Table of Contents
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Table of Contents
Related Manuals for Gas Data GFM400 Series
Summary of Contents for Gas Data GFM400 Series
- Page 1 GAS DATA Monitoring the Environment GFM400 Series Gas Analyser User Manual...
- Page 2 GFM400 Series User Manual User guide to the operation of the GFM400 series of portable environmental monitors. Issue Description: July 2006 GFM400 Series GFM400 Series User Manual...
- Page 3 GFMBatt Replaceable battery packs Brass temperature probe for GFM400 Series GFMTEMP T piece temperature probe for GFM400 Series GFMTEMP T 103 litre gas canister containing 5% CH4, 5% CO2 and 6 % O2 for GFMCAL checking calibration of GFM instruments...
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Page 4: Table Of Contents
Technical Specifications In the case Velocity - Flow Conversion charts Operation – GFM400 and GFM410 Understanding instruments for use in Safe use of the GFM400 Series flammable atmospheres Safe practice Hazardous areas classified by zones 26 Important safety related points Different gas types. -
Page 5: Introduction
The GFM400 Series has rechargeable Nickel Metal Hydride batteries giving around eight hours use between charges. A battery charger and mains unit is supplied with the instrument and a field replaceable battery pack is also available as an optional extra. -
Page 6: In The Case
Flow Range +30/-30 l/hour Flow Resolution 0.1 l/hour Borehole Pressure +1000/-1000 Pa (Typical) In the case The GFM400 series instruments are supplied in a fitted case containing the following items: GFM400 instrument Vane anemometer (optional) Spares kit gas pipe Battery charger... -
Page 7: Operation - Gfm400 And Gfm410
(up to 4), SP (static pressure or pipeline pressure) and gas velocity with an optional vane anemometer. Safe use of the GFM400 Series The GFM400 Series has been designed to operate in typical field environments where flammable gases may be present. The following points should be observed. - Page 8 U S E R M A N U A L ♦ Do not connect a GFM400 Series instrument to gas sources at greater than +500 mbar above atmospheric pressure. ♦ Do not operate the GFM400 in ambient temperatures outside the range of -10 to +40C ♦...
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Page 9: Front Panel Controls
10 minutes. NOTE: Keys 1, 2 and 3 are ‘soft’ keys and can have different functions as indicated on the LCD screen above them. GFM400 Series GFM400 Series User Manual... -
Page 10: Navigating The Instrument Screens - Gfm410
G F M 4 0 0 S E R I E S U S E R M A N U A L Navigating the instrument screens – GFM410 GFM400 Series GFM400 Series User Manual... -
Page 11: Connections
A series of moving chevrons at the the pipe to the gas tap to avoid gas top right-hand corner of the display screen leakage. GFM400 Series GFM400 Series User Manual... -
Page 12: Gas Pressure Measurement
AP = atmospheric pressure SP = static or gauge pressure: +ve = pressure, -ve = vacuum GFM400 Series GFM400 Series User Manual... -
Page 13: Gas Velocity Measurement
Gas velocity measurement IMPORTANT Schiltknect anemometers do not form part of the ATEX certification of the GFM series. Contact Gas Data for further advice on the safe use of these probes. Before attempting to measure gas velocity, make sure that the vane... -
Page 14: Summary Screen
Finally, press the Next key again to return to the opening screen. Auto Turn Off To help conserve battery life, the GFM400 Series features an auto power off facility. This ensures that the instrument will switch itself off after 10 minutes if no keys are pressed. -
Page 15: Operation - Gfm430
10 minutes. NOTE: Keys 1, 2 and 3 are ‘soft’ keys and can have different functions as indicated on the LCD screen above them. GFM400 Series GFM400 Series User Manual... -
Page 16: Navigating The Instrument Screens - Gfm430
G F M 4 0 0 S E R I E S U S E R M A N U A L Navigating the instrument screens – GFM430 GFM400 Series GFM400 Series User Manual... -
Page 17: Connections
Connect the flexible plastic gas pipe fitted with the water filter to the Sample In port on the top of the GFM430 instrument. The port will automatically lock the pipe in place, preventing it from being pulled off accidentally. GFM400 Series GFM400 Series User Manual... -
Page 18: Gas Pressure Measurement
Turn off leakage. the gas tap on the sample point and remove the gas pipe. AP = atmospheric pressure SP = static pressure; +ve = pressure, -ve = vacuum GFM400 Series GFM400 Series User Manual... -
Page 19: Gas Temperature Measurement
Carefully remove the vane anemometer from the gland on the gas pipe, pausing to be expelled at turn off the gas tap before removing it completely. Press ‘Next’ to go to next great force. screen. GFM400 Series GFM400 Series User Manual... -
Page 20: Low Flow (Borehole Flow) Measurement
10 minutes if no keys are pressed. The instrument will also switch off if the battery voltage is too low for it to operate. If this happens, recharge the batteries or fit a freshly charged battery – see Maintenance section. GFM400 Series GFM400 Series User Manual... -
Page 21: Maintenance
DO NOT CHARGE BATTERIES OR REMOVE BATTERY PACK IN POTENTIALLY EXPLOSIVE ATMOSPHERE. The GFM400 Series uses rechargeable Nickel Metal Hydride cells. If you need to dispose of a set, please take care to do so in line with local requirements. The expected life of the batteries is approximately 200 to 500 charge/discharge cycles. -
Page 22: Changing The Gas Filter
Always use the correct filter of the NEVER use the recommended type, which can be supplied by Gas Data Limited. If you use a non- GFM400 without recommended filter, this will invalidate the warranty on the instrument. -
Page 23: Calibration - All Models
These may produce hazards including the following: High pressure gas leakage Release of flammable gas mixtures Release of toxic gas mixtures Always follow the safety guide lines given by your test gas cylinder supplier. GFM400 Series GFM400 Series User Manual... -
Page 24: Procedure
To calibrate the gas channel to the 0.0% point, first press the ‘Down’ key to highlight ‘0.0% calibration’ option. Then press the ‘calibrate’ key. To calibrate the gas channel at the span gas point, first press the ‘Down’ key to highlight the span point calibration option. GFM400 Series GFM400 Series User Manual... -
Page 25: Auto Zero
Press the ‘auto zero’ key. This will start the automatic zero process. The screen will show a countdown during which the instrument is purged of all traces of gas before zeroing the gas channels. GFM400 Series GFM400 Series User Manual... -
Page 26: Technical Specifications
5% of fs 100 ppm 5% of fs 1000 ppm 5% of fs 100 ppm 5% of fs VOC (PID) 2000 ppm Contact Gas Data for details Other Optional Channels -10 to 100c 0.5c 0.1c Temperature (with external probe) GFM430 Flow Range... -
Page 27: Velocity - Flow Conversion Charts
Velocity - Flow conversion chart 160.00 140.00 120.00 100.00 d = 50mm 80.00 d = 100mm 60.00 40.00 20.00 0.00 Velocity (ms GFM400 Series GFM400 Series User Manual... - Page 28 Velocity - Flow conversion chart 6000.00 5000.00 4000.00 d = 50mm d = 100mm d = 150mm 3000.00 d = 180mm d = 220mm d = 250mm d = 300mm 2000.00 1000.00 0.00 Velocity (ms GFM400 Series GFM400 Series User Manual...
- Page 29 U S E R M A N U A L The formula for calculating the conversion is: f = 0.00283d v where f = flow in m = pipe inside diameter in mm = velocity in ms GFM400 Series GFM400 Series User Manual...
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Page 30: Understanding Instruments For Use In Flammable Atmospheres
Make certain that the area in which you intend to work can be described by one of the zones above. THE GFM400 SERIES IS SUITABLE FOR USE IN ZONE 1 AND ZONE 2. -
Page 31: Design And Construction Of Intrinsically Safe Instruments For Use In Flammable Atmospheres
S E R I E S U S E R M A N U A L THE GFM400 SERIES IS SUITABLE FOR USE IN FLAMMABLE ATMOSPHERES CAUSED BY THE PRESENCE OF GASES IN GROUP I, GROUP IIA AND GROUP IIB. -
Page 32: Testing And Certification
REQUIREMENTS OF CLASS T1. Testing and certification The GFM400 Series has been submitted for European Type Assessment. This assessment examines the design and construction criteria set out above and controls the manufacture. This process is defined in Annex II of the European ATEX Directive 94/9/EC. -
Page 33: Schiltknect Vane Anemometer
Anemometer NOTE: Schiltknecht anemometers do not form part of the ATEX certification of the GFM series. Contact Gas Data for further advice on the safe use of these probes. Operating Instructions These operating instructions are intended to ensure that the Schiltknecht measuring instrument and probe remain perfectly serviceable, guaranteeing fault-free and safe operation. -
Page 34: Response Time
General handling tips -Protect the probes against severe vibration -Do not kink the connector cable (risk of cable break) -Never allow hard objects to contact rotating impellers. GFM400 Series GFM400 Series User Manual... - Page 35 1 min. to relubricate the impeller bearings. If soapy water is used as a cleaning agent it is advisable to wash out the soap solution thoroughly with distilled water before lubrication with kerosene. GFM400 Series GFM400 Series User Manual...
- Page 36 Checking/factory inspections Depending on the application and the loads on the instrument we consider it highly advisable to have the instrument respectively the probe annually checked or inspected / repaired at our factory. GFM400 Series GFM400 Series User Manual...
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Page 37: Warranty Policy
Normal wear and tear, and parts damaged by abuse, misuse, negligence or accidents are specifically excluded from the warranty. GFM400 Series GFM400 Series User Manual...