These are some of the most common questions our customers ask us. Click on each question to reveal the answer.
Please note, gas types will vary depending on instrument type. Please refer to the table below.
|
Instrument Type
|
Gases Measured
|
| 2 Button 500 Series |
|
| Gasurveyor 3-500 |
LEL/VOL |
| Gasurveyor 6-500 |
LEL/VOL/CO |
| Gasurveyor 6B-500 |
PPM/LEL/VOL/CO |
| Gasurveyor 11-500 |
LEL/VOL/O2 |
| 4 Button 500 Series |
|
| Gasurveyor 511 |
LEL/VOL |
| Gasurveyor 512 |
PPM/LEL/VOL |
| Gasurveyor 521 |
LEL/VOL/O2 |
| Gasurveyor 522 |
PPM/LEL/VOL/O2 |
| Gasurveyor 523 |
LEL/VOL/H2S |
| Gasurveyor 524 |
PPM/LEL/VOL/H2S |
| Gasurveyor 525 |
LEL/VOL/CO |
| Gasurveyor 526 |
PPM/LEL/VOL/CO |
| Gasurveyor 531 |
LEL/VOL/O2/H2S |
| Gasurveyor 532 |
PPM/LEL/VOL/O2/H2S |
| Gasurveyor 533 |
LEL/VOL/O2/CO |
| Gasurveyor 534 |
PPM/LEL/VOL/O2/CO |
| Gasurveyor 536 |
PPM/LEL/VOL/CO/H2S |
| Gasurveyor 541 |
LEL/VOL/O2/CO/H2S |
| Gasurveyor 542 |
PPM/LEL/VOL/O2/CO/H2S |
|
|
| Leaksurveyor |
PPM/LEL/VOL |
|
|
| First Reponder |
PPM/LEL/VOL/CO |
|
|
| PPM Gasurveyor 500 |
SEARCH/PPM/LEL/VOL |
|
|
| Gascoseeker 2-500 |
LEL/VOL |
|
|
| GT Series |
|
| GT40 |
PPM/LEL/GAS/CO |
| GT41 |
PPM/LEL/GAS/O2 |
| GT42 |
PPM/LEL/GAS/CO/O2 |
| GT43 |
PPM/LEL/GAS/CO/O2/H2S |
| GT44 |
PPM/LEL/GAS |
|
|
| Shipsurveyor |
|
| Shipsurveyor 1 |
LEL/VOL |
| Shipsurveyor 2 |
LEL/VOL/O2 |
| Shipsurveyor 3 |
LEL/VOL/O2/H2S |
| Shipsurveyor 4 |
LEL/VOL/O2/CO2 |
| Shipsurveyor 5 |
LEL/VOL/O2/CO2/CO |
| Shipsurveyor 6 |
LEL/VOL/O2/H2S/CO |
| Shipsurveyor 7 |
O2/CO2 |
Please note we are still working on this table at the moment.
|
Instrument Type
|
Flammable
|
O2
|
H2S
|
CO
|
CO2 (VOL)
|
|
ppm
|
0-100% LEL
|
0-10% VOL
|
0-100% VOL
|
(CO2 Free)
|
50ppm
|
500pm
|
1%
|
3%
|
5%
|
100%
|
|
GT 41; GT 44
|
99125 Methane
|
99159 Methane
|
N/A
|
99129 Methane
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
GT 40; GT 42
|
N/A
|
99145
|
|
GT43
|
99143
|
99145
|
|
Gasurveyor 411/421
|
N/A
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 511/521
|
|
Gasurveyor 3-500/11-500
|
|
Gascoseeker 2-500
|
|
Oxygas 500
|
|
Gascoseeker Acclaim
|
|
Shipsurveyor 1
|
N/A
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
|
N/A
|
99129 Methane
99135 Propane
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Shipsurveyor 2
|
N/A
|
N/A
|
N/A
|
|
Shipsurveyor 3
|
99143
|
N/A
|
N/A
|
|
Shipsurveyor 4
|
N/A
|
N/A
|
99164
|
|
Shipsurveyor 5
|
N/A
|
99145
|
99164
|
|
Shipsurveyor 6
|
99143
|
99145
|
N/A
|
|
Shipsurveyor 7
|
N/A
|
N/A
|
N/A
|
N/A
|
991694
|
|
Gasurveyor 412/422
|
99125 Methane
99132 Propane
99122 Butane
99140 Pentane
99124 Hydrogen
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 512/522
|
|
ppm Gasurveyor 500
|
|
Oxygas P-500
|
|
Gasurveyor 423/431
|
N/A
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
N/A
|
99143
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 523/531
|
|
Gasurveyor 424/432
|
99125 Methane
99132 Propane
99122 Butane
99140 Pentane
99124 Hydrogen
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
N/A
|
99143
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 524/532
|
|
Gasurveyor 425/433
|
N/A
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
N/A
|
N/A
|
99145
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 525/533
|
|
Gasurveyor 6-500/6B-500
|
|
Gasurveyor 426/434
|
99125 Methane
99132 Propane
99122 Butane
99140 Pentane
99124 Hydrogen
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
N/A
|
N/A
|
99145
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 526/534
|
|
First Responder
|
|
Leaksurveyor
|
99127 Methane
|
99159 Methane
|
N/A
|
99129 Methane
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 441/541
|
N/A
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
N/A
|
99143
|
99145
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 442/542
|
99125 Methane
99132 Propane
99122 Butane
99140 Pentane
99124 Hydrogen
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
N/A
|
99143
|
99145
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 444
|
N/A
|
99122 Butane
99137 Butane
|
N/A
|
N/A
|
N/A
|
99143
|
N/A
|
N/A
|
N/A
|
N/A
|
N/A
|
|
Gasurveyor 461
|
N/A
|
99133 Propane
|
99133
|
99135 Propane
|
N/A
|
99143
|
N/A
|
N/A
|
N/A
|
N/A
|
|
|
Gasurveyor 487
|
N/A
|
99159 Methane
99133 Propane
99137 Butane
99141 Pentane
99126 Hydrogen
|
N/A
|
99129 Methane
99135 Propane
|
99157
|
N/A
|
99145
|
99161
|
99163
|
N/A
|
N/A
|
|
Gasurveyor 491
|
Calibrated for Ethanol - Return instrument to GMI for Calibration
|
99157
|
99143
|
N/A
|
99161
|
99163
|
N/A
|
N/A
|
|
Calibration Gas
|
Measurement
|
T.ex
|
Personal Surveyor 200 (PS200)
|
V!SA
|
PID V!SA
|
V!SA 2
|
|
FLAMMABLE
|
0-100% LEL
|
N/A
|
|
|
|
|
Hydrogen Sulphide (H2S)
|
50ppm
|
99143
|
99143
|
99143
|
99143
|
|
Carbon Monoxide (CO)
|
100pm
|
99167
|
99167
|
99167
|
99167
|
|
Sulphur Dioxide (SO2)
|
20ppm
|
N/A
|
N/A
|
99147
|
N/A
|
|
Nitrogen Dioxide (NO2)
|
20ppm
|
N/A
|
N/A
|
99149
|
N/A
|
|
Chlorine (CL2)
|
10ppm
|
N/A
|
N/A
|
99151
|
N/A
|
|
Ammonia (NH3)
|
50ppm
|
N/A
|
N/A
|
99153
|
N/A
|
|
Nitric Oxide (NO)
|
100pm
|
N/A
|
N/A
|
99155
|
N/A
|
|
Carbon Dioxide (CO2)
|
3% VOL
|
N/A
|
N/A
|
99163
|
N/A
|
|
Volatile Organic Compound
(PH3 VOC)
|
50ppm
|
N/A
|
N/A
|
N/A
|
* 99176
|
N/A
|
Pellistors and Infra-Red technology is used to detect flammable gases.
Electrochemical Cell technology is used to detect toxic gases and oxygen.
|
Product
|
Battery Type
|
Part Number
|
|
V!SA
|
Alkaline pack
|
66210 / 66538
|
|
PS200 Series
|
N/A
|
-
|
|
Gasurveyor 500 Series
|
Alkaline
|
-
|
|
Rechargeable NiMH
|
42114
|
|
GT Series
|
Alkaline
|
67292
|
|
Dry cell batteries are supplied as standard. To comply with certification requirements please select the appropriate rechargeable batteries as marked below.
|
|
Rechargeable (UL Certified)
|
67293
|
|
Panasonic Rechareable (ATEX Certified)
|
67294
|
|
Acclaim
|
Any D-size batteries
|
-
|
|
Shipsurveyor
|
Alkaline (LR20 'D' size)
|
Duracell Procell, Duracell Plus, Energizer Ultra, Energizer Industrial
|
|
Rechargeable (LR20 'D' size)
|
Uniross 2600mAh NiMH
|
Battery life is tested at room temperature normally. However, at very low temperatures, the battery life drops. Batteries stored at high temperatures may lose their charge quicker than at room temperature.
Periodically (dependent on application) or when damaged / dirty / missing.
Periodically (dependent on application) or when damaged / dirty / missing.
For UK repairs / calibrations, please send your instrument to our service centre at Milton Keynes:
Gas Measurement Instruments Ltd
Service Centre
25 Cochran Close
Crownhill
Milton Keynes
England
MK8 0AJ
For worldwide repairs / calibrations, please contact your territory manager.
The Balance Flow Regulator (Part No: 99116) is for use with pumped instruments, e.g. Gasurveyors, and should not be used with diffusion instruments, e.g. Personal Surveyors or remote Sensing Heads.
The Direct Flow Regulator (Part No: 99117) is for use with diffusion instruments, e.g. Personal Surveyors, V!SA* or remote Sensing Heads, and should not be used with pumped instruments, e.g. Gasurveyors.
* Note: Make sure that the V!SA pump, if fitted, is switched off before and during the application of calibration gas.
A pumped instrument includes an internal sampling pump and will draw in a sample automatically when switched on.
A diffusion instrument does not have a pump. Gas samples are diffused in naturally or alternatively drawn in manually using sample line and aspirator bulb.
We recommend that instruments are calibrated at least every 12 months. Please contact us to arrange re-calibration of your instrument.
This indicates a problem with the instrument's flow due to the sample path being blocked, water ingress, a blocked filter or pump failure. This may also indicate a fault with the instrument's flow fail detection circuitry. The instrument will alarm and the pump will switch off. The sample path should be checked and 'Switch One' pressed to clear sample fault and re-start the pump.
This indicates that there may been a zero shift due to the presences of gas. Switch off the instrument and switch on again in fresh air.
This indicates that the zero is out with its calibration limits. Switch the instrument off and then on again in fresh air. If the fault does not clear, return the instrument for servicing. Please contact us to arrange servicing.
This means that the instrument has a Confined Space Mode. In this mode, the pump runs continuously, ranges are monitored continuously and the alarms are always active.
This means that the instrument has a Combustible Gas Indicator mode. In this mode, the pump runs while sampling, ranges are user selectable and alarms are disabled.
|
Product
|
IP Rating
|
|
V!SA
|
Instrument sealed to IP65. Sensing elements, sample inlet and charging socket sealed to IP54
|
|
PS200 Series
|
IP67 (dust-tight and waterproof to 1m)
|
|
Gasurveyor 500 Series
|
IP54
|
|
GT Series
|
|
Acclaim
|
|
Shipsurveyor
|
|
T.ex
|
|
Leaksurveyor
|
|
First Responder
|
|
Gascoseeker 2-500
|
|
PPM Gasurveyor 500
|
