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Table of Contents
Summary of Contents for Gas Data GFM600
- Page 1 GAS DATA Monitoring the Environment GFM600 Velocity Monitor User Manual...
- Page 2 D O C U M E N T C O N T R O L S H E E T GFM600 Velocity Monitor User Manual Issue A, Revision 0 Issue Date: April 9, 2007 Copy No: 1 Copy Holder: Archive User guide to the operation of the GFM600 portable Velocity monitor. Issue Description: New manual - February 2007.
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Page 3: Table Of Contents
T able of Contents Introduction General handling tips Warranty policy Conditions and exclusions Safe use of the GFM600 Velocity Monitor Safe practice Important safety related points In the case Operation Connections Gas velocity measurement Auto Turn Off Maintenance Low Battery warning... -
Page 4: Introduction
During this period, Gas Data Limited will repair or replace defective parts on an exchange basis. Freight charged to and from the Gas Data factory or authorised service centre will be paid by the end user. -
Page 5: Safe Use Of The Gfm600 Velocity Monitor
G F M 6 0 0 U S E R M A N U A L Safe use of the GFM600 Velocity Monitor The Gas Data GFM600 Velocity Monitor has been designed to operate in typical field environments where flammable gases may be present. The following points should be observed. -
Page 6: In The Case
G F M 6 0 0 U S E R M A N U A L In the case The GFM600 instruments are supplied in a fitted case containing the following items: GFM600 instrument Vane anemometer Battery charger GFM600 - 3 -... -
Page 7: Operation
10 minutes. The instrument backlight can be switched on at anytime during the sampling process. Connections Communications/anemometer port Battery charger socket GFM600 - 4 - GFM600 Velocity Monitor User Manual... -
Page 8: Gas Velocity Measurement
IMPORTANT Schiltknect anemometers do not form part of the ATEX certification of the Gas Data 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 anemometer is long enough to reach the centre of the pipe through which the gas is flowing. -
Page 9: Auto Turn Off
This completes the measurement. Auto Turn Off To help conserve battery life, the GFM600 instrument features an auto power off facility. This ensures that the instrument will switch itself off after 10 minutes if no keys are pressed. -
Page 10: Maintenance
The batteries will be fully charged in about three hours. Batteries The GFM600 Series uses rechargeable Nickel Metal Hydride cells. To change the batteries, remove the two screws on the rear of the instrument, then lift the battery cover and remove the battery pack from the recess. -
Page 11: Factory Calibration
Factory calibration The instrument is not supplied with a calibration certificate. The instrument is supplied with a functional check sheet. It is recommended that the instrument be returned to Gas Data Limited once every five years for a general inspection. GFM600... -
Page 12: Technical Specification
0-40 m/s Vane anemometer 12mm diameter x 340mm long. Size 200mm x 90mm x 50mm approx Weight 400g (approx.) Battery type Rechargeable Nickel metal hydride Battery run time >18 hours (backlight off) GFM600 - 9 - GFM600 Velocity Monitor User Manual... -
Page 13: 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 GFM600 - 10 - GFM600 Velocity Monitor User Manual... - Page 14 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 GFM600 - 11 - GFM600 Velocity Monitor User Manual...
- Page 15 G F M 6 0 0 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 GFM600 - 12 - GFM600 Velocity Monitor User Manual...
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Page 16: 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 GFM600 SERIES IS SUITABLE FOR USE IN ZONE 1 AND ZONE 2. -
Page 17: Design And Construction Of Intrinsically Safe Instruments For Use In Flammable Atmospheres
Petrol vapour Methane Least easily ignited THE GFM600 SERIES IS SUITABLE FOR USE IN FLAMMABLE ATMOSPHERES CAUSED BY THE PRESENCE OF GASES IN GROUP I, GROUP IIA AND GROUP IIB. Design and construction of intrinsically safe instruments for use in flammable atmospheres. -
Page 18: Testing And Certification
REQUIREMENTS OF CLASS T1. Testing and certification The GFM600 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 19: Schiltknect Vane Anemometer
Anemometer NOTE: Schiltknecht anemometers do not form part of the ATEX certification of the Gas Data 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 20: Response Time
-Do not kink the connector cable (risk of cable break) -Never allow hard objects to contact rotating impellers. -Always carry out probe cleaning according to the cleaning instructions -Never immerse probes in solvent GFM600 - 17 - GFM600 Velocity Monitor User Manual... -
Page 21: Cleaning Instructions
2) After cleaning the probe, rub it dry externally with a clean, dry, fluff-free cloth. 3) Leave the top part of the impeller to dry for ca. 30 minutes. GFM600 - 18 - GFM600 Velocity Monitor User Manual... - Page 22 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. GFM600 - 19 - GFM600 Velocity Monitor User Manual...