GasCheck IS handheld leak detector

ATEX approved, Intrinsically Safe gas leak detector

The only ATEX approved, Intrinsically Safe gas leak detector on the market, GasCheck IS has been specifically designed for the search and location of flammable gas leaks.

GasCheck IS detects and measures almost any known gas or gas mixture. Its advanced micro-thermal conductivity sensor responds rapidly to the smallest of gas leaks.

The GasCheck IS gas leak detector is conveniently calibrated against helium and is particularly sensitive to ammonia, argon, butane, hydrogen, SF6 and refrigerants. Its Intrinsic Safety proves an ideal tool for use in areas classified as zone zero flammable, and can safely detect flammable gases.

Robust, reliable and easy-to-use, GasCheck IS has an LCD display, LED indicator and audible alarm to clearly indicate the detected gas leak. When switched on GasCheck automatically zeros to the ambient air and is ready to detect immediately.

The GasCheck IS gas leak detector is available in two distinct versions; the 3000is and 5000is with varied capabilities.

Ion Science also offers the GasCheck G leak detector designed for the search and location of inflammable gases and the GasCheck Tesla leak detector for MRI scanner maintenance suitable for use within a high magnetic field.

Key Features

Best available technology

  • The only ATEX approved, Intrinsically Safe gas leak detector
  • Fast, accurate leak detection at highly sensitive levels
  • Detects almost any known gas or gas mixture
  • Particularly sensitive to ammonia, argon, butane, helium, hydrogen and SF6
  • Reliable, stable, repeatable readings

Minimise downtime

  • Simple, one handed operation
  • Large, clear LCD back lit display for easy viewing
  • Graphical icon menu
  • Conveniently calibrated against helium


  • Choice of readings in cc/sec, g/yr, mg/m3
  • Two variants available dependant on your requirements

Low cost operation

  • Inexpensive consumables and parts
  • 2 year warranty when instrument registered online


  • Accurate results in all environmental conditions
  • Meets ATEX, IECEx, UL and CSA standards

What’s included

The Intrinsically Safe GasCheck leak detector is available in two distinct variants. Choose the instrument that best meets your requirements.

GasCheck 3000IS
An easy-to-use gas leak detector for the rapid detection of gas leaks. The 3000is provides an ideal tool for use in areas classified as zone zero flammable and can safely detect flammable gases.

GasCheck 5000IS
Advanced software features of the GasCheck 5000is gas leak detector include data logging with a date and time stamp, a choice of readout units ppm or ml/sec, and an adjustable alarm level. The 5000is can also download its data logged results to a PC for analysis via an infrared link. The accompanying software allows for the creation of graphs from the downloaded data and printed reports.

For full details please contact Ion Science or an Ion Science Distributor for an up to date price list.

GasCheck 3000IS leak detector Kit (part no. GC5SABXS-X) /

GasCheck 5000IS leak detector Kit (part no. GC5SABXS-EXP):

  • Drilled Box Spanner
  • Standard Universal Case
  • Software CD
  • Silica Gel Sachets
  • Final Instrument
  • Battery Holder
  • Long Probe Assembly
  • Draper PZ1 Expert
  • Printed Quick Start Guide (we recommend downloading the Instrument Manual.)

Product downloads – Ion Science

Product downloads - Ion ScienceFor all downloadable resources please click here

Brochures, Manual, Quick Start Guides, Software etc.




DetectorMicro thermal conductivity detector (MTCD)
Sensor is poison resistant with over range protection
Intrinsically Safe Approvals (3000is & 5000is only)
ll2GExiaIICT4(-20°C≤Ta≤+60°C) Certificate Number Baseefa 02ATEX0093
OperationBattery Type: 4 x alkaline AA size, typically 40 hours life, IS 20 hours
Sensitivity (ml/sec)He2x10-5, CH4 1×10-4, R121x10-4, Ar2x10-4
Accuracy– 5%Displayed reading- One digit
ResponseT90 = 1 second rise and clear down
AlarmFlashing LED and 90 dBA (10cm) audible sounder
CalibrationCertified NAMAS/NIST standards
Data Logging*>1000 data points
Flow RateDirect USB 1.1 connection
CalibrationStandard calibration 100ppm isobutylene Custom calibration capability
AlarmFlashing LED and 95 dBA at 300mm (12”) audible sounder Selectable vibrating alarm
Pre-programmed TWA and STEL*
Pre-programmed with over 480 gases*
Flow Rate 2 ml/min or 2 cc/min (with outer probe removed)
Temperature Operating: -20 to +60 oC, -4 to 140 oF Storage: -20 to +70 oC, -4 to 158 oF Humidity: 0 to 99% RH (non-condensing)
ProtectionDesigned to IP65 (heavy rain)
C E 1180
EMC tested to EN61326-1:2006, EN50270:2006 & CFR 47:2008 Class A
Weight & DimensionsInstrument with probe: 390x60x49mm,15.5×2.3×1.9” Case:420x320x97mm,16.5×12.5×3.8” Instrument: 0.45 kg, 1 lb, Packed 1.6 kg, 3.5 lb

* Data logging available with the 5000is version only
EMC tested EN50082-1 July 98 NATO stock No 66/85/99/370/9519

Video Support

Video Support – Gascheck IS leak detector

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