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Gascheck G

Gascheck G1/2
Gascheck G1/2 | Universal Leakdetector

As the smallest and lightest hand-held leak detectors, the GASCHECK G series instruments are ideally suited for industrial leak detection, featuring a detection range of 1E-5mbar l/s for helium.


  • Overview
  • Properties
  • Features
  • Applications
  • Delivery Scope

As the smallest and lightest hand-held leak detectors, the GASCHECK G series instruments are ideally suited for industrial leak detection, featuring a detection range of 1E-5mbar l/s for helium. Due to the different versions G1, G2 and G3, the instruments can be adapted to the exact requirement of the application.

A special feature is the update capability of the leak detectors. The GASCHECK G models can be upgraded to a higher version at any time – on site.

In addition, these universally applicable leak detectors are easy to operate and form a powerful tool for locating leaks.

Mains-independent battery operation

This battery-powered device weighs only 600 grams and detects all gases that differ in their thermal conductivity from the ambient air. The standard scope of delivery includes an impact-resistant carrying case, two battery holders, a tool for quick probe change and a flexible measuring probe. The leak detectors G1, G2 and G3 come with a basic calibration for helium, but also offer the possibility to select other common test gases in industrial environments.


Work practice oriented

The easy-to-clean membrane keypad, in conjunction with the robust housing and the backlit display, enables the device to be used even under harsh environmental conditions.

Thanks to the integrated sound output, leaks can be found comfortably even without direct visual contact to the leak detector. The probe is simply moved over the surfaces to be inspected (e. g. weld seams or flange connections, etc.). Leaking test gas is picked up and immediately indicated on the display. The operator is supported by useful functions for leak detection.

The automatic measuring range changeover ensures operation in the most sensitive range possible at all times. A peak value memory can be activated to display the highest measured leak rate directly in [ml/s].

  • Detects all common gases such as helium, argon, hydrogen, etc.
  • Detects all refrigerants
  • Weighs just 600 g
  • Mains-independent battery operation
  • Updateable to higher versions
  • Supplied with impact-resistant carrying case, two battery holders, tool for quick probe change, flexible measuring probe.
  • Suited for use under harsh environmental conditions
  • Integrated audio output
  • Automatic measuring range switching
  • Detection range of 1E-5mbar l/s for helium

The GASCHECK G1, G2 and G3 instruments are used for leak detection on e.g.:

  • Gas supply systems
  • Duct systems
  • Laboratory GCs
  • Connector systems
  • Flat roof bays
  • As well as all gas-filled systems or testing equipment in the chemical industry and power plant engineering
  • and many more.
  • 1x GASCHECK G1 / G2 or G3
  • 1x Tool for sniffing probe exchange
  • 1x Battery holder
  • 4x Mignon AA batteries
  • 1x User manual in English
  • 1x International calibration certificate


Delivery time 3 – 4 weeks

Warranty 12 months


Technical Data

The technical data at a glance

  • Detector
    Thermal conductivity detector
  • Sensitivity
    He 1 x 10E-5, CH4 2,9 x 10E-5, Ar 3,5 x 10E-5, H2 7,7 x 10E-6 [ml/s]
  • Response time t90
    approx. 1 s
  • Recovery time t10
    approx. 1 s
  • Audio
    Frequency change proportional to leak rate
  • Display
    LCD with backlight
  • Battery type
    4 Stück AA (Mignon)
  • Battery lifetime
    40 h continuous leak detection
  • Certifications
    CE EN 61010-1:2001 and EN 61326-1:2006
    Calibration according to NAMAS/NIST
  • Dimension
    L 390 x W 60 x D 50 mm (Leak detector)
  • Weight of leak detector
    0,5 kg (incl. batteries)
  • Weight with carrying case
    1,6 kg
  • Show all



Title Order number Description
CalCheck Provides self-calibration in cc/sec leak rates of ION Science leak detectors. Gasdetektion Dichtheitsmessung ISM CalCheck
Long Probe A-08045 Used to gain access to leaks in hard to reach areas. Attachment is 30 cm. Gasdetektion Dichtheitsmessung ISM Lange Sonde
Short Probe A-08043 Used to gain access to leaks in hard to reach areas. Attachment is 10 cm. Gasdetektion Dichtheitsmessung ISM Kurze Sonde
Probe Cover 08024CPC8 Protects the inner probe from damage. Gasdetektion Dichtheitsmessung ISM Sondenabdeckung
Battery Holder 1-BH-01 Accepts 4 x AA size batteries and connects to the instrument via a clip. Gasdetektion Dichtheitsmessung ISM Batteriehalter
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