Detection, Protection, Innovation

PPM Gasurveyor 500

Package includes:

  • PPM Gasurveyor 500 Instrument (42500 or 42500R)
  • Carry Case (12580)
  • 4mm Hex Driver (12451)
  • 30mm Harness Assembly (12370_2)
  • Probe Handle Assembly (13561)
  • Probe Adaptor Assembly (13562)
  • Bellows Probe (13563)
  • Swan Neck Probe c/w Shroud (13655)
  • Cotton Filters – 2 Boxes of 10 (10077)
  • User Handbook (42142)
  • Shipping List (42697)
  • LR20 Alkaline Battery x 4 (10278)  *Dry Cell Instruments Only*
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The PPM Gasurveyor 500 compliments the Gascoseeker 2-500 with a similar performance, measuring % LEL and % volume flammable hydrocarbons, but with the addition of ppm ranges for all aspects of leak detection. The high sensitivity parts per million (ppm) range is enhanced by the ppm search range with higher sensitivity and faster response.

In accordance with the Gascoseeker 2-500, the PPM Gasurveyor 500 has the following additional features:

  • Automated zero during start-up
  • Manually selectable ppm and search ranges

The ppm Gasurveyor-500 is easy to use, with operator training being conducted quickly and it is also fully compatible with our range of calibration software and equipment.

For more info, call our sales team on +44 (0)141 302 8302.

Key Features

  • Fast response search mode to locate ppm level leaks very quickly
  • Automatic hydrocarbon range selection for LEL and Vol %
  • Manual selection of ppm and search mode
  • Simple 2-button operation, allowing user access to all features
  • Automatic zero
  • Audio/visual Geiger function (ticker) for leak detection
  • Hydrocarbon resolution to equivalent of 5 ppm methane
  • Accurate, robust and extremely reliable
  • Integral pump with flow-path protected by water filter
  • Rugged carbon loaded polypropylene case, sealed to IP54 rating and suitable for outdoor use


  • Leak detection
  • Bar hole survey
  • Gas escape detection
  • Hot work permitting
  • Leak source detection

Technical Specification

Measuring Ranges

LEL  0 – 10%
LEL 10 – 100%
PPM 0 – 1000ppm
VOL 0 – 100%


Ex Certified UL_Logo_50x50CSA (US and Canada) CertifiedCE Certified

IEC Ex ia d IIC T4 Gb
ATEX Ex II 2G Eex ia d IIC T4
UL913 Class 1 Div 1 Groups ABCD
CSA Class 1 Groups ABCD T4

Physical Properties

180 (H) x 95 (W) x 105 (D) mm
7.1 (H) x3.7 (W) x 4.1 (D) in

1.2 kg (2.5 lbs with alkaline batteries)


0-95% RH non-condensing

-20oC to + 50oC (-4oF to + 122oF)


Sampling System

Integral pump with flow fail sensor
Sample path protected by hydrophobic filter and auto pump switch off


Moulded polypropylene case

IP Rating



LCD containing:
Analogue display scaled 0-10, 0-100, 0-1000, 0-10000
4-digit digital display
3-character range indication
Operational flags

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