Edwards IG40 BA User manual
edwardsvacuum.com
IG40 BA AND EX LOW PRESSURE
PASSIVE GAUGES
INSTRUCTION MANUAL
Publication number: D0300030001EN
Issue: B
Original Instructions
Copyright notice
© Edwards Limited 2021. All rights reserved.
Trademark credits
Edwards and the Edwards logo are trademarks of Edwards Limited, Innovation Drive, Burgess
Hill, West Sussex RH15 9TW.
Disclaimer
The content of this manual may change from time to time without notice. We accept no liability
for any errors that may appear in this manual nor do we make any expressed or implied warran-
ties regarding the content. As far as practical we have ensured that the products have been de-
signed and constructed to be safe and without risks when properly installed and used in accord-
ance with their operating instructions.
We accept no liability for loss of profit, loss of market or any other indirect or consequential loss
whatso-ever.
Product warranty and limit of liability are dealt with in our standard terms and conditions of sale
or negotiated contract under which this document is supplied.
You must use this product as described in this manual. Read the manual before you install, op-
erate, or maintain the product.
D0300030001EN - Copyright notice
D0300030001EN - Contents
Page i
Contents
Safety 1
Symbols used ..................................................................................................................... 1
Symbols for residual risks ............................................................................................ 1
Personnel qualifications .................................................................................................... 1
General safety instructions ................................................................................................ 1
Responsibility and warranty .............................................................................................. 1
Description 3
Product identification ........................................................................................................ 3
Validity ............................................................................................................................... 3
Intended use ...................................................................................................................... 3
Technical data 4
General gauge head data ................................................................................................... 4
Dimensions ........................................................................................................................ 5
Installation 6
Supplied equipment .......................................................................................................... 6
Assembly ............................................................................................................................ 6
Connecting the bakeable gauge head cable. ................................................................ 7
Preparing the gauge head for the connection of the bakeable gauge head cable ....... 7
Connecting the bakeable gauge head cable to the flange on the gauge head ............ 8
Fitting the gauge head including the bakeable gauge head cable ............................... 9
Operation 10
Calibration ....................................................................................................................... 10
Operation ......................................................................................................................... 10
Maintenance 11
Exchanging the Cathode .................................................................................................. 11
Preparation ................................................................................................................. 11
Spares and accessories 13
Spares .............................................................................................................................. 13
Accessories ................................................................................................................. 13
Storage 14
Return the equipment or components for service 15
Disposal 16
Separating the components ............................................................................................ 16
Contaminated components ........................................................................................ 16
2021-AVG-GCN-0002
D0300030001EN - Contents
Page ii
Other components ..................................................................................................... 16
Other Disposal Information ........................................................................................ 16
List of Figures
Dimensions ................................................................................................................ 5
Gauge head connection ............................................................................................. 8
View onto the gauge head ........................................................................................ 9
View onto the gauge head ...................................................................................... 12
List of Tables
General gauge head data .......................................................................................... 4
Bakeable gauge head cable ....................................................................................... 5
Operating characteristics when used with control unit PGC202 ............................... 5
Gauges ....................................................................................................................... 6
Bakeable gauge head cable ....................................................................................... 6
Spare parts .............................................................................................................. 13
Gauge head cables .................................................................................................. 13
D0300030001EN - Safety
Page 1
Safety
Symbols used
Symbols for residual risks
Personnel qualifications
All work described in this document may only be carried out by persons who have suitable
technical training and the necessary experience or who have been instructed.
General safety instructions
Adhere to the applicable regulations and take the necessary precautions for the
process media used.
Consider possible reactions with the product materials.
Adhere to the applicable regulations and take the necessary precautions for all work
you are going to do and consider the safety instructions in this document.
Before beginning to work, find out whether any vacuum components are
contaminated. Adhere to the relevant regulations and take the necessary precautions
when handling contaminated parts.
Communicate the safety instructions to all other users.
Responsibility and warranty
Edwards will not assume any responsibility or warranty in cases where the operator or third
persons:
Do not observe the information given in this document.
Do not use the product as intended.
Modify the product in any way (conversions, repair work, etc).
WARNING:
Warnings are given where failure to observe the instruction could result in injury or death
to people.
CAUTION:
Cautions are given where failure to observe the instruction could result in damage to the
equipment, associated equipment and process.
D0300030001EN - Safety
Page 2
Operate the product with accessories not listed in the corresponding product
documentation.
Subject to technical alterations without prior notice. The figures are not binding.
D0300030001EN - Description
Page 3
Description
The IG40 BA is a Bayard-Alpert measurement system and the IG40 EX is an extractor
measurement system. Operation of these sensors is based on the hot cathode ionisation
effect.
The temperature resistant gauge head cable must not be exposed to a temperature
exceeding 200 °C maximum (250 °C at the flange of the sensor).
Product identification
A nameplate is located on the protection cover. When communicating with Edwards, stating
the information on the nameplate is necessary.
Validity
This document applies to products with part numbers
Intended use
The IG40 BA and EX may only be used for the measurements of total pressures in vacuum
systems and only when connected to a PGC202 vacuum gauge controller instrument.
Product Description Item number
IG40 BA DN40CF Bayard-Alpert Ion Gauge D03000300
IG40 EX DN40CF Extractor Ion Gauge D03000310
IG40 BA / EX cable 5 m Bakeable D03000301
IG40 BA / EX cable 10 m Bakeable D03000302
IG40 BA / EX cable 50 m Bakeable D03000303
D0300030001EN - Technical data
Page 4
Technical data
General gauge head data
Table 1 General gauge head data
Description IG40 BA IG40 EX
Materials
Lead-in pins NiFe
Insulator Al203 ceramic
Pin sealing plate NiFe
Flange Stainless steel
Cathode Iridium with yttrium oxide coating
Anode Pt/Ir 90/10 and Mo/Pt
wrapped wire Stainless steel 1.4404
Collector Tungsten
Reflector NiFe
Flange connection DN 40 CF
Electrode system configuration Bayard-Alpert Extractor system
Ambient temperature during
operation 20 to 80 °C
Maximum flange temperature with
bakeable gauge cable 250 °C
Maximum bakeout temperature
(with no cable connected) 400 °C
Maximum recommended rate of
temperature change during bakeout 5 °C per minute
Storage temperature 20 to 50 °C
Relative humidity
Annual average 65% (non-condensing)
On 60 days 85% (non-condensing)
Use Indoors (altitude 2000 m maximum above sea level)
X-ray limit < 1 x 10-11 mbar (hPa) < 1 x 10-12 mbar (hPa)
Upper limit of measuring range 1 x 10-2 mbar (hPa) 1 x 10-4 mbar (hPa)
Lower limit of measuring range 2 x 10-11 mbar (hPa) 2 x 10-12 mbar (hPa)
D0300030001EN - Technical data
Page 5
Table 2 Bakeable gauge head cable
Table 3 Operating characteristics when used with control unit PGC202
Dimensions
Figure 1 Dimensions
Description Value
Maximum bakeout temperature 200 °C
Recommended rate of temperature
change
5 °C per minute
Insulation materials used PTFE, PEEK
Length 5, 10 or 50 m
Description IG40 BA IG40 EX
Collector potential 0 V
Cathode potential +80 V +100 V
Anode potential +220 V +220 V
Reflector potential - +205 V
Emission current range 100 A, 10 mA 1.6 mA
Cathode heater current 1.5 A (typical)
Cathode heater voltage 3 V (typical) 3.7 V (typical)
Sensitivity for nitrogen 17 mbar-1 (hPa-1) (typical) 6.25 mbar-1 (hPa-1) (typical)
Maximum bake-out power 90 mA/480 V 45 mA/480 V
IG40 BA IG40 EX
D0300030001EN - Installation
Page 6
Installation
Supplied equipment
Assembly
When mounting the gauge head to the vacuum system, ensure that the gauge is not
subjected to mechanical oscillations, vibrations or impacts.
Do not install a vent valve in the immediate vicinity of the gauge head. Sudden changes in air
flow may result in mechanical damage to the sensitive cathode. The mounting position of the
gauge head has no influence on the correct operation.
When installing several gauge heads at one common component (T-piece or cross for
example) an optical separation is required. The gauge heads must not be in direct line of sight
of each other. Interactions may cause incorrect measurements.
Table 4 Gauges
Description Quantity
Gauge 1
Operating manual 1
Table 5 Bakeable gauge head cable
Description Quantity
Bakeable gauge head cable 1
Housing with cover 1
Ion collector cable 1
Countersunk screws 2
Operating manual 1
WARNING:
Installation, mounting and removal may only be carried out with the operating unit
switched off.
WARNING:
As a rule, all ionisation measurement systems must only be operated in connection with
a properly earthed pump system.
Note:
Humidity at the insulators (Figure 2 item 14) caused by condensing water for example, can
give rise to incorrect measurements due to leakage currents.
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