MKS Granville-Phillips Mini-Convectron 275... User manual

Granville-Phillips®Series 275 Mini-Convectron®
Vacuum Gauge Module with Linear Analog Output
Instruction Manual
Instruction manual part number 275539
Revision G - November 2016
Series 275
Instruction Manual

Series 275 Mini-Convectron Module with both linear and non-linear
analog output, no setpoint relays, and no digital display panel.
0 to 1 Torr linear analog output (0 to 10 Vdc)
1 mTorr to 1000 Torr nonlinear analog output (0.375 to 5.659 Vdc).

This Instruction Manual is for use with all Granville-Phillips Series
275 Mini-Convectron Vacuum Gauge Modules with Linear Analog
Output. A list of applicable catalog numbers is provided on the
following page.
The 275330 product is RoHS Compliant.
Series 275
© 2016 MKS Instruments. All rights reserved.
Granville-Phillips®and Convectron®are registered trademarks, and mksinstTM is a trademark
of MKS Instruments, Inc. All other trademarks and registered trademarks are the properties of
their respective owners.
Granville-Phillips®Series 275 Mini-Convectron®
Vacuum Gauge Module with Linear Analog Output
Instruction Manual
Customer Service / Technical Support:
MKS Pressure and Vacuum Measurement Solutions
MKS Instruments, Inc., Granville-Phillips® Division
6450 Dry Creek Parkway
Longmont, Colorado 80503 U.S.A.
Tel: [phone]
Fax: [phone]
Email: [email protected]
MKS Corporate Headquarters
MKS Instruments, Inc.
2 Tech Drive, Suite 201
Andover, MA 01810
Tel: [phone]
Fax: [phone]
Email: [email protected]

Catalog numbers for Series 275 Mini-Convectron Modules
with Linear Analog Output (CE Marked)
Includes a 9-pin D subminiature electrical connector. Operating power: 13.6 Vdc to 26.5 Vdc.
The 27585X series Mini-Convectron Modules have both linear and non-linear analog output,
no setpoint relays, and no digital display panel.
The 275330-XX series Mini-Convectron Modules are the same as the 27585X series, and are also
RoHS compliant.
0 to 1 Torr linear analog output (0 to 10 Vdc) and 1 mTorr to 1000 Torr nonlinear analog output
(0.375 to 5.659 Vdc).
Mini-Convectron Module with: Catalog #
1/8 NPT / 1/2 inch tubulation 275850-EU
1/4 inch VCR-type female fitting 275851-EU
1/2 inch VCR-type female fitting 275862-EU
3/8 inch VCO-type male fitting 275852-EU
1.33 inch (NW16CF) ConFlat-type flange 275853-EU
2.75 inch (NW35CF) ConFlat-type flange 275854-EU
NW10KF flange 275855-EU
NW16KF flange 275856-EU
NW25KF flange 275857-EU
NW40KF flange 275858-EU
NW50KF flange 275859-EU
Tailored Function (20)275580-GQ
Tailored Function (20)275557-EU
Tailored Function (20)275935-XX-X
RoHS Compliant Mini-Convectron Module with: Catalog #
1/8 NPT / 1/2 inch tubulation 275330-GP
1/4 inch VCR-type female fitting 275330-GQ
1/2 inch VCR-type female fitting 275330-GR
3/8 inch VCO-type male fitting 275330-GH
1.33 inch (NW16CF) ConFlat-type flange 275330-GF
2.75 inch (NW35CF) ConFlat-type flange 275330-GG
NW10KF flange 275330-GS
NW16KF flange 275330-GD
NW25KF flange 275330-GE
NW40KF flange 275330-GK
NW50KF flange 275330-GU
VCR & VCO are registered trademarks of Swagelok Company

Mini-Convectron Module Instruction Manual - 275539 5
Table of Contents
Chapter 1 Introduction/Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 About These Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Reading and Following Instructions . . . . . . . . . . . . . . . . . . 7
1.3 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Explosion / Implosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.5 System Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.6 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.7 Service Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.8 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 Module Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Installing Pressure Relief Devices . . . . . . . . . . . . . . . . . . . . 15
2.3 Installation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Step 1 Location and Orientation of the Module . . . . . . . . . . . . . . . 16
Determine the Best Location for the Module . . . . . . . . . . . . 16
Orientation of the Module . . . . . . . . . . . . . . . . . . . . . . . . . 17
Step 2 Attach the Module to the Vacuum Chamber . . . . . . . . . . . . 18
1/8 NPT pipe thread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
VCR type fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
KF flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
ConFlat flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Step 3 Assemble and Connect the Power and Interface Wiring . . . 19
Connecting Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Wiring Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Step 4 Calibrate the Convectron Gauge . . . . . . . . . . . . . . . . . . . . . 21
Calibrate at Atmosphere . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Calibrate at Vacuum Chamber Pressure . . . . . . . . . . . . . . . 22
Set the ZERO Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Set the FULL SCALE Adjustment . . . . . . . . . . . . . . . . . . . . . 23
Chapter 3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.1 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2 Front Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.3 Preparing for Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4 Nonlinear (Bridge) Analog Output . . . . . . . . . . . . . . . . . . . 27
3.5 Understanding Convectron Gauge Pressure Measurement
In Gases Other Than Nitrogen or Air . . . . . . . . . . . . . . . . . . 28
3.6 Commonly used Gases Other than N2or Air . . . . . . . . . . . . 29
3.7 Bridge Analog Output Voltage . . . . . . . . . . . . . . . . . . . . . . 32
3.8 Linear Analog Output Voltage . . . . . . . . . . . . . . . . . . . . . . . 32
3.9 External Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table of Contents
6Mini-Convectron Module Instruction Manual - 275539
3.10 Modules Operating at Low Pressure . . . . . . . . . . . . . . . . . . 44
Chapter 4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.1 Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Damage Requiring Service . . . . . . . . . . . . . . . . . . . . . . . . . 45
4.2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Symptoms, Causes, and Solutions . . . . . . . . . . . . . . . . . . . . 47
4.3 Convectron Gauge Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4.4 Convectron Gauge Removal and Replacement . . . . . . . . . . 49
Removing the Convectron Gauge . . . . . . . . . . . . . . . . . . . . 49
Replacing the Convectron Gauge . . . . . . . . . . . . . . . . . . . . 49
4.5 Returning a Product for Repair . . . . . . . . . . . . . . . . . . . . . . 50
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Mini-Convectron Module Instruction Manual - 275539 7
Introduction/Safety Installation Operation Maintenance
Chapter 1 Introduction/Safety
1.1 About These
Instructions
The instructions in this User Manual explain how to install, operate, and
maintain the Granville-Phillips®Mini-Convectron®vacuum gauge module.
In these instructions the word “product” refers to the Mini-Convectron
Module and all of its approved parts and accessories.
•This chapter explains the caution and warning statements used
throughout the manual which must be adhered to at all times, your
responsibility to read and follow all instructions, how to contact customer
service, and product specifications.
•Chapter 2 explains how to install and connect the module.
•Chapter 3 explains the theory of operation, how to operate the module,
and how to use the module with various gases.
•Chapter 4 explains troubleshooting, Convectron gauge testing, removal
and replacement, and module return-for-repair procedures.
1.2 Reading and Following
Instructions
You must comply with all instructions while you are installing, operating,
or maintaining the module. Failure to comply with the instructions violates
standards of design, manufacture, and intended use of the module.
Granville-Phillips and MKS Instruments, Inc. disclaim all liability for the
customer's failure to comply with the instructions.
•Read instructions – Read all instructions before installing or operating the
product.
•Follow instructions – Follow all installation, operating and maintenance
instructions.
•Retain instructions – Retain the instructions for future reference.
•Heed warnings and cautions – Adhere to all warnings and caution
statements on the product 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.
Table 1-1 Terms Describing the Mini-Convectron Module and Components
Term Description
Module The Mini-Convectron vacuum gauge module, which contains a Convectron
convection-enhanced Pirani heat-loss pressure gauge.
Convectron Gauge The Convectron convection-enhanced Pirani heat-loss gauge, which measures
pressure within the vacuum chamber

Chapter 1
8Mini-Convectron Module Instruction Manual - 275539
1.3 Safety Instructions This manual contains caution and warning statements with which you must
comply to prevent inaccurate measurement, property damage, or personal
injury.
NOTES: These instructions do not and cannot provide for every
contingency that may arise in connection with the installation, operation, or
maintenance of this product. If you require further assistance, contact
Granville-Phillips at the address on the title page of this manual.
This product is designed and tested to offer reasonably safe service provided
it is installed, operated, and serviced in strict accordance with these safety
instructions.
Caution and warning statements comply with American Institute of
Standards Z535.1–2002 through Z535.5–2002, which set forth voluntary
practices regarding the content and appearance of safety signs, symbols,
and labels.
Each caution or warning statement explains:
a. The specific hazard that you must prevent or unsafe practice that you
must avoid,
b. The potential result of your failure to prevent the specified hazard or
avoid the unsafe practice, and
c. What you must do to prevent the specified hazardous result.
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 property damage or
personal injury 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.

Introduction/Safety
Mini-Convectron Module Instruction Manual - 275539 9
Introduction/Safety Installation Operation Maintenance
1.4 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.
WARNING
The fumes from solvents such as trichloroethylene,
perchloroethylene, toluene, and acetone can be
dangerous to health if inhaled. Use only in well
ventilated areas exhausted to the outdoors. Acetone and
toluene are highly flammable and should not be used
near an open flame or energized electrical equipment.
WARNING
If used improperly, Mini−Convectron Gauges can
supply misleading pressure indications that can result in
dangerous overpressure conditions within the system.
Do not operate in an explosive atmosphere.
Do not operate the product in the presence of flammable
gases or fumes.
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 or combustible gases or gas mixtures. The
sensor wire of the Mini−Convectron Gauge normally
operates at only 125 ˚C, but it is possible that Controller
malfunction can raise the sensor temperature above the
ignition temperature of combustible mixtures.
Danger of explosion or inadvertent venting to
atmosphere exists on all vacuum systems which
incorporate gas sources or involve processes capable of
pressurizing the system above safe limits.

Chapter 1
10 Mini-Convectron Module Instruction Manual - 275539
Series 275 instruments are furnished calibrated for N2. They also measure
the pressure of air correctly within the accuracy of the instrument. Do not
attempt to use a Series 275 Gauge calibrated for N2to measure or control
the pressure of other gases such as argon or CO2, unless accurate
conversion data for N2to the other gas is properly used. See Commonly
Used Gases Other than N2and Air, and Other Gases in the Operation
Chapter.
A pressure relief valve should be installed in the system if the possibility of
exceeding 1000 Torr (1333 mbar) exists.
Do not attach cables to glass gauge pins while the gauge is under vacuum.
Accidental bending of the pins may cause the glass to break and implode.
Cables, once installed, should be secured to the system to provide strain
relief for the gauge tube pins.
Suppliers of pressure relief valves and pressure relief disks can be located
via an online search, and are listed at ThomasNet.com under “Relief
Valves”. Confirm that these safety devices are properly installed before
installing the Mini-Convectron Module.
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.
WARNING
If accurate conversion data is not used, or is improperly
used, a potential overpressure explosion hazard can be
created under certain conditions. Using the N2
calibration to pressurize a vacuum system above about 1
Torr with certain other gases can cause dangerously
high pressures which may cause explosion of the system.
See the Chapter 3 before using with other gases.