GMI Leaksurveyor Fast Response Gas Detector

Code: 44512L
  • PPM, LEL and Volume flammable gas ranges
  • Simple button operation
  • Rechargeable or alkaline batteries

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The GMI Leaksurveyor combines quality, ruggedness and advanced GMI Technology in a user friendly, portable gas detector.

The integral fast response and high-sensitivity semiconductor sensor enable leakage surveys and distribution leaks to be quickly found.


  • Integral Semiconductor Sensor (Range 0-10,000 ppm), providing fast response leak detection.
  • PPM, LEL and Volume flammable gas ranges for leak detection, general safety monitoring and barholing.
  • Audible and visual ‘Geiger’ alarm indication on ppm range.
  • Integral pump with pressure sensor for flow fail detection with sample path protected by hydrophobic filter.
  • Rugged polypropylene case, sealed to IP54 rating, suitable for outdoor use.
  • Compatible with the full range of GMI accessories.
  • Approvals ATEX, IECEx & China Ex

Technical Specification

Measuring Ranges: 0 to 10,000 ppm (Semiconductor Sensor)
0 to 100% LEL (Catalytic Sensor)
0 to 100% Volume Gas (Thermal Conductivity Sensor)
Resolution ppm: 0 to 499 1 ppm
500 to 10000 10 ppm
Resolution LEL: 0 to 10% 0.1%
10% to 100% 1%
Resolution Vol Gas: 0 to 100% 1%
Dimensions: 180 x 95 x 105 mm / 7.1 x 3.7 x 4.1in.
Weight: 1.7 kg / 3.75 lbs
Display: LCD with automatic backlighting
Humidity: 0-100% R.H. non-condensing
Temperature: -20oC to +50oC (-4oF to +122oF)
Alarms: Highly visible flashing LED.
Sounder: In excess of 80dB(A), typically 85db(A) @ 1m.
42800Extended Survey Probe Assembly (GS)
Sampling: Integral pump with semiconductor pressure sensor for flow fail sensor. Sample path is protected by a hydrophobic filter.
Battery: 4 ‘D’ size Alkaline Cells or Rechargeable Battery Pack
Battery Life: 21 hours Alkaline or 18 hours Rechargeable
Construction: Moulded polypropylene case
Rating: IP54 (Dust protected and splashproof)
Sensor Life: 5 Years
Certification: ATEX Ex ia d IIB T3 (Ta = -20oC to +50oC)
IECEx Ex d ia IIB T3 (-20oC ≤ Tamb ≤ +50oC)
UL 913 Class I Groups C and D

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Title Size
Leaksurveyor Datasheet 348 KB

Additional information

Weight 0.190 kg

Ordering Information

44512L Leaksurveyor PPM, LEL, Volume Alkaline
44512LR Leaksurveyor PPM, LEL, Volume Rechargeable
Accessory Packs
42141 Standard Accessory Pack – Includes items marked below as STD
42151 Gas Survey Accessory Pack – Includes items marked below as GS
Case Accessories
13405 Standard Carrying Case STD
12580 Gas Survey Carrying Case GS
12481 Standard Probe Handle c/w Filters STD
10077 Cotton Filters (Box / 10) STD / GS
13427 35 cm probe open end STD
42764 Extended PPM Probe Handle Assy GS
42765 PPM Probe Filter & Tubing Assy GS
42648 Probe Adaptor (Mid) PPM GS
13563 Bellows Survey Probe (B) GS
13655 Swan Neck Probe c/w Shroud GS
42605 Filter holder c/w filters GS
Other Accessories
42183 Water Filter Assembly c/w Filters
12358 Hydrophobic Filter (for 12481 or 42183)
75096 Dust Filter (for 42184)
13427 35cm Plastic Probe Open End
13844 Standard Charger (c/w universal PSU)
Spare Parts
42207 User Handbook
42208 Quick Operation Guide
12451 Hex Driver
12370 Carrying Harness
12712 Clear Sample Line x 1m
42078 Pump Assembly **
42234S Combustion Chamber Assembly **
42364 EPROM (Serial No. Required) **
42202 Case Assembly Centre Section **
42174 Top Cover Assembly ** (ordered with Buzzer 42086)
42180 Rechargeable Battery Pack **
42175 Battery Cover Assembly Dry Cell **
42251 Main PCB Assembly **
42227 Main Cable Assembly ** (Main PCB to Cell Block)
42119 PSU PCB Assembly **
12670 250mA Fuse (PSU Board) **
42191 Semi-conductor sensor * / **
42205 Toxic PCB * / **

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