Ideal Vacuum XGC-520 User manual

DCM-09232022 - V 1.2
Dual Capacitance Manometer
Gauge Controller (DCM)
USER MANUAL
Model XGC-520 (P1010127)

2019-2022 © Ideal Vacuum Products, LLC | [phone] | [email protected] | www.idealvac.com
DCM-09232022 - V 1.22
Ideal Vacuum Products warrants to the original purchaser this product to be free from defects in
workmanship and materials for a period of one (1) year from the original delivery date. The liability
of Ideal Vacuum under this warranty is limited to servicing, adjusting, repairing or replacing any
unit or component part which, at Ideal Vacuum’s sole discretion, is determined to have failed
during normal, intended use. This warranty does not cover improper installation, process related
damage, product used in any way other than dened in this manual, or any misuse, abuse,
negligence, accident, or customer modication to the product. Prior to returning any product, we
require that you contact us by phone or email to determine if the issue can be resolved quickly.
A technical support representative will try to resolve the problem. If we cannot resolve the issue
quickly, we will issue an RMA number and provide product return instructions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY AND THE IMPLIED
WARRANTY OF FITNESS FOR USE OR FITNESS FOR A PARTICULAR PURPOSE. IDEAL
VACUUM SHALL NOT BE LIABLE UNDER ANY CIRCUMSTANCES FOR INDIRECT,
SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OF
THE PRODUCT. THE TOTAL LIABILITY OF IDEAL VACUUM SHALL NOT EXCEED THE
PURCHASE PRICE OF THE PRODUCT UNDER ANY CIRCUMSTANCES.
CUSTOMER SERVICE AND SUPPORT
If you have any questions concerning the installation or operation of this equipment, or if you
need warranty or repair service, please contact us. Customer Service and Technical Support is
available weekdays, from 8am-5pm, Mountain Time.
Phone: [phone]
Fax: [phone]
Email: [email protected]
[email protected]
Web: idealvac.com
INTELLECTUAL PROPERTY
At Ideal Vacuum we constantly strive to innovate and improve on existing products. Therefore,
specications and information are subject to change without notice. This publication may discuss
features that may not be available in certain revisions of the product. The Ideal Vacuum Logo
is a registered trademark and the slogan “Our Products Develop Tomorrow’s Technologies”
is a trademarks of Ideal Vacuum Products, LLC. Baratron is a registered trademark of MKS
Instruments. Swagelok and VCR are registered trademarks of Swagelok Co. Termite is a
trademark of ITB CompuPhase. Reference to products, trademarks and registered trademarks
owned by other manufacturers is made strictly for informative purposes and are the sole
properties of their respective owners.Copyright © 2019-2022, Ideal Vacuum Products, LLC. All
rights reserved.
WARRANTY

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DCM-09232022 - V 1.2 3
TABLE OF CONTENTS
Warranty .......................................................................................................................................2
Customer Service and Support..................................................................................................2
Intellectual Property....................................................................................................................2
Safety............................................................................................................................................5
1. General Information ................................................................................................................6
1.1 Introduction ......................................................................................................................6
1.2 Features...........................................................................................................................7
1.3 Specications...................................................................................................................7
1.4 Dimensional Drawings .....................................................................................................8
1.5 Panel Mounting ................................................................................................................8
1.6 Front Panel Display and Controls ....................................................................................9
1.7 Back Panel Power and I/O Connections........................................................................10
1.8 Ready-made Cables and Adapters ................................................................................10
1.9 Custom Sensor and Remote Cables .............................................................................10
1.10 Sensor Connector Pinouts (DB9)................................................................................... 11
1.11 RS-232 I/O & Relay Connector Pinouts (DB15) ............................................................ 11
2. Installation .............................................................................................................................12
2.1 Mount the Gauge ...........................................................................................................12
2.2 Electrical Connections ...................................................................................................12
3. Operation ...............................................................................................................................13
3.1 Principle of Capacitance Diaphragm Gauge Operation .................................................13
3.2 Navigating Menus and Setting Parameters ...................................................................15
3.3 Menu Flowchart .............................................................................................................16
3.4 Startup ...........................................................................................................................17
3.5 Changing Pressure Measurement Units ........................................................................18
3.6 Full Scale .......................................................................................................................19
3.7 Global Settings and Defaults .........................................................................................19
3.8 Channels, Relays, and Setpoints Overview...................................................................20
3.9 Programming Setpoints .................................................................................................21
3.10 DCM Adjustment ............................................................................................................23
3.11 Zeroing a Gauge ...........................................................................................................23
3.12 Calibrating a Gauge .......................................................................................................24
4. Remote Operation .................................................................................................................25
4.1 Available RS-232 Serial Commands..............................................................................25
4.2 Serial Command Usage.................................................................................................26
4.2.1 Status Query Commands....................................................................................26
4.2.2 Input Commands.................................................................................................28
4.2.3 Reset Commands ...............................................................................................30
4.2.3 Power Commands...............................................................................................30

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DCM-09232022 - V 1.24
LIST OF TABLES
Table 1 - Technical specications..............................................................................................7
Table 2 - Front panel feature descriptions.................................................................................9
Table 3 - Available ready-made cables and adapters .............................................................10
Table 4 - DCM DB9 sensor connector pinouts ........................................................................ 11
Table 5 - DB15 RS-232 I/O connector on back of DCM.......................................................... 11
Table 6 - Factory defaults........................................................................................................19
Table 7 - Remote serial commands.........................................................................................25
LIST OF FIGURES
Figure 1 - Dimensional drawings...............................................................................................8
Figure 2 - Rails for panel mounting ...........................................................................................8
Figure 3 - Front panel features..................................................................................................9
Figure 4 - Back panel connectors ...........................................................................................10
Figure 5 - DB9 sensor connector on back of DCM ................................................................. 11
Figure 6 - DB15 RS-232 I/O connector on back of DCM ........................................................ 11
Figure 7 - DB15 male to breakout board adapter.................................................................... 11
Figure 8 - Simplied DCM installation .....................................................................................12
Figure 9 - Inside a capacitance diaphragm gauge ..................................................................13
Figure 10 - Display arrows ......................................................................................................15
Figure 11 - Navigation buttons ................................................................................................15
Figure 12 - Menu owchart .....................................................................................................16
Figure 13 - Power button.........................................................................................................17

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DCM-09232022 - V 1.2 5
SAFETY
Do not use the Dual Capacitance Manometer Gauge Controller to
measure the pressure of ammable gases. Under certain unusual
circumstances ignition leading to an explosion could occur.
IMPORTANT SAFETY INFORMATION
Thank you for purchasing this equipment from Ideal Vacuum Products. We want you to operate
it safely.
hRead this manual before installing or operating this equipment.
Failure to follow the warnings and instructions may result in serious
injury or equipment damage.
hKeep this manual in a safe location for future reference.
hThis equipment should only be installed and operated by trained,
qualied personnel, wearing appropriate protective equipment.
hFollow all codes that regulate the installation and operation of this
equipment.
Do not use gauges with straight tubing and compression ttings
in a system that may develop positive pressures. The tube could
be rapidly forced out of the tting causing equipment damage or
injury to personnel.
Do not use the Dual Capacitance Manometer Gauge Controller in
the presence of toxic chemicals, such as organic solvents without
proper ventilation.

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DCM-09232022 - V 1.26
1. GENERAL INFORMATION
1.1 INTRODUCTION
The Ideal Vacuum Products (IVP) XGC-520 Dual Capacitance Manometer Gauge Controller
(DCM) is an inexpensive solution for pressure readout of up to two Capacitance Diaphragm
Gauges (CDG’s). The IVP DCM controller provides enhanced accuracy with intelligently designed
features for simple user control and easy system integration.
The IVP DCM is designed to interface with the popular Baratron®CDG’s from MKS and can read
full scale absolute vacuum/pressure ranges from 20 mTorr (2 x 10-4 Torr) to as much as 10,000
Torr (1x104Torr). Because CDG’s measure absolute pressure, they are gas type and composition
independent. Lookup tables and conversion factors are not required.
The DCM controller can supply two gauges, heated or unheated, with dual polarity voltage (±15
VDC at 1A total).
The unit has two analog output relays, each of which can be assigned to either of the two gauge
channels, and programmed to energize when a setpoint is reached. This exibility allows the user
to easily set up automated tasks, such as valve activation or energizing a turbomolecular pump
when an appropriate backing pump pressure is achieved.
Pressure measurement units (Torr, mTorr, mBar or Pa) can be set individually for each of the two
gauges.
All user dened settings are stored in non-volatile memory and do not have to be re-entered every
time power is cycled.
Our DCM is conveniently housed in a compact 1/8-DIN extruded aluminum enclosure for benchtop
or rack panel mounting.
The brilliant, blue LCD display is easy to read and displays vital system and controller information
at a glance. The intuitive front panel membrane switch interface allows the user to access and
adjust all parameters quickly.
Remote communication and control is achieved by RS-232 serial terminal software. Connection
is made via the rear-mounted DB15 or USB-B connectors. A variety of sensor and serial cables
are available.
The DCM has a built in universal power supply which accepts an input of 100-240 VAC, 50/60Hz
though its standard C14 receptacle. Included is a 2 meter long (6 ft.) 115 VAC input power cord
with US plug 5-15P to C13 Connector. For use in other countries, the user must supply a suitable
power cord.

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DCM-09232022 - V 1.2 7
1.3 SPECIFICATIONS
Table 1 - Technical specifications
PARAMETER MEASURE/TYPE
Number of Gauges Controlled Up to 2
Units of Measure Torr, mTorr, mBar, Pa (default = Torr)
User Selectable Pressure Ranges 10 (2x10-4 to 1x104 Torr) (default = 1000 Torr)
Maximum Pressure 104 Torr
Useful Measuring Range 4 decades
Numeric Display 2 digits after decimal. If value is > 1000 or
< 1.00, display switches to E notation
Audible Beeper On/off (default = on)
Voltage to Gauge(s) ±15 VDC
Max. Supplied Current to
Gauge(s)
1A combined
Input Voltage to controller 0-10 VDC for full measuring range of gauge
Setpoints 2 (default=off)
Setpoint Relays 2A @ 30VDC, >10 K Ω, NO/NC
Rear Panel Connections C14 power input wih 3A quick acting fuse
DB9-F, for sensor gauge(s)
USB-B for I/O serial communications
DB15-F, RS-232 I/O serial and relay outputs
Serial Communications 9600 baud
8-N-1, no hardware handshake
Operating Temperature Range 0 to 50° C
Enclosure Size 1/8-DIN
Input Power 100-240 VAC, 50/60 Hz
1.2 FEATURES
hControls up to two (2) capacitive diaphragm sensor gauges (CDG)
hInterfaces with popular MKS Baratron sensor gauges with full scale measurement ranges from
20 mTorr to 10,000 Torr
hGas type and composition independent – no need for lookup tables and conversion factors
hCompact 1/8-DIN enclosure for benchtop or rack panel mounting
hBrilliant Blue LCD readout display
hIntuitive interface makes setting parameters quick and easy
hTwo setpoint output relays for automated control of other equipment
hUser selectable pressure units (Torr, mTorr, mBar, and Pa)
hSerial communication for remote control through DB9 and USB-B ports

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DCM-09232022 - V 1.28
1.4 DIMENSIONAL DRAWINGS
Figure 1 - Dimensional drawings
1.5 PANEL MOUNTING
Standard 1/8 DIN enclosure panel cut out dimensions are 1.772” x 3.622” (45mm x 92mm).
Maximum panel thickness is 3/8” (10mm). To mount the DCM in a panel, unscrew the two 4-40
set screws at the back of the DCM Use a 0.050” hex wrench. Slide the rails out of the slots. Slide
the DCM through the front of the panel, back rst. Slide the two rails back into the slots. Replace
the set screws and tighten until the rails hold the DCM snug in the panel.
Figure 2 - Rails for panel mounting
side rail side rail
set screw set screw

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DCM-09232022 - V 1.2 9
1.6 FRONT PANEL DISPLAY AND CONTROLS
Table 2 - Front panel feature descriptions
ITEM No. DESCRIPTION
1 Ideal Vacuum part number
2 Power on/off button
3 Navigation buttons
4 Select/enter button
5 Navigation direction arrows
6 Menu item or value
7 Current pressure units
8 Gauge channel
9 Saved setpoint indicator
10 Relay on indicator
Figure 3 - Front panel features

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DCM-09232022 - V 1.210
1.9 CUSTOM CABLES
If you are making your own sensor cables, follow these guidelines:
hUse only quality, metal braided, fully shielded, cables between the controller and gauge(s).
hFoil or spiral shielded cables perform worse than braided, and signal degradation may occur.
hCables must be properly grounded at both ends.
hConnectors must have a metal case or be fully shielded.
hThe cable’s shield must contact the case on its entire circumference.
hThe shield wire must be grounded before the signal wires exit the connector.
hThe ground wire should be the absolute minimum length within the connector.
1.7 BACK PANEL POWER AND I/O CONNECTIONS
The back of the DCM has the power, communication, and sensor gauge connections. The DCM
has a built-in universal power supply rated for 100-240 VAC, 50/60 Hz. The DCM accepts a
C13 plug. The RS-232 I/O (multi purpose) connector is a 15 pin D-Sub. It is used for both serial
communication and for the two analog relay outputs. The USB-B connector is used for remote
serial communications and for software updates. The 9 pin D-Sub connector is used to connect
the CDG sensor gauges.
Figure 4 - Back panel connectors
1.8 READY-MADE CABLES AND ADAPTERS
PART # DESCRIPTION
P102063 Sensor cable, connects two gauges to DCM,10 ft., DB9 -M to two DB15-F
P102061 Sensor cable, connects two gauges to DCM, 10 ft. DB9-M to two DB9-F
P1011364 Serial cable, connects remote computer to DCM, 10 ft., DB15-M to DB9-F
P1012796 USB cable, connects remote computer to DCM, 10 ft. USB-A to USB-B
P1012800 DB15-M to terminal block breakout for splitting out relays and RS232 cables
Table 3 - Available ready-made cables and adapters