Related Manuals for Edwards CP25
Summary of Contents for Edwards CP25
- Page 1 D145-37-880 Issue H Original Instruction Manual CP25 Penning Gauge Heads Item Description Number CP25K D145-37-000 CP25EK D145-41-000 CP25KP D145-36-000...
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Page 3: Table Of Contents
For return of equipment, complete the HS Forms at the end of this manual. Illustrations Figure Page CP25 Penning Gauge Head Exploded View ................8 Penning Module Recorder Output Graph ................9 © Edwards Limited 2008. All rights reserved. Page i Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 4: Associated Publications
D145-37-880 Issue H Associated publications Publication title Publication number Vacuum pump and vacuum system safety P300-20-000 Page ii © Edwards Limited 2008. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 5: Introduction
The units used throughout this manual conform to the SI international system of units of measurement. Description The Edwards CP25K range of cold cathode ionisation gauges all have the same gauge characteristics but differ in their electrical connectors. The gauge heads are of a robust construction that can be quickly and easily dismantled for cleaning. - Page 6 Note: The gauge head output is dependent on the composition of the system gas. The Edwards control units are calibrated for air/nitrogen. Page 2 © Edwards Limited 2008. All rights reserved.
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Page 7: Technical Data
Electrical data Operating voltage + 2300 V at 0.7 mA Materials exposed to vacuum Stainless steel AISI 304,347, 321,302 Soda-Lime-Barium glass Fluroelastomer © Edwards Limited 2008. All rights reserved. Page 3 Edwards and the Edwards logo are trademarks of Edwards Limited. - Page 8 D145-37-880 Issue H This page has been intentionally left blank. Page 4 © Edwards Limited 2008. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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Page 9: Installation
The gauge heads terminate in NW25 flanges. To connect to a branch tube terminating in a NW25 flange, a centring ring (with O-ring) and a clamp will be required. The Edwards product codes of these items are listed in Section... - Page 10 D145-37-880 Issue H This page has been intentionally left blank. Page 6 © Edwards Limited 2008. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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Page 11: Operation
Do not operate gauge when disconnected from the vacuum system as high voltages (3 kV) are present inside the gauge tube. WARNING The CP25 gauge incorporates magnets. Keep away from heart pacemakers, computers, credit cards and any other magnetically sensitive devices. CAUTION... -
Page 12: Gauge Head Structure
Nut retaining screws Earth cap assembly Anode assembly O-ring Recorder output A graph showing the pressure dependence of the recorder output of the Edwards 1000/1700/2000 series Penning module is shown in Figure Page 8 © Edwards Limited 2008. All rights reserved. -
Page 13: Penning Module Recorder Output Graph
3.0 x 10 0.078 2.0 x 10 0.051 1.0 x 10 0.027 5.0 x 10 0.012 0.0 x 10 0.000 1.00E-07 © Edwards Limited 2008. All rights reserved. Page 9 Edwards and the Edwards logo are trademarks of Edwards Limited. - Page 14 D145-37-880 Issue H This page has been intentionally left blank. Page 10 © Edwards Limited 2008. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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Page 15: Maintenance
1. Hold the gauge head body upright, insert the first baffle cup, base first. 2. Insert the second cathode cup, base first. 3. Insert the third cathode cup, open end first. © Edwards Limited 2008. All rights reserved. Page 11 Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 16: Fault Location
Meter records full scale at Short circuit Check for short circuit between the Anode and all pressures. Cathode and between the connectors on the cable. Page 12 © Edwards Limited 2008. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 17: Storage And Disposal
The instrument and associated cables are within the scope of the European Directive on Waste Electrical and Electronic Equipment, 2002/96/EC. From August 2005, Edwards will offer European customers a recycling service for the instrument/cables at the end of the product’s life. Contact Edwards for advice on how to return the instrument/cables for recycling. - Page 18 D145-37-880 Issue H This page has been intentionally left blank. Page 14 © Edwards Limited 2008. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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Page 19: Spares And Accessories
The majority of these centres employ Service Engineers who have undergone comprehensive Edwards training courses. Order spare parts and accessories from your nearest Edwards company or distributor. When ordering, please state for each part required: Model and Item Number of your equipment... - Page 20 D145-37-880 Issue H This page has been intentionally left blank. Page 16 © Edwards Limited 2008. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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