000 ppm,
0 up to 1,000 ppm, 1,000 up to 4,000 ppm,
4000 up to 7,000 ppm, 7,000 up to 10,000 ppm,
  Max. alarm level x10: >1000, x100: > 10,000
  Warm-up time Approx. 40 s
Housing design
  Gooseneck probe Length ca. 40 cm
Operating time
  Approx. 8h
Charging time
  Approx. 3 hours
Power supply
  Battery type 1 x 3.7 V/ polymer Li-ion battery internal
Surrounding conditions
  Operation - min. temperature [°C] 0
  Operation - max. temperature [°C] 40
  Operation – min. relative humidity [% RH] 10
  Operation – max. relative humidity (non-condensing) [%] 85
  Storage - min. temperature [°C] -10
  Storage - max. temperature [°C] 60
  Length (packaging excluded) [mm] 45
  Width (packaging excluded) [mm] 60
  Height (packaging excluded) [mm] 220
  (packaging excluded) - batteries included [kg] 0.428
Standard scope of delivery
Standard scope of delivery
  Measuring device
  Operating manual
Ascertainable measured values and functions
Internal sensors
  flammable gases
Functions and features
  Visual alarm function
  Acoustic alarm function (alarm frequency in relation to gas concentration)
  Vibrating alert
  Auto-Zero function
  Automatic switch-off
  Backlit display
  Gooseneck probe (40 cm)
  ¼ inch tripod thread

 standard equipment

 optionally available

 not available


Alternative products

BG40 with alternative products:

start comparison
BG30 Gas Detector show in Trotec online shop

BG30 Gas Detector

You should always have a BG30 around where flammable gases are stored. That's because the BG30 does not only detect gas concentrations in the air, it also alerts the user when certain thresholds have been exceeded. Ideal for campers and boat owners who like to check before setting sail or off.

You save: 28.49 £

104.40 £ 75.91 £ incl. VAT
Show net price (VAT not included)



Quick guide for BG40 gasdetector (INT)

Quick guide for BG40 gasdetector (INT)

TRT-KA-BG40-TC-001.pdf (2.0 MB)


Operating manual BG40 gasdetector (DE)

Operating manual BG40 gasdetector (DE)

TRT-BA-BG40-TC-001-DE.pdf (1.1 MB)


Operating manual BG40 gasdetector (EN)

Operating manual BG40 gasdetector (EN)

TRT-BA-BG40-TC-001-EN.pdf (1.1 MB)


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