Edwards AIM-S-NW25 Instruction Manual
Active inverted magnetron gauge
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Summary of Contents for Edwards AIM-S-NW25
- Page 1 D146-41-880 Issue J Instruction Manual Active Inverted Magnetron Gauge Description Item Number AIM-S-NW25 D146-41-000 AIM-SL-NW25 D146-44-000 AIM-X-NW25 D146-42-000 AIM-XL-NW25 D146-45-000 Original instructions...
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Page 2: Declaration Of Conformity
Declaration of Conformity Edwards Limited, Crawley Business Quarter, Manor Royal, Crawley, 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) AIM-S-NW25 D146-41-000 AIM-X-NW25... -
Page 3: Table Of Contents
Introduction ......................21 Spares ........................21 Accessories ....................... 21 For return of equipment, complete the HS Forms at the end of this manual. © Edwards Limited 2015. All rights reserved. Page i Edwards and the Edwards logo are trademarks of Edwards Limited. - Page 4 Pins on the AIM Gauge electrical connector socket ...............11 Pressure and voltage characteristics for nitrogen and dry air: AIM-S and AIM-SL Gauges ....14 Page ii © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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Page 5: Introduction
The AIM Gauge requires a 13.5 to 36 V d.c. power supply: it has a 2 to 10 V d.c. analogue output which is related to pressure. The AIM Gauge is compatible with all of the Edwards AGCs (Active Gauge Controllers) and with the appropriate versions of the Edwards AGDs (Active Gauge Displays). -
Page 6: Gas Dependency
D146-41-880 Issue J A gauge identification signal is available on the electrical connector: this signal is used by Edwards AGCs to identify which type of Active Gauge is connected. The AIM Gauge has a set-point facility; the set-point signal is an open-drain transistor (FET) output, which is on when the pressure measured by the Gauge is below a preset pressure. -
Page 7: General View Of The Aim Gauge (Showing The Nw25 Flange)
3. Body tube 4. Magnet housing 5. Cable connector plug 6. Set-point potentiometer (on end of item 1) 7. AIM Gauge connector socket © Edwards Limited 2015. All rights reserved. Page 3 Edwards and the Edwards logo are trademarks of Edwards Limited. - Page 8 D146-41-880 Issue J This page has been intentionally left blank. Page 4 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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Page 9: Technical Data
Pressure measurement range AIM-S/SL-NW25 1 x 10 to 1 x 10 mbar AIM-X/XL-NW25 1 x 10 to 1 x 10 mbar Pollution degree © Edwards Limited 2015. All rights reserved. Page 5 Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 10: Dimensions (Mm)
D146-41-880 Issue J Figure 2 - Dimensions (mm) 1. Clearance required for electrical cable Page 6 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 11: Electrical Data
The set-point output is switched off: For 0.5 seconds during gauge switch-on When pressure output signal voltage < 1.8 V. © Edwards Limited 2015. All rights reserved. Page 7 Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 12: Materials Exposed To Vacuum
D146-41-880 Issue J Materials exposed to vacuum Stainless steel (AISI 304 and 306). Fluoroelastomer. Soda lime glass. Page 8 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 13: Installation
The pins on the AIM Gauge electrical connection socket are used as shown in Table 1. The specification of the electrical supply, d.c. relay and back EMF suppression diode are given in Section © Edwards Limited 2015. All rights reserved. Page 9 Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 14: Schematic Diagram Of Typical Electrical Connections
4. Voltmeter (pressure signal) 5. D.C. relay (optional) 6. Back EMF suppression diode (optional) 7. Gauge enable switch 8. Voltmeter (set-point trip level) Page 10 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 15: Pins On The Aim Gauge Electrical Connector Socket
4.2). If you want to measure the gauge identification signal (which identifies the AIM Gauge), measure the resistance between pins 4 and 5. © Edwards Limited 2015. All rights reserved. Page 11 Edwards and the Edwards logo are trademarks of Edwards Limited. - Page 16 D146-41-880 Issue J This page has been intentionally left blank. Page 12 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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Page 17: Operation
Gauge, disconnect pin 7 from pin 2 (or from ground). Pressure measurement If you connected the AIM Gauge to a Edwards AGC controller or AGD display, the pressure measured by the AIM Gauge is shown on the display. If you connected the signal output of the AIM Gauge to a voltmeter, convert the measured voltage to the... -
Page 18: Set-Point
Set-point Note: The set-point is not used if you connect the AIM Gauge to a Edwards AGC Controller or AGD Display. To adjust the voltage at which the set-point output signal goes on, turn the set-point potentiometer, which is accessible through an access hole in the end-cap of the gauge: see Figure 1. -
Page 19: Maintenance
Refit the AIM Gauge to the vacuum system as described in Section 3.2 and refit the cable connector plug to the socket on the AIM Gauge (Figure 1, item 6). © Edwards Limited 2015. All rights reserved. Page 15 Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 20: Exploded View Of The Aim Gauge
1. Magnet housing 2. Collar 3. Anode assembly 4. ‘O’ ring 5. Body tube 6. Cathode plate 7. Cathode tube 8. Circlip Page 16 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 21: Replace The Electrode Assembly
7. Rinse the components in methanol to remove all of the water, then thoroughly dry the components. 8. Refit the components in the magnet housing as described in Steps 5 to 8 of Section 5.3. © Edwards Limited 2015. All rights reserved. Page 17 Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 22: Fault Finding
If the AIM Gauge does not operate correctly, ensure that the electrical connections are correct (refer to Section and ensure that your electrical supply is suitable for the AIM Gauge (refer to Section Page 18 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited. -
Page 23: Storage And Disposal
The Product and associated cables and ion gauges are within the scope of the European Directive on Waste Electrical and Electronic Equipment. Edwards offer European customers a recycling service for the Product/cables/associated gauge heads at the end of the product's life. Contact Edwards for advice on how to return the Product/cables/ion gauges for recycling. - Page 24 D146-41-880 Issue J This page has been intentionally left blank. Page 20 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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Page 25: 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 you order, please state for each part required: Model and Item Number of your equipment ... - Page 26 D146-41-880 Issue J This page has been intentionally left blank. Page 22 © Edwards Limited 2015. All rights reserved. Edwards and the Edwards logo are trademarks of Edwards Limited.
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