GasCheck G3


Introduced as an enhanced replacement for the popular GasCheck 3000, the Gascheck G3 incorporates a new backlit dot matrix LCD for improving viewing in poor lighting and leak rate indication by both flashing LED and sounder, for easier use in all environments. In addition the GasCheck G3 has a new tactile keyboard with fewer keys and improved temperature stability for better performance in uncontrolled areas.

Features and Benefits

  • Detect leaks with automatic and direct display of gas leak rate
  • New, simple to interpret graphical icon display menu
  • Choice of readings in cc/sec, mg/m3 or ppm
  • Rapidly detects almost any known gas mixture – particularly sensitive to ammonia, argon, butane, helium
  • Data logging facility – 10 data points with date and time stamp


  • Quality assurance testing on manufactured component seals
  • Laboratory applications, such as the detection of leaks from gas chromatographs, from mass spectrometers, from gas cylinders and fittings
  • Industrial applications, such as the detection of leaks from gas installations, in cylinder receiving rooms, from pipeline assemblies, the detection of leaks from stored gases and the detection of vapours released from stored chemicals
  • Medical applications, such as the detection of leaks from gas bottles and pipelines  and leak testing of membrane materials, glove boxes and so forth
  • Pneumatic applications, such as leak testing of pipeline joints, gaskets and so forth
Technical data  
Detector Micro thermal conductivity sensor
Min detectable limits of some common gases:  
R134A 5.8x10-5 cc/sec
Helium 1.0x10-5 cc/sec
Argon 3.5x10-5 cc/sec
Carbon Dioxide 4.0x10-5 cc/sec
Sulphur Hexafluoride 2.2x10-5 cc/sec
Response/Recovery time  
Short probe 1s
Long probe 9s
Data logging 10 data points with date and time stamp
Batteries 4 off AA Alkaline or NiMH
Operating temp range 0 to 50 °C
Storage temp range -25 to 70 °C
Length with 110 mm, short probe 390 mm
Length with 300 mm, long probe 580 mm
Storage Case 420 x 320 x 97 mm
Unpacked weight 0.5 kg
Packed weight 1.6 kg
Electrical noise immunity EN61326, class B emissions