© Edwards Limited 2013. All rights reserved.
Page 7
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INSTALLATION
D048-50-880 Issue E
3
INSTALLATION
3.1
Unpack and Inspect
Remove all packing materials and protective covers and check the AIGX .
If the AIGX is damaged, notify your supplier and the carrier in writing within three days; state the Item Number of
the gauge together with your order number and your supplier’s invoice number. Retain all packing materials for
inspection. Do not use the AIGX if it is damaged.
If the AIGX is not to be used immediately, replace the protective covers. Store the AIGX in suitable conditions as
described in
3.2
Fit the AIGX to the Vacuum System
The AIGX can be mounted in any orientation. To avoid the build-up of debris or condensable material in the body
tube of the AIGX (which will probably cause pressure measurement errors), we recommend that you install the AIGX
vertically with the flange facing down.
Use a copper gasket and screws to connect the DN16CF and DN40CF flanges of the AIGX to a similar flange on your
vacuumSystem. Use an ‘O’ ring /centring-ring or Co-Seal and metal clamp to connect the NW25 flange of the AIGX
to a similar flange on your vacuum system.
Note:
’O’ rings are not recommended for systems where UHV pressures are required.
3.3
Electrical Connections
3.3.1
Connect to Edwards Controller
Connect the AIGX to the Controller using a cable which is terminated in suitable connectors. Suitable cables are
available from Edwards. Refer to
Note:
Your Controller must have a version of software that is compatible with the AIGX. If the Controller display
shows ??? when the AIGX is plugged in, then an upgrade to the Controller software is required. Please
contact Edwards.
Note:
For cable lengths exceeding 10 m, cables with a larger conductor cross-section are required.
3.3.2
Connect to Your Own Supply and Control Equipment
Note:
Do not connect the electrical supply common (pin 2) to the signal common (pin 5). If you do, the AIGX
pressure output signal will be inaccurate.
A schematic diagram of the recommended electrical connections to the AIGX is shown in
.
WARNING
The AIGX must be connected to an earthed (grounded) vacuum system. For gauges with a NW25
flange, a conductive metallic clamping ring must be used.
WARNING
If the AIGX malfunctions, the AIGX pressure output may be incorrect. If such a failure could result
in damage to equipment or cause injury to people, you must install a suitable control system to
indicate the failure and, if necessary, to close down your process system.
