Edwards CPG35K User manual

edwardsvacuum.com
CPG35K AND CP35KB PASSIVE
PENNING GAUGE
INSTRUCTION MANUAL
Publication number: D0300010001EN
Issue: A
Original Instructions

This product has been manufactured under a quality management system certified to ISO 9001:2008
07.06.2017, Eastbourne
Declaration of Conformity
We, Edwards,
Innovation Drive,
Burgess Hill,
West Sussex,
RH15 9TW, UK
declare under our sole responsibility, as manufacturer and person within the EU authorised
to assemble the technical file, that the product(s)
•Passive Penning (CPG) gauges connected to controllers (PGC).
D03000100
CPG35K – NW40
D03000110
CPG35K – DN40CF
D03000130
CPG35K – NW25
D03000140
CPG35KB – DN40CF
D03000400
PGC201 Pirani/Penning Contr +*
D03000101
CPG cable 5 m
D03000102
CPG cable 10 m
D03000103
CPG cable 20 m
D03000104
CPG cable 30 m
D03000105
CPG cable 50 m
to which this declaration relates is in conformity with the following standard(s) or other
normative document(s)
EN61010-1:2010 Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use. General Requirements
EN61326-1:2013 Class B,
Industrial Electrical equipment for measurement, control and laboratory
Use. EMC requirements. General requirements
and fulfils all the relevant provisions of
(+) 2014/35/EU Low Voltage Directive
(*) 2014/30/EU Electromagnetic Compatibility (EMC) Directive
2011/65/EU Restriction of Certain Hazardous Substances (RoHS) Directive
2012/19/EU Waste from Electrical and Electronic Equipment (WEEE) Directive
Note: This declaration covers all product serial numbers from the date this Declaration was
signed onwards.
Larry Marini, Senior Technical
Date and Place
P200-10-166 Issue A

This page intentionally blank.

Copyright notice
© Edwards Limited 2017. All rights reserved.
Trademark credits
Edwards and the Edwards logo are trademarks of Edwards Limited.
D0300010001EN - Copyright notice
Page 2

D0300010001EN - Contents
Page i
Contents
Safety 1
Symbols used .................................................................................................................... 1
Symbols for residual risks ........................................................................................... 1
Personnel qualifications ................................................................................................... 1
General safety instructions ............................................................................................... 1
Responsibility and warranty ............................................................................................. 2
Description 3
Product Identification ....................................................................................................... 3
Validity .............................................................................................................................. 3
Intended use ..................................................................................................................... 3
Technical data 4
Installation 5
Supplied equipment ......................................................................................................... 5
Unpacking and inspecting ................................................................................................. 5
Vacuum connection .......................................................................................................... 5
Electrical connection ......................................................................................................... 5
Maintenance 6
Cleaning of the gauge head .............................................................................................. 6
Mechanical maintenance .................................................................................................. 7
Removing and replacing the anode ring and the cathode plate ................................. 7
Detaching the permanent magnet .............................................................................. 8
Spare parts and accessories 9
Spares ............................................................................................................................... 9
Accessories ....................................................................................................................... 9
Storage 10
Returning the product 11
Disposal 12
Separating the components ........................................................................................... 12
Contaminated components ....................................................................................... 12
Other components .................................................................................................... 12
Other Disposal Information ....................................................................................... 12
cg/03/17

D0300010001EN - Contents
Page ii
List of Figures
Dimensions ................................................................................................................ 4
Sectional view of the CPG35K(B) gauge head ........................................................... 7

D0300010001EN - 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
to be performed and consider the safety instructions in this document.
 Ensure that all vacuum components have not been contaminated before beginning
any work. If so, adhere to the relevant regulations and take the necessary precautions
when handling contaminated parts.
Communicate the safety instructions to all other users.
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.
Note:
Information on correct handling or use. Disregard can lead to malfunctions or minor
equipment damage.

D0300010001EN - Safety
Page 2
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).
 Operate the product with accessories not listed in the corresponding product
documentation.
Subject to technical alterations without prior notice. The figures are not binding.

D0300010001EN - Description
Page 3
Description
The CPG is a Penning gauge head. Operation of the gauge head is based on the principle of
cold cathode ionisation.
Product Identification
In all communication with Edwards, please specify the information on the product
nameplate.
Validity
This document applies to the following part numbers:
Intended use
The CPG may only be used for the measurements of total pressures in vacuum systems and
only when converted to a PGC201 vacuum gauge controller instrument.
Product Description Item number
CPG35K NW40 Passive Penning Gauge D03000100
CPG35K DN40CF Passive Penning Gauge D03000110
CPG35K NW25 Passive Penning Gauge D03000130
CPG35KB DN40CF Passive Penning Gauge Bakeable D03000140

D0300010001EN - Technical data
Page 4
Technical data
Figure 1 Dimensions
Measurement principle Gas discharge
Measurement range 1 x 10-9 to 1 x 10-2 mbar
Material in contact with the
medium
Cr, Mo, Nb, Ti, Ni, NiFe, NiCr, glass and ceramics
Disruption pressure (burst
pressure) (absolute)
10 bar
Ambient temperature
CPG35K 80 °C
CPG35KB 200 °C
Measurement volume
CPG35K - NW25 and NW40 approximately 18 cm3
CPG35K and KB - DN40CF approximately 21 cm3
Connection flange
CPG35K NW25
CPG35K NW40
CPG35K DN40CF
CPG35KB DN40CF
Weight
CPG35K - NW25 and NW40 approximately 0.30 kg
CPG35K and KB - DN40CF approximately 0.60 kg

D0300010001EN - Installation
Page 5
Installation
Supplied equipment
 CPG gauge head
 Operating instructions
The gauges outlined in this manual are for use with the Edwards PGC201 controller.
Unpacking and inspecting
Remove all packing materials and protective covers and check the CPG35K(B) gauge. If the
CPG35K(B) gauge is damaged, notify your supplier and carrier in writing within three days;
state the Item Number of the CPG35K(B) gauge together with the order number and
supplier's invoice numbers. Retain all packaging materials for inspection. Do not use the
CPG35K(B) gauge if it is damaged.
Vacuum connection
The gauge head is connected via a NW25/NW40 flange and a centring-ring to the vacuum
system. In the case of DN 40 CF flanges a copper gasket must be inserted between the flanges.
All gauges should be located as close as possible to the point where the pressure is to be
measured with the exception of cases where there is potential for considerable
contamination of the gauge head. In these cases, the gauge head should be mounted a short
distance away (behind an elbow).
In the case of long and narrow connections, the measured pressure will be too low, mainly
because of gas consumption by the gauge head. The gauge head may be mounted in any
position, but preferably not at the lowest point in the vacuum system.
Electrical connection
The knurled screw on the plug is used to lock the connection.
WARNING:
Do not use the CPG for safety critical applications. The CPG is not intended to be fail safe.
WARNING:
Do not use the CPG to measure the pressure of explosive of flammable gasses or mixtures.
CAUTION:
When connecting the gauge head cable special care must be taken to plug the cable end
equipped with the socket contact onto the pins of the gauge head connector.

D0300010001EN - Maintenance
Page 6
Maintenance
Cleaning of the gauge head
To clean the gauge, pull out anode ring (Figure 2 item 5), ceramic disc (Figure 2 item 6) and
cathode plate (Figure 2 item 4) inside the housing (see Mechanical maintenance). If required,
clean the anode ring with abrasive emery cloth. Do not attempt to clean the cathode plates.
Dirty cathode plates must be exchanged.
In order to provide protection against soiling of the bushing, the gauge heads are supplied
with a ceramic disk between the anode ring and the bushing.
The position of the disk is shown in Figure 2.
Each time the anode ring or cathode plate is exchanged, the ceramic disc must also be
exchanged.
No cleaning is required when exchanging the cathode plate and anode ring. Refer to
Mechanical maintenance.
After removing the emery paper residues and reassembly of the components, any
fingerprints and other residues have to be removed by rinsing the gauge head with a solvent,
followed by a drying period.
For thorough cleaning of the gauge head cell, it is recommended to dismantle the permanent
magnets. Only then it is possible to flush out any iron filings from the measuring chamber that
have been attracted by the magnets.
WARNING:
Contaminated parts can be detrimental to health and environment.
Before beginning work, find out whether any parts are contaminated. Adhere to the
relevant regulations and take the necessary precautions when handling contaminated
parts.
CAUTION:
Dirt and damage can impair the function of the vacuum component.
When handling vacuum components, take appropriate measures to ensure cleanliness
and prevent damage.
CAUTION:
Touching the product with bare hands increases the desorption rate.
Always wear clean, lint-free gloves and use clean tools when working in this area.

D0300010001EN - Maintenance
Page 7
Figure 2 Sectional view of the CPG35K(B) gauge head
Mechanical maintenance
Removing and replacing the anode ring and the cathode plate
1. With a pair of flat nose pliers it is possible to remove the anode ring and the cathode
plate (Figure 2 item 4) fixed elastically in the measurement chamber from the
measurement chamber.
2. Replace or clean the removed parts (see Cleaning of the gauge head).
3. After having inserted the anode ring it should be strictly observed that the two open
sides of the anode ring are equally distant from the cathode plate and that the ignition
pins don't touch the chamber (distance approximately 1 mm).
Note:
Do not allow the ceramic bushing to get wet as it is able to absorb water.
The leakage current which results then causes the pressure to be shown on the operating
device as higher than it actually is.
1 Small flange NW25, NW40, DN40 CF
2 Gauge head body
3 Anode pin
4 Cathode plate
5 Anode ring with ignition pin
6 Ceramic disc
7 Current leadthrough
8 Connection socket

D0300010001EN - Maintenance
Page 8
Detaching the permanent magnet
1. Detach the gauge head cable.
2. Unscrew and remove the nut on the protection cap.
3. Remove the protection cap and the magnet.
4. Clean as described in Cleaning of the gauge head.
5. Reassemble in the reverse order.

D0300010001EN - Spare parts and accessories
Page 9
Spare parts and accessories
Spares
When ordering spare parts, always indicate:
 All information on the product nameplate.
 Description and ordering number according to the spare parts list.
Accessories
Description Item number
Spare cathode plates and discs D03000109
Spare Anode Ring D03000119
Description Item number
CPG Cable 5 m D03000101
CPG Cable 10 m D03000102
CPG Cable 20 m D03000103
CPG Cable 30 m D03000104
CPG Cable 50 m D03000105

D0300010001EN - Storage
Page 10
Storage
CAUTION:
Inappropriate storage leads to an increase of the desorption rate and/or may result in
mechanical damage of the product.
Cover the vacuum ports of the product with protective lids or grease free aluminum foil.
Do not exceed the admissible storage temperature range.

D0300010001EN - Returning the product
Page 11
Returning the product
Products that are not clearly declared as "free of harmful substances" are decontaminated at
the expense of the customer.
Products not accompanied by a duly completed declaration of contamination are returned to
the sender at his own expense.
WARNING:
Products returned to Edwards for service or repair should, if possible, be free of harmful
substances (for example, radioactive, toxic, caustic or microbiological). Otherwise, the
type of contamination must be declared.
Adhere to the forwarding regulations of all involved countries and forwarding companies
and enclose a completed contamination declaration.

D0300010001EN - Disposal
Page 12
Disposal
Separating the components
After disassembling the product, separate components according to the following criteria:
Contaminated components
Contaminated components (radioactive, toxic, caustic or biological hazard, and so forth) must
be decontaminated in accordance with all local and national regulations, separated according
to their materials, and disposed of.
Other components
Such components must be separated by material make-up and then recycled.
Other Disposal Information
The CPG35K(B) and associated cables are within the scope of the European Directive on
Waste and Electronic Equipment, 2012/19/EU. Edwards offers 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 CPG and/or cables for recycling.
WARNING:
Contaminated parts can be detrimental to health and environment.
Before beginning to work, find out whether any parts are contaminated. Adhere to the
relevant regulations and take the necessary precautions when handling contaminated
parts.
WARNING:
Products returned to Edwards for service or repair should, if possible, be free of harmful
substances (for example, radioactive, toxic, caustic or microbiological). Otherwise, the
type of contamination must be declared.
Adhere to the forwarding regulations of all involved countries and forwarding companies
and enclose a completed contamination declaration.

Return the equipment or components for service
Before you send your equipment to us for service or for any other reason, you must send us a
completed Declaration of Contamination of Vacuum Equipment and Components – Form HS2. The
HS2 form tells us if any substances found in the equipment are hazardous, which is important for
the safety of our employees and all other people involved in the service of your equipment. The
hazard information also lets us select the correct procedures to service your equipment.
We provide instructions for completing the form in the Declaration of Contamination of Vacuum
equipment and Components – Procedure HS1.
If you are returning a vacuum pump, note the following:
 If a pump is configured to suit the application, make a record of the configuration before
returning the pump. All replacement pumps will be supplied with default factory settings.
 Do not return a pump with accessories fitted. Remove all accessories and retain them for
future use.
 The instruction in the returns procedure to drain all fluids does not apply to the lubricant in
pump oil reservoirs.
Download the latest documents from www.edwardsvacuum.com/HSForms/, follow the procedure in
HS1, fill in the electronic HS2 form, print it, sign it, and return the signed copy to Edwards.
Note: If we do not receive a completed HS2 form, we will not accept the return of the
equipment.
P80081000, Issue A

P800‐80‐000IssueT
edwardsvacuum.com