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Summary of Contents for Edwards GasCheck G3
- Page 1 D141-32-880 Issue A Original Instruction Manual GasCheck G3 Description Item Number GasCheck G3 D141-32-000...
- Page 2 West Sussex, RH10 9LW, UK declare under our sole responsibility, as manufacturer and person within the EU authorised to assemble the technical file, that the product(s) GasCheck G3 D141-32-000 to which this declaration relates is in conformity with the following standard(s) or other...
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Page 3: Table Of Contents
Spares and accessories ....................18 Calibration .......................18 Index ....................19 For return of equipment, complete the HS Forms at the end of this manual. © Edwards Limited 2009. All rights reserved. Page i Edwards and the Edwards logo are trademarks of Edwards Limited. - Page 4 Checklist of items in the storage case ................6 Using the GasCheck G3 functions ..................11 Calibration of the GasCheck G3 (concentration units) ............15 Calibration of the GasCheck G3 (cc/sec leak rate units) ............16 GasCheck G3 spares and accessories ................18 Page ii ©...
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Page 5: Introduction
GasCheck G3 as specified in this manual. Read this manual before you attempt to install, operate and maintain the Edwards GasCheck G3. Important safety information is highlighted as WARNING and CAUTION instructions; you must obey these instructions. The use of WARNINGS and CAUTIONS is defined below.. -
Page 6: Description
3. Battery case (on rear of unit) The GasCheck G3 has a convenient storage and carrying case, together with a spare battery holder, an additional long flexible probe (for leak detection in areas where access is restricted) and a box-spanner for probe changing. -
Page 7: Principal Of Operation
Principal of operation The GasCheck G3 contains a heated thermistor bead that transmits heat to a block of material that remains at a constant temperature. As air is drawn through the detector chamber, a constant amount of heat passes from the bead to the block. -
Page 8: Technical Data
Ingress ratings (minimum) IP20 Figure 2 - Dimensions (mm) * Length of short probe and nozzle. Length of long probe = 300 mm Page 4 © Edwards Limited 2009. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 9: Performance
Gases detected: The GasCheck G3 can detect any gas or vapour which has a different thermal conductivity to the ambient air in which it was zeroed. The larger the difference the greater the sensitivity, so that GasCheck G3 is not highly sensitive to the gases normally found in large concentrations in the ambient air, e.g. -
Page 10: Installation
Item Number and the Serial Number stamped on rear case of the GasCheck G3, together with your order number and your supplier's invoice number. Do not use the GasCheck G3 if any item is damaged. -
Page 11: Operation
Ensure that the batteries are fitted in accordance with the procedure detailed in Section 5.1. When the GasCheck G3 is switched on a number of screens are displayed before the unit is ready to detect leaks. Refer to Figure Figure 4 - Screens displayed during GasCheck G3 startup Displays the gas with which the GasCheck G3 has been calibrated with. -
Page 12: Gascheck G3 Running Screen
9. Leak rate Using the GasCheck G3 CAUTION Ensure that the ambient air is clean and free from any tracer gas when the GasCheck G3 is switched on. Failure to do so will result in inaccurate zero readings. CAUTION Do not touch the probe or brass sensor housing. Any changes in heat can result in significant changes in signal causing false readings. -
Page 13: Gascheck G3 Keyboard
Hold the GasCheck G3 at 45° to the object under test and draw the probe across the test area at a rate of approximately 25mm per second. When a leak is detected, the bar graph will fill, the reading will increase and the frequency of the LED flasher will increase. - Page 14 D141-32-880 Issue A Figure 7 - GasCheck G3 menu structure Page 10 © Edwards Limited 2009. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
- Page 15 Image Function Contrast adjusts the contrast of the GasCheck G3 LCD display. Significant variations in ambient temperature conditions may cause the display to appear too dark or feint. When selected a number appears indicating the contrast as a percentage; use the keys to adjust the display contrast to the desired level.
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Page 16: Probe Options
CAUTION Only use the box spanner supplied with the GasCheck G3 to tighten the probes. Other tools may result in over tightening of the nut and permanent damage to the instrument. - Page 17 Note: When detecting leaks with the long probe fitted, the response time of the GasCheck G3 is significantly increased. The speed at which the probe is drawn over the inspection surface should be reduced to around 10mm per second.
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Page 18: Maintenance
(B). Remove the old batteries and replace with 4 new ones (C). Reconnect the battery holder to the GasCheck G3 ensuring that the polarity is correct (D). The battery holder can then be placed back in the instrument. -
Page 19: Custom Calibration (Concentration Units)
Do not pressurise the sample bag during calibration. Significant errors in the calibration will result. Read the instructions below fully before calibrating the GasCheck G3. The following procedure should be followed if the GasCheck G3 has been set to concentrations (ppm or mg/m3). -
Page 20: Custom Calibration (Cc/Sec Leak Rate Units)
Custom calibration (cc/sec leak rate units) CAUTION Do not breathe on the probe. The GasCheck G3 can detect changes in humidity and carbon dioxide and significant errors in the calibration will result. Read the instructions below fully before calibrating the GasCheck G3. The following procedure should be followed if the GasCheck G3 has been set to cc/sec . -
Page 21: Storage And Disposal
The GasCheck G3 is within the scope of the European Directive on Waste Electrical and Electronic Equipment, 2002/ 96/EC. Edwards offer European customers a recycling service for the GasCheck G3 at the end of the product's life. Contact Edwards for advice on how to return the GasCheck G3 for recycling. -
Page 22: Spares And Accessories
The majority of these centres employ Service Engineers who have undergone comprehensive Edwards training courses. Order spare parts and accessories from the nearest Edwards company or distributor. When ordering, state for each part required: Serial number stamped on the rear of your GasCheck G3... -
Page 23: Index
D373-77-880 Issue A Index Applications ..........3 Calibration ........... 14 Calibration of the GasCheck G3 (cc/sec leak rate units) .............. 16 Custom calibration (concentration units) ... 15 GasCheck G3 keypad ........9 GasCheck G3 running screen ......8 GasCheck G3 spares and accessories ....18 Getting started ..........7... - Page 24 D373-77-880 Issue A This page has been intentionally left blank. Page 20 © Edwards Limited 2009. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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