Granville-Phillips 475 Series User manual

Series 475
Instruction Manual
Granville-Phillips®Series 475 Convectron®
Vacuum Measurement Controller
Instruction manual part number 475101
Revision G - January 2015

Instruction Manual
Series 475
This Instruction Manual is for use with all Granville-Phillips
Series 475 Vacuum Measurement Controllers. A list of
applicable catalog numbers is provided on the following page.
This product is RoHS compliant.
Granville-Phillips®Series 475 Convectron®
Vacuum Measurement Controller
© 2015, MKS Instruments, Inc. All rights reserved. Granville-Phillips®and Convectron®
are registered trademarks of MKS Instruments, Inc. All other trademarks and registered
trademarks are the properties of their respective owners.
Customer Service/Support
For Customer Service or Technical Support 24 hours per day,
7 days per week, every day of the year including holidays:
Phone: [phone] or [phone]
MKS, Granville-Phillips Division
6450 Dry Creek Parkway
Longmont, CO 80503 USA
Phone: [phone] or 1-800-776-6543
FAX: [phone]
Email: [email protected]
Corporate Office
MKS Instruments, Inc.
2 Tech Drive, Suite 201
Andover, MA 01810 USA
Phone: [phone]
www.mksinst.com

Granville-Phillips Series 475 Convectron
Vacuum Measurement Controller
Catalog numbers for Series 475 Convectron Vacuum Measurement Controller with Graphic Display
1/8 DIN Panel Mount or Benchtop Mount
Controller:
1/8 DIN Panel Mount or Benchtop Mount 475001 - X X - X
Interface:
None 0
RS-232 A
RS-485/422 B
Setpoints:
No setpoints 0
Two setpoints 2
Measurement Units:
Torr T
mbar M
Pascal P
Power Supply:
Universal, CE Compliant 475008 - X
Power Cords:
North American 115 VAC & Japan 100 VAC 1
North American 240 VAC 2
Universal Europe 220 VAC 3
United Kingdom 240 VAC 4
Convectron Gauges
Gold-Plated Tungsten Sensor
275071 1/8 inch NPT / 1/2 inch compression fitting
275185 1/4 inch VCR-type female fitting
275233 3/8 inch VCO-type male fitting
275282 1/2 inch VCR-type female fitting
275256 1.33 inch (NW16CF) rotatable ConFlat-type flange
275238 2.75 inch (NW35CF) rotatable ConFlat-type flange
275203 NW16KF flange
275196 NW25KF flange
275316 NW40KF flange
Platinum Sensor
275320-PP 1/8 inch NPT, ½ inch compression fitting
275320-PQ 1/4 inch VCR-type female fitting
275320-PR 1/2 inch VCR-type female fitting
275320-PF 1.33 inch CF (NW16CF) rotatable ConFlat-type flange
275320-PG 2.75 inch CF (NW35CF) rotatable ConFlat-type flange
275320-PD NW16KF flange
275320-PE NW25KF flange
275320-PK NW40KF flange
275320-PB 15 mm OD tubulation, metric O-ring compression fitting

Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G 5
Table of Contents
Chapter 1 Safety & Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.1 Caution and Warning Statements . . . . . . . . . . . . . . . . . . . . . 9
1.2 Reading and Following Instructions . . . . . . . . . . . . . . . . . . . 9
1.3 System Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.4 Explosive Gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5 Explosion / Implosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.6 Overpressure Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.7 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.8 Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.9 Extended Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.10 Service Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.11 Damage Requiring Service . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.12 Specifications & Compliance . . . . . . . . . . . . . . . . . . . . . . . . 13
Chapter 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Pre-Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . 17
2.3 Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.4 Install Pressure Relief Devices . . . . . . . . . . . . . . . . . . . . . . . . 18
2.5 Mount the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.6 Install the Convectron Gauge . . . . . . . . . . . . . . . . . . . . . . . . 20
Install Vacuum Chamber Fittings . . . . . . . . . . . . . . . . . . . . . 21
Ground the Convectron Gauge . . . . . . . . . . . . . . . . . . . . . . . 22
2.7 Connect the Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.8 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.9 Configure the Relays for the Application . . . . . . . . . . . . . . . . 26
2.10 Requirements for Process Control Option . . . . . . . . . . . . . . . 26
Chapter 3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.1 Preparing for Pressure Measurement . . . . . . . . . . . . . . . . . . . 27
3.2 Button Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3 Initial Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4 Menu Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Diagnose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.5 Configure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Setpoint Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
RS-232 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
RS-485/422 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Pressure Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Display Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Gas Species . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Pressure Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Restore Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Save Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Gauge Sensor Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

6Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G
Table of Contents
Correction Factor Parameters . . . . . . . . . . . . . . . . . . . . . . . . 38
3.6 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.7 Preparing For Convectron Gauge Operation . . . . . . . . . . . . . 40
3.8 Convectron Gauge Theory of Operation . . . . . . . . . . . . . . . . 40
3.9 Convectron Gauge Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3.10 Using Gases Other than N2 or Air . . . . . . . . . . . . . . . . . . . . 41
Effects on User Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Indicated vs. True Pressure for Gases Other Than N2or Air . 42
Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.11 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Calibration Ranges for Different Gas Species . . . . . . . . . . . . 51
Vacuum Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Atmosphere Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Convectron Gauge Use Below 10-3 Torr . . . . . . . . . . . . . . . . 52
NIST Traceable System Calibration . . . . . . . . . . . . . . . . . . . . 52
3.12 Convectron Gauge Analog Output Signal . . . . . . . . . . . . . . . 53
Default Analog Output of 0 to 7 V . . . . . . . . . . . . . . . . . . . . 55
Optional Analog Output of 1 to 8 V . . . . . . . . . . . . . . . . . . . 55
Optional Nonlinear Analog Output “S Curve” . . . . . . . . . . . 55
3.13 Analog Output Mode Programming . . . . . . . . . . . . . . . . . . . 56
3.14 Process Control Setpoints & RS-232 or RS-485 Interface . . . . 56
Chapter 4 Process Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
4.1 Process Control Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
4.2 Connecting Process Control Relays . . . . . . . . . . . . . . . . . . . . 58
4.3 Setpoint Display and Adjustment . . . . . . . . . . . . . . . . . . . . . 58
4.4 Process Control Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
4.5 Process Control Factory Default Settings . . . . . . . . . . . . . . . . 59
4.6 Process Control Relay Trip Points . . . . . . . . . . . . . . . . . . . . . 60
Chapter 5 RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5.1 RS-232 Theory of Operation for the 475 Controller . . . . . . . 61
5.2 Connecting the RS-232 Computer Interface . . . . . . . . . . . . . 61
5.3 RS-232 Handshake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
5.4 Command-Response Timing . . . . . . . . . . . . . . . . . . . . . . . . . 64
5.5 Preparing the RS-232 Computer Interface . . . . . . . . . . . . . . . 64
5.6 RS-232 Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.7 RS-232 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
RS-232 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Chapter 6 RS-485 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
6.1 RS-485/422 Computer Interface Setup . . . . . . . . . . . . . . . . . 77
6.2 RS-485/422 Computer Interface Factory Default Settings . . . 77
6.3 RS-485/422 Computer Interface Settings . . . . . . . . . . . . . . . . 77
Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Bus Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Transceiver Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.4 RS-485/422 Physical Configurations . . . . . . . . . . . . . . . . . . . 78
Connecting the RS-485/422 Computer Interface . . . . . . . . . . 80
6.5 Communications Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 81
6.6 RS-485/422 Command Syntax . . . . . . . . . . . . . . . . . . . . . . . 81
6.7 RS-485/422 Response Syntax . . . . . . . . . . . . . . . . . . . . . . . . 81

Table of Contents
Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G 7
Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
6.8 Command-Response Timing . . . . . . . . . . . . . . . . . . . . . . . . . 93
6.9 RS-485 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
RS-485 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Chapter 7 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
7.1 Continuous Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
7.2 Diagnostics Requiring User Interaction . . . . . . . . . . . . . . . . . 96
Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Measurement Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
7.3 Convectron Gauge Simulator . . . . . . . . . . . . . . . . . . . . . . . . 97
Simulate a Process Operation Prior to Full System Integration 97
Analog Output Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Controller Calibration Verification . . . . . . . . . . . . . . . . . . . . 98
Chapter 8 Service and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
8.1 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
8.2 Service Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
8.3 Damage Requiring Service . . . . . . . . . . . . . . . . . . . . . . . . . . 100
8.4 Error Codes and Possible Solutions . . . . . . . . . . . . . . . . . . . . 101
8.5 Convectron Gauge Test Procedure . . . . . . . . . . . . . . . . . . . . 103
8.6 Cleaning Contaminated Convectron Gauges . . . . . . . . . . . . . 103
8.7 Reset to Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

8Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G
Table of Contents

Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G 9
Chapter 1 Safety & Introduction
1.1 Caution and Warning
Statements
This manual contains caution and warning statements with which you must
comply to prevent inaccurate measurement, property damage, or personal
injury.
Each caution or warning statement explains:
1. The specific hazard that you must prevent or unsafe practice that you
must avoid,
2. The potential result of your failure to prevent the specified hazard or
avoid the unsafe practice, and
3. What you must do to prevent the specified hazardous result.
1.2 Reading and
Following Instructions
You must comply with all instructions while you are installing, operating, or
maintaining the Controller. Failure to comply with the instructions violates
standards of design, manufacture, and intended use of the Controller.
Granville-Phillips and Brooks Automation disclaim all liability for the
customer's failure to comply with the instructions.
• Read instructions – Read all instructions before installing or operating the
Controller.
• Retain instructions – Retain the instructions for future reference.
• Follow instructions – Follow all installation, operating and maintenance
instructions.
• Heed warnings and cautions – Adhere to all warnings and caution
statements on the Controller and in these instructions.
• Parts and accessories – Install only those replacement parts and
accessories that are recommended by Granville-Phillips. Substitution of
parts is hazardous.
CAUTION
Caution statements alert you to hazards or unsafe
practices that could result in minor personal injury or
property damage.
Each caution statement explains what you must do to
prevent or avoid the potential result of the specified
hazard or unsafe practice.
WARNING
Warning statements alert you to hazards or unsafe
practices that could result in severe personal injury or
death due to electrical shock, fire, or explosion.
Each warning statement explains what you must do
to prevent or avoid the potential result of the
specified hazard or unsafe practice.

10 Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G
Chapter 1
1.3 System Grounding Ion producing equipment, such as ionization gauges, mass spectrometers,
sputtering systems, etc., from many manufacturers may, under some
conditions, provide sufficient electrical conduction via a plasma to couple a
high voltage electrode potential to the vacuum chamber. If exposed
conductive parts of the gauge, Controller, and chamber are not properly
grounded, they may attain a potential near that of the high voltage electrode
during this coupling. Potential fatal electrical shock could then occur
because of the high voltage between these exposed conductors and ground.
All components in a vacuum system used with this or any similar high
voltage product must be maintained at Earth ground for safe operation.
Connect power cords only to properly grounded outlets or sources.
1.4 Explosive Gases Do not use the Series 475 Controller or a Series 275 Convectron Gauge in
an environment of explosive or combustible gases or gas mixtures.
Operation of any electrical instrument in such an environment constitutes a
definite safety hazard. Do not use the product to measure the pressure of
explosive gases or gas mixtures. The sensor wire of a Convectron Gauge
normally operates at 125 degrees Centigrade. If a malfunction causes the
sensor wire to reach a higher temperature, it could raise the sensor wire
temperature to above the ignition point of combustible materials or gases.
Danger of explosion or inadvertent venting to atmosphere exists in all
vacuum systems which incorporate gas sources or involve processes capable
of pressuring the system above safe limits.
1.5 Explosion / Implosion Danger of injury to personnel and damage to equipment exists on all
vacuum systems that incorporate gas sources or involve processes capable
of pressuring the system above the limits it can safely withstand.
For example, danger of explosion in a vacuum system exists during
backfilling from pressurized gas cylinders because many vacuum devices
such as ionization gauge tubes, glass windows, glass belljars, etc., are not
designed to be pressurized.
1.6 Overpressure
Conditions
Do NOT subject Series 275 Convectron Gauges to pressures above 1000
Torr.
Install suitable devices that will limit the pressure from external gas sources
to the level that the vacuum system can safely withstand. In addition, install
suitable pressure relief valves or rupture disks that will release pressure at a
WARNING
Read these safety notices and warnings before
installing, using, or servicing this equipment. If you
have any doubts regarding the safe use of this
equipment, contact the Granville−Phillips Customer
Service department at the address listed in this user
manual.
Each warning statement explains what you must do
to prevent or avoid the potential result of the
specified hazard or unsafe practice.

Safety & Introduction
Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G 11
level considerably below that pressure which the system can safely
withstand.
Suppliers of pressure relief valves and pressure relief disks are listed in
Thomas Register under "Valves, Relief", and "Discs, Rupture".
Confirm that these safety devices are properly installed before installing the
Series 275 Convectron Gauge. In addition, check that (1) the proper gas
cylinders are installed, (2) gas cylinder valve positions are correct on manual
systems, and (3) the automation is correct on automated systems.
Using the N2calibration to pressurize a vacuum system above 1 Torr with
certain other gases can cause dangerously high pressures which can cause
explosion of the system. See Indicated vs. True Pressure for Gases Other
Than N2or Air on page 42.
If used improperly, Convectron Gauges can supply misleading pressure
indications that can result in dangerous overpressure conditions within the
system.
1.7 Operation It is the installer's responsibility to ensure that the automatic signals provided
by the process control module are always used in a safe manner.
Carefully check manual operation of the system and the setpoint
programming before switching to automatic operation. Where an equipment
malfunction could cause a hazardous situation, always provide for fail-safe
operation. As an example, in an automatic backfill operation where a
malfunction might cause high internal pressures, provide an appropriate
pressure relief device.
1.8 Certification MKS Instruments, Inc. certifies that this product met its published
specifications at the time of shipment from the factory. MKS Instruments
further certifies that its calibration measurements are traceable to the
National Institute of Standards and Technology to the extent allowed by the
Institute's calibration facility. See the CE Declaration of Conformity inside
envelope for the CE tests performed.
1.9 Extended Warranty MKS Instruments, Inc. provides an extended warranty period to five (5) years
from the date of shipment for the Granville-Phillips Series 475 Controllers.
The MKS Instruments, Inc. General Terms and Conditions of Sale provides
the complete and exclusive warranty for Granville-Phillips products. This
document is located on our web site at www.mksinst.com, or may be
obtained by contacting a Granville-Phillips Customer Service
Representative.
1.10 Service Guidelines Some minor problems are readily corrected on site. If the product requires
service, contact the MKS, Granville-Phillips Division Customer Service
Department at [phone] or [phone] for troubleshooting
help over the phone.
If the product must be returned to the factory for service, request a Return
Material Authorization (RMA) from Granville-Phillips. Do not return
products without first obtaining an RMA. In some cases a hazardous
materials document may be required. The MKS/Granville-Phillips Customer
Service Representative will advise you if the hazardous materials document
is required.

12 Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G
Chapter 1
When returning a products to Granville-Phillips, be sure to package the
products to prevent shipping damage. Circuit boards and modules separated
from the gauge assembly must be handled using proper anti-static protection
methods and must be packaged in anti-static packaging. Granville-Phillips
will supply return packaging materials at no charge upon request. Shipping
damage on returned products as a result of inadequate packaging is the
Buyer's responsibility.
For Customer Service or Technical Support 24 hours per day, 7 days per
week, every day of the year including holidays:
Phone: [phone] or [phone]
Email: [e-mail]
MKS, Granville-Phillips Division
6450 Dry Creek Parkway
Longmont, CO 80503 USA
Phone: [phone] or 1-800-776-6543
FAX: [phone].
1.11 Damage Requiring
Service
Turn OFF power to the Controller and refer servicing to qualified service
personnel under the following conditions:
• If any liquid has been spilled onto, or objects have fallen into the
Controller.
• If a circuit board is faulty.
• If the Convectron Gauge sensing wire is open or the gauge is
contaminated.
• If the Controller has been exposed to moisture.
• If the Controller does not operate normally even if you follow the
operating instructions. Adjust only those controls that are explained in this
instruction manual. Improper adjustment of other controls may result in
damage and will often require extensive work by a qualified technician to
restore the Controller to its normal operation.
• If the Controller has been dropped or the enclosure has been damaged.
• If the Controller exhibits a distinct change in performance.

Safety & Introduction
Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G 13
1.12 Specifications
& Compliance
Table 1-1 Specifications & Compliance for the Series 475 Controller and 275 Convectron Gauge
Parameter Specification
Measurement Range for N2/ Air 1,2 See notes 1 and 2, below
Torr 1x10-4 to 999 Torr
mbar 1x10-4 to 1333 mbar
pascal 1x10-2 to 133.3 kpa
Resolution 1x10-4 Torr, 1x10-4 mbar, 1x10-2 Pascal
Display Vacuum Fluorescent
Update rate Every 0.5 sec.
Input power 312 to 24 Vdc, 6 W continuous (Inrush <1.4A for <7 msec) (see note 3, below)
Weight 720 gr. (25 oz.)
Operating environment 0 oC to 40 oC ambient, indoor use only, ordinary protection from moisture,
maximum altitude 3000 meters
Operating conditions Suitable for continuous operation, category 1 for insulation overvoltage,
pollution degree 2, Class 1
Non-operating temperature -40 oC to 85 oC
Compliance
EMC EN61326-1
Safety EN61010-1
IP rating IP20
Environmental RoHS compliant
Setpoint relays (Optional) (2) single-pole, double-throw (SPDT) (Limit overvoltage to <2.4kv)
Contact rating 5 A @ 250 VAC resistive load
Range 1x10-4 to 1000 Torr, 0.1 to 1333 mbar, 0.01 to 133.3 kPa
Resolution 1 significant digit in the 10-4 range
2 significant digits in the 10-3 range
3 significant digits in the 10-2 range and above
Communication Interface (Optional)
RS-232
Data format ASCII, software selectable:
"8 bits, no parity, 1 stop bit
"7 bits, even parity, 1 stop bit
"7 bits, odd parity, 1 stop bit
selectable hardware handshake
Baud rate Software selectable, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400
Hardware Handshake RTS / CTS
RS-485
Data format ASCII, software selectable:
"8 bits, no parity, 1 stop bit
"7 bits, even parity, 1 stop bit
"7 bits, odd parity, 1 stop bit
Baud rate Software selectable, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400
Bus type Software selectable: two-wire or four-wire configurations
Convectron Gauge
Sensor material Gold-plated tungsten, platinum

14 Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G
Chapter 1
1. Measurements will change with different gases and mixtures. Correction
parameters must be used for gases other than N2or Air.
2. Do NOT use Convectron Gauges with flammable or explosive gases. See
Section 1.4.
3. The 24 Vdc input power must be supplied from a power supply certified to
IEC Standard with a safety extra low voltage certified output.
Figure 1-1 475 Convectron Gauge Controller Dimensions
Figure 1-2 Series 275 Convectron Gauge Dimensions
Other materials exposed to gas 304 stainless steel, borosilicate glass, Kovar, alumina, NiFe alloy, polymide
Internal volume 40 cm3(2.5 in.3)
Weight 85 gm (3 oz.)
Mounting orientation Horizontal preferred
Gauge operating temperature 0 oC to 50 oC ambient
Gauge bakeout temperature 150 oC maximum, non-operating, cable disconnected
Cable bakeout temperature 105 oC maximum
Table 1-1 Specifications & Compliance for the Series 475 Controller and 275 Convectron Gauge
Parameter Specification

Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G 15
Chapter 2 Installation
2.1 System Components Figure 2-1 and Figure 2-2 illustrate all available options and system
capabilities, including Controllers with process control and RS-232 or
RS-485 computer interface options.
Figure 2-1 Series 475 Convectron Controller Front and Rear Panels
Figure 2-2 Convectron Vacuum Measurement System Components
Analog output
connector
I/O output connector
2-channel process
control connector
Convectron Gauge
24 Vdc power supply
cable and converter
Gauge cable
NOTE: The Service Port is
for factory use only.

16 Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G
Chapter 2
Table 2-1 475 Controller Factory Defaults
Setting Range or Selection Factory Default Setting
Units of Measure Torr, mbar, pascal Torr, mbar, or pascal as
selected when the
Controller was purchased.
Gas Species N2, Ar, O2, He, CO2,
FS, CF
N2
Correction Factor 0.1 to 1.5 None
Correction Factor
Maximum Pressure
1E-3 Torr to 999 Torr 999 Torr
Front Panel Display
• Brightness 1, 2, or 3 3 (Bright)
• Setpoints displayed Yes, No No
Gauge Sensor Gold-Plated Tungsten,
Platinum
Gold-Plated Tungsten
SetPoints/Outputs
• SP1 Pressure 1E-4 Torr to 1000 Torr 1.00E-4
• SP2Pressure 1E-4 Torr to 1000 Torr 1.00E-4
• SP1 Hysteresis 5 to 1000 percent 10
• SP2 Hysteresis 5 to 1000 percent 10
• SP1 Polarity Normal, Reverse Normal
• SP2 Polarity Normal, Reverse Normal
• SP1 Enable Disable, Enable Disable
• SP2 Enable Disable, Enable Disable
• Analog Out Mode Log 0-7V, Log 1-8V,
S-curve
Log 0 V-7 V
• Analog Out Offset 0.0V to 5.0V 0V
Low-Pass Filter (LPF) Disable, Enable Enable
Pressure Response
Delay (ms)
0 to 200 ms 0 ms
RS-232
• Baud Rate Baud Rate: 1200, 2400,
4800, 9600, 14400,
19200, 28800, 38400
19200 baud
• Data Format Bits:
• 8N1 (8 data bits,
No parity, 1 stop bit)
• 7E1 (7 data bits,
Even parity, 1 stop bit)
• 7O1 (7 data bits,
Odd parity, 1 stop bit)
8 data bits, No parity, 1
stop bit

Installation
Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G 17
2.2 Pre-Installation
Considerations
This chapter guides you through the basic setup procedures for the 475
Controller, including mounting the Controller, installing a Convectron
Gauge, connecting vacuum chamber fittings, and connecting wiring.
If your application requires different settings than the factory defaults listed
in Table 2-1, see Chapters 3, 4, and 5 for instructions on changing the
settings. You can reconfigure options before or after completing the basic
setup procedures described in this chapter.
• Hardware
Handshake
RTS / CTS or None None
RS-485
• Baud Rate Baud Rate: 1200, 2400,
4800, 9600, 14400,
19200, 28800, 38400
19200 baud
• Data Format Bits:
• 8N1 (8 data bits,
No parity, 1 stop bit)
• 7E1 (7 data bits,
Even parity, 1 stop bit)
• 7O1 (7 data bits,
Odd parity, 1 stop bit)
8 data bits, No parity, 1
stop bit
• Bus Type Two-wire or four-wire Four-wire
• Transceiver Mode Fast or Slow Fast
Table 2-1 475 Controller Factory Defaults
Setting Range or Selection Factory Default Setting
WARNING
Installing, removing, or replacing the 475 Controller
in a high-voltage environment can cause an electrical
discharge through a gas or plasma, resulting in
property damage or personal injury due to electrical
shock or fire.
Vent the vacuum chamber to atmospheric pressure
and shut OFF power to the Controller before you
install, remove, or replace the Controller.
WARNING
Exposing the Controller to moisture can cause fire or
electrical shock resulting in product damage or
personal injury.
To avoid exposing the Controller to moisture, install
the Controller in an indoor environment. Do not
install the Controller in any outdoor environment. Do
not spill any liquid onto the Controller.

18 Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G
Chapter 2
2.3 Installation Procedure The Controller installation procedure includes the following steps:
1. Install the appropriate pressure relief devices in the vacuum system.
2. Establish the desired location and orientation for the Series 475
Controller.
3. Install the Convectron Gauge that connects to the Controller.
4. Assemble and connect the Controller wiring.
5. Adjust the process control relays for the process pressures that will be
used.
2.4 Install Pressure Relief
Devices
Before you install the Controller, install appropriate pressure relief devices in
the vacuum system.
Granville-Phillips does not supply pressure relief valves or rupture disks.
Suppliers of pressure relief valves and pressure relief disks can be located via
an on-line search, and are listed on ThomasNet.com under “Relief Valves”
and “Rupture Discs. Confirm that these safety devices are properly installed
before installing and operating the product.
2.5 Mount the Controller To locate and orient the Controller, refer to Figure 2-3 and follow the
instructions below.
• For greatest accuracy and repeatability, locate the Controller in a stable,
room-temperature environment. Ambient temperature should never
exceed 40 °C (104 °F) operating, non-condensing, or 85 °C (185 °F)
non-operating.
• Provide adequate ventilation for the Controller to dissipate 6 Watts.
• Locate the Controller away from internal and external heat sources and in
an area where ambient temperature remains reasonably constant.
• Do not locate the Controller where it will be exposed to corrosive gases
such as mercury vapor or fluorine.
See Install the Convectron Gauge on page 20 for Convectron Gauge
installation instructions.
CAUTION
Operating the Controller above 1000 Torr (1333
mbar, 133 kPa) true pressure could cause pressure
measurement error or product failure.
To avoid measurement error or product failure due to
overpressurization, install pressure relief valves or
rupture disks in the system if pressure exceeds 1000
Torr (1333 mbar, 133 kPa).

Installation
Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G 19
Figure 2-3 Controller Dimensions
The Controller may be free-standing or panel-mounted. For free standing
(benchtop) use, install the provided self-adhesive rubber feet on the bottom
of the Controller.
To use the Controller in a free-standing (benchtop) configuration:
1. Apply the four provided adhesive rubber mount feet on the bottom of the
Controller.
Figure 2-4 Mount Feet on the Bottom of the Controller
To mount the Controller in a panel, refer to Figure 2-5 and Figure 2-6, and
follow these steps:
• Panel opening dimensions are 92 mm x 45 mm (3.6 inches x 1.77 inch).
• Panel thickness is 3 mm (1/8 inch).
• Provide a minimum of 64 mm (2.5 inch) clearance behind the Controller
to allow for cables.
1. Prepare the panel opening per the dimensions listed on Figure 2-3 and

20 Series 475 Convectron Gauge Controller Instruction Manual 475101 - Rev. G
Chapter 2
the bullet points listed above.
2. Remove the Front Panel (bezel) as shown in Figure 2-5. Hold the
Controller in your hands and use your thumbs to push on the bezel. Push
the bottom of the bezel loose, then the top.
Figure 2-5 Remove the Front Panel (bezel)
3. Insert the Controller through the front of the panel.
Figure 2-6 Pawl Screw Used to Secure Controller to Panel
4. Use a Phillips head screwdriver to rotate the Pawl Screw to lock the
Controller to the panel. See Figure 2-6.
5. Replace the bezel by aligning it with the keys and push the top and the
bottom of the bezel to snap it into place.
2.6 Install the Convectron
Gauge
To install Convectron Gauges, refer to Figure 2-7 and follow the instructions
below.
• Orient the Convectron Gauge to prevent condensation of process vapors
on the internal surfaces through line-of-sight access to its interior. If vapor
condensation is likely, orient the port downward to help liquids drain out.
• For proper operation above about 1 Torr, install Convectron Gauges with
the gauge axis horizontal.