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GMI Gasurveyor 3-500
  • GMI Gasurveyor 3-500
  • GMI Gasurveyor 3-500

GMI Gasurveyor 3-500 (Alkaline)

GMI authorised distributor

Includes: GMI Gasurveyor 3-500 Instrument, G500 Carry Case, 4mm Hex Driver, User Handbook, 1.5M Tygon Tubing, 35cm Solid End Probe, Probe Handle Assembly c/w Filters, Cotton Filters – 2 Boxes of 10, Sample Line Adaptor, Shipping List, LR20 Alkaline Battery x 4 (10278) *Dry Cell Instruments Only*.

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The GMI Gasurveyor 3-500 is a two button flammable gas leak location and purge instrument, designed to measure Lower Explosive Level (LEL) and Volume flammable gas. The instrument is designed to the latest standards and is certified for use in Hazardous Areas. The instrument contains electrochemical sensors with a life of 2 years.

The Gasurveyor 3-500 contains the following ranges: LEL, 0 to 100%, Volume gas, 0 to 100%. The LEL range indicates the explosibility of the flammable gas in the sample. This is displayed as a percentage of the lower explosive limit (LEL) of the gas. For methane 100% LEL corresponds to 5% Volume methane in Air.

The LCD display shows the current gas readings in both analogueand  digital  form  together  with  operational  and  statusinformation. The display is protected by a toughened glasscover. Backlighting is provided to enable the display tobe seen under low ambient light conditions.


Automatic range selection.
Simple 2-button operation, allowing user access to all features.
Automatic zero.
Gas/air purge mode.
Resolution to equivalent of 50 ppm.
Accurate, robust and extremely reliable instrument.
Integral pump with flow-path protected by water filter.
Audible and Visual alarm options.
Rugged carbon loaded polypropylene case, sealed to IP54 rating and suitable for outdoor use.
LCD with backlighting, which displays the current gas readings (in both digital and analogue format).

Instrument Type and Measuring Ranges
Gasurveyor 3-500
(flammable gas only)
0 to 100% LEL
0 to 100% Volume Gas.
Gasurveyor 6-500
(flammable gas and carbon monoxide)
0 to 100% LEL
0 to 100% Volume Gas
0 to 100O PPM Carbon Monoxide.
Gasurveyor 11-500
(flammable gas and oxygen)
0 to 100% LEL
0 to 100% Volume Gas
0 to 25% Oxygen.
GMI Gasurveyor 3-500 Series Specifications
Resolution LEL 0 to 10%
10% to 100%
VOL GAS 0 to 100% 1%
Oxygen 0 to 25% 0.1%
Carbon Monoxide 0 to 1000 PPM 1 PPM
Display LCD with automatic backlighting.
Humidity 0 - 95% R.H. non-condensing.
Temperature: -20° C to +50° C (-4° F to +122° F).
Alarms Highly visible flashing LED’s on display panel
Sounder in excess of 80dB(A), typically 85db(A) @ 1m.
Sampling Integral pump with flow fail sensor
Sample path is protected by a hydrophobic filter and automatic pump switch-off.
Battery 4 ‘D’ type batteries – alkaline or rechargeable battery pack.
Battery life 15 hours alkaline or 9 hours rechargeable.
Construction Moulded polypropylene case.
Rating IP54 (Dust protected and splashproof).
Response Time (typical) LEL Flammable: 3 secs (t50); 5 secs (t90)
Oxygen: 7 secs (t90)
Toxics: 15 secs (t90).
Certification ATEX II 2 G EEx ia d IIC T4 (Ta = -20oC to +50oC).
IECEx Ex ia d IIC T4 Gb (Ta = -20oC to +50oC).
UL Class I Groups A, B, C and D.
CSA Class I Groups ABCD C22.2 No. 152.
Dimensions 180 x 95 x 105 mm / 7.1 x 3.7 x 4.1 in.
Weight 1.7 kg / 3.75 lbs.
GMI Gasurveyor 3-500 warranty: Two-years.


GMI Gasurveyor 500 Datasheet

PDF Specifications of the GMI Gasurveyor 3-500, 6-500 & 11-500 Flammable Gas Leak Location Instruments.

Download (1.56M)

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GMI Gasurveyor 3-500 (Alkaline)
STD Accessory Pack Standard accessory pack. 42141
GS Accessory Pack Gas Survey accessory pack. 42151
Cotton Filters Box of 10 Cottons Filters STD/GS. 10077

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