Panametrics XDP-H2 User manual

panametrics.com 910-204 Rev. B2
July 2022
XDP-H2
Panametrics Explosion-Proof Display Package
User’s Manual
Attention! This manual is for use with XDP units with H2 software (E=2) only.

XDP-H2 User’s Manual 3
Warranty
Warranty
Each instrument manufactured by Panametrics is warranted to be free from defects in material and workmanship.
Liability under this warranty is limited to restoring the instrument to normal operation or replacing the instrument, at
the sole discretion of Panametrics. Fuses and batteries are specifically excluded from any liability. This warranty is
effective from the date of delivery to the original purchaser. If Panametrics determines that the equipment was
defective, the warranty period is:
•one year for general electronic failures of the instrument
•one year for mechanical failures of the sensor
If Panametrics determines that the equipment was damaged by misuse, improper installation, the use of
unauthorized replacement parts, or operating conditions outside the guidelines specified by Panametrics, the repairs
are not covered under this warranty.
The warranties set forth herein are exclusive and are in lieu of all other warranties whether
statutory, express or implied (including warranties of merchantability and fitness for a particular
purpose, and warranties arising from course of dealing or usage or trade).
Return Policy
If a Panametrics, Inc. instrument malfunctions within the warranty period, the following procedure must be
completed:
1. Notify Panametrics, giving full details of the problem, and provide the model number and serial number of the
instrument. If the nature of the problem indicates the need for factory service, Panametrics will issue a RETURN
AUTHORIZATION number (RA), and shipping instructions for the return of the instrument to a service center will be
provided.
2. If Panametrics instructs you to send your instrument to a service center, it must be shipped prepaid to the
authorized repair station indicated in the shipping instructions.
3. Upon receipt, Panametrics will evaluate the instrument to determine the cause of the malfunction.
Then, one of the following courses of action will then be taken:
•If the damage is covered under the terms of the warranty, the instrument will be repaired at no cost to the owner
and returned.
•If Panametrics determines that the damage is not covered under the terms of the warranty, or if the warranty has
expired, an estimate for the cost of the repairs at standard rates will be provided. Upon receipt of the owner’s
approval to proceed, the instrument will be repaired and returned.

Warranty
4 XDP-H2 User’s Manual
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XDP-H2 User’s Manual 5
Contents
Chapter 1. General Information
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2 Basic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.3 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.4 A Typical Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.4.1 Alarm Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Chapter 2. Installation
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.2 Choosing an Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.3 Mounting the XDP System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.3.1 Mounting the XDP Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.3.2 Mounting the Remote Transmitter/Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.3.3 Wiring the XDP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.3.4 Wiring The Remote Transmitter - J6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.3.5 Wiring The XDP Alarm Relays - J3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.3.6 Wiring the XDP Analog Output - J8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.3.7 Wiring the Optional Serial Port - J4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
2.3.8 Wiring The Line Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5
Chapter 3. Operation
3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.2 Preventing Common Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.3 Cleaning the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.4 Powering Up the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.4.1 The Digital Display Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.4.2 Initial Screen Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
3.4.3 Starting the Sample Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
3.5 Accessing the User Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
3.5.1 Exiting the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
3.5.2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Chapter 4. Setup and Calibration
4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.2 Selecting the Active Curve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.3 Switching Display Windows. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4.4 Adjusting the Display Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4.5 Setting the Display Backlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
4.6 Setting the System Fault Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
4.7 Setting Up the System Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
4.7.1 Choosing the System Analog Output Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
4.7.2 Setting the Zero Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
4.7.3 Setting the Span Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.7.4 Testing the System Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.7.5 Setting the Zero Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
4.7.6 Setting the Span Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4.8 Setting Up the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4.9 Other Opt Menu Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.9.1 Lock Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.9.2 Lock All . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4.9.3 Versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
4.10 Calibrating the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4.10.1 Initial Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4.10.2 Performing a Zero Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4.10.3 Performing a Span Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4.10.4 Viewing and Clearing the Cal Drift. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Contents
6 XDP-H2 User’s Manual
Chapter 5. Advanced Programming
5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.2 Programming Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.3 Setup-Level Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.3.1 Configuring the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5.3.2 Accessing the Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3.3 Configuring the 4-20 mA XDP Analog Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.3.4 Configuring the Low and Low Low Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
5.3.5 Testing the XDP Alarm Relays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
5.4 Factory-Level Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
5.4.1 Entering the Sensor Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
5.4.2 Configuring the 4-20 mA Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13
5.4.3 Entering Factory Calibration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14
5.4.4 Loading Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16
5.5 Exiting the User Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
Chapter 6. XDP Specifications
6.1 Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
6.2 Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
6.3 Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.4 Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.5 Transmitter Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Appendix A. CE Mark Compliance
A.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.2 EMC Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.3 LVD Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Appendix B. Additional Wiring Connections
B.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
B.2 Connecting the System Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
B.2.1 Wiring the System Analog Output - J5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
B.2.2 Wiring The System Alarm Relay - J2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
B.3 XDP Alarm Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
Appendix C. Menu Maps

XDP-H2 User’s Manual 1-1
Chapter 1. General Information
Chapter 1. General Information
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Basic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
System Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
A Typical Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Chapter 1. General Information
1-2 XDP-H2 User’s Manual
1.1 Introduction The XDP Explosion-proof Display Package has been designed as one component of a
system that monitors the composition of a binary gas. The second component is a
remotely-mounted sensor/transmitter, such as the Panametrics Model TMO2-TC or
similar device.
Note: Refer to the documentation supplied with the specific transmitter used for
complete information on the transmitter.
The XDP performs the following basic functions:
• supplies the 24 VDC required to power the transmitter
• accepts and processes the 4-20 mA output from the transmitter
• shows a selected process parameter on a digital display
• provides a user interface for programming the system
• provides user-configurable alarm relays and analog outputs
The XDP is wall-mounted via its integral mounting plate and it is connected to the
transmitter with an electrical conduit. Both components can be rated for use in Class
I, Division 1, Groups B, C & D hazardous environments.
1.2 Basic Features The XDP incorporates the following basic features:
• wall-mountable, explosion-proof enclosure
• 40 W universal VAC power input
• 24 VDC power output
• 4-20 mA analog input
• high-resolution, backlit LCD digital display
• infrared (“through-the-glass”) programming keypad
• a Windows-like graphical user interface
• three built-in gas measurement ranges
• two isolated 4-20 mA analog outputs
• four general-purpose alarm relays
• built-in error reporting diagnostics
See Figure 1 on page 3 for a picture of the XDP.

XDP-H2 User’s Manual 1-3
Chapter 1. General Information
Figure 1: The XDP
1.3 System
Overview
In a binary gas mixture, the transmitter measures the concentration of a target gas
in a known background gas (see the documentation for the transmitter for a
discussion of the specific technology employed by the sensor mechanism). To be
suitable for use in an XDP system, the transmitter must meet the following
requirements:
• powered by the +24 VDC output from the XDP
• output a 4-20 mA signal to the XDP analog input
• meet all performance specifications for the system
• suitable for use in the specified environment
The XDP accepts the 4-20 mA analog input from the transmitter and processes the
information. Then, the results are displayed on the built-in digital display window. In
addition, the data may be output as a linear analog signal to drive a data recorder
and/or controller device.

Chapter 1. General Information
1-4 XDP-H2 User’s Manual
1.4 A Typical
Application
Heavy-duty electricity generators are typically cooled with hydrogen gas to
maximize generator efficiency. The hydrogen gas level is continuously monitored, at
both ends of the generator. An XDP system with a remote transmitter is ideally suited
for this service.
During normal operation, the hydrogen gas must be monitored for the presence of
air, which would create an explosion hazard. Then, in preparation for a maintenance
shutdown, the hydrogen gas is purged with carbon dioxide gas before the chamber
is opened up and exposed to air. At the conclusion of the maintenance work, the
chamber is resealed and the air is purged with carbon dioxide. Finally, the carbon
dioxide is purged with hydrogen prior to resuming operation. Thus, at various times,
the following gas mixtures must be monitored:
• 70-100% hydrogen in air
• 0-100% hydrogen in carbon dioxide
• 0-100% air in carbon dioxide
Panametrics offers several transmitters that are well suited for operation in all of
these environments, and the XDP has been designed to permit quick and easy
switching between the analysis and display of these three gas mixture inputs.
1.4.1 Alarm Settings When factory-configured for this typical application, the XDP’s built-in alarms are set
up as follows:
•XDP Normal Alarm: failsafe, tripped if:
a. active curve is not H2/AIR
b. field calibration is in progress
c. any built-in error condition occurs
d. power to the XDP is interrupted
•XDP Fault Alarm: failsafe, tripped if:
while in measurement mode:
a. any error condition, except Low H2 or Low-Low H2, occurs
b. power to the XDP is interrupted
or
while in calibration mode:
a. ADC is out of range, mA input under/over range error occurs
b. power to the XDP is interrupted
•Low Alarm: field-programmable, failsafe or non-failsafe, tripped in H2/AIR
measurement mode by:
a. H2 level below 85% setpoint (programmable)
•Low-Low Alarm: field-programmable, failsafe or non-failsafe, tripped in H2/AIR
measurement mode by:
a. H2 level below 80% setpoint (programmable)

XDP-H2 User’s Manual 2-1
Chapter 2. Installation
Chapter 2. Installation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Choosing an Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Mounting the XDP System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
Wiring the XDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Chapter 2. Installation
2-2 XDP-H2 User’s Manual
2.1 Introduction This chapter provides a general description of the XDP Explosion-proof Display
Package and gives directions on how to install and wire the unit for proper operation.
IMPORTANT: The XDP requires an external power disconnect device such as a switch
or circuit breaker. The disconnect device must be marked as such,
clearly visible, directly accessible, and located within 1.8 m (6 ft) of the
unit.
Be sure to observe all installation limits and precautions described in this chapter.
Pay particular attention to the ambient temperature range of –10° to +60°C (14° to
+140°F) specified for the instrument.
Proceed to the next page to begin the installation.
2.2 Choosing an
Installation Site
All environmental and installation factors should have been discussed with a
Panametrics applications engineer or field sales person at the time the XDP was
ordered. Thus, the equipment should be suited to the application and the planned
installation site. However, before installing the unit, read these guidelines to verify
that the best installation site has been chosen for optimum instrument accuracy
and reliability.
• Make sure that the XDP and transmitter enclosures are suitable for the
environmental conditions at the installation site.
• Install the system in a location with little or no vibration.
• Mount the transmitter in accordance with the instructions provided in its
accompanying documentation.
• Make sure the ambient temperature at the XDP installation site is
–10° to 60°C (14° to 140°F).
• Use a suitable electrical conduit to interconnect the remote transmitter and the
XDP enclosure.
• Use a suitable sample system between the gas source and the sample inlet of
the transmitter.
• Observe all normal safety precautions. Specifically, do not exceed the maximum
pressure and temperature ratings of the transmitter or the sample system.
• Install the XDP system in a location that provides ready access for programming,
testing, and servicing the unit.
• Protect all cables from excessive physical strain (bending, pulling, twisting, etc.).
Do not subject the cables to temperatures above 65°C (149°F) or below –50°C (–
58°F).
• Be sure that the line voltage used at the planned installation site corresponds to
the factory preset line voltage rating for the XDP.
WARNING! To ensure safe operation of the XDP, the unit must be
installed and operated as described in this manual.
Also, be sure to follow all applicable local safety codes
and regulations for installing electrical equipment. In
addition, all procedures should be performed by trained
service personnel.

XDP-H2 User’s Manual 2-3
Chapter 2. Installation
2.3 Mounting the
XDP System
This section explains how to mount the XDP system components and the
transmitter/sample system at the installation site.
IMPORTANT: The XDP requires an external power disconnect device such as a switch
or circuit breaker. The disconnect device must be marked as such,
clearly visible, directly accessible, and located within 1.8 m (6 ft) of the
unit.
IMPORTANT: This symbol indicates Caution - risk of electric shock:
2.3.1 Mounting the XDP
Enclosure Refer to Figure 2-9 on page 7, and complete the following steps to mount the XDP
enclosure:
1. Select a flat surface on a vertical wall or instrument panel with sufficient space
to hold the XDP enclosure.
2. Using the mounting dimensions shown in Figure 2-9 on page 7, locate and
prepare four (4) mounting holes or two (2) horizontal mounting rails on the
vertical surface.
3. Secure the XDP enclosure to the mounting surface with four (4) sets of mounting
hardware. Be sure that the enclosure is in a vertical position, with the display
window at the top.
2.3.2 Mounting the
Remote
Transmitter/Samp
le System
Mount the remote transmitter in accordance with the instructions in its
accompanying documentation.
Note: Most Panametrics transmitters may be located up to
2,800 ft (850 m) from the XDP enclosure.
To provide reliable and accurate results, the transmitter is often installed in a
suitable sample system. The sample system is designed to deliver a clean,
representative gas sample to the inlet of the transmitter at the proper temperature,
pressure and flow rate.
Note: A suitable sample system may be ordered directly from Panametrics. The
sample system would be supplied fully assembled on a flat plate with four
(4) mounting holes. See the sample system and/or transmitter manuals for
more details.
2.3.3 Wiring the XDP To completely wire the XDP, connect the following items:
• analog output from transmitter (J6)
• +24 VDC input to transmitter (J6)
• XDP alarm relays (J3)
• XDP analog output (J8)
• serial port (J4) - optional
• line power (J1)
Note: See Appendix B, Additional Wiring Connections, for a discussion of
connections to terminal blocks J2, J5, and J7.
Refer to the wiring diagram shown in Figure 2-10 on page 8, while completing the
instructions presented in this section.
WARNING! To meet CE Mark requirements, install all cables as
described in Appendix A,
CE Mark Compliance .

Chapter 2. Installation
2-4 XDP-H2 User’s Manual
IMPORTANT: The XDP requires an external power disconnect device such as a switch
or circuit breaker. The disconnect device must be marked as such,
clearly visible, directly accessible, and located within 1.8 m (6 ft) of the
unit.
Remove the two side covers on the XDP enclosure. This is accomplished by loosening
the set screw in the cover and using a long screwdriver or rod in the slots provided to
unscrew the cover. Proceed to the appropriate sub-section to wire each of the
terminal blocks.
Note: A long, pin-like, plastic wiring tool is stored inside the XDP enclosure. Insert
the tool into the connector pin being wired to open the hole, and then insert
the wire. When the tool is removed, the wire is clamped into the connector.
2.3.4 Wiring The Remote
Transmitter - J6 Terminal block J6 contains the analog signal and loop power connections for the
remote transmitter. To wire the transmitter, complete the following steps:
1. Connect the XDP to the transmitter as follows:
Note: Refer to the transmitter manual for details on wiring the transmitter’s
terminal block(s).
a. Connect pin #1 to the positive terminal of the analog output from the transmitter.
b. Connect pin #2 to the +24 VDC loop power input on the transmitter.
c. Connect pin #3 to the return connection of the analog output from the
transmitter.
Proceed to the next section to continue wiring the XDP.
2.3.5 Wiring The XDP
Alarm Relays - J3 Terminal block J3 contains connections for the XDP alarm relays. To wire these
alarms, complete the following steps:
Note: A failsafe alarm is wired to the normally-closed (NC) contacts, while a
non-failsafe alarm is wired to the normally-open (NO) contacts.
1. Connect the Normal alarm as follows (this alarm is factory-configured for
failsafe operation):
a. Connect pin #1 (NC) to the alarm device input.
b. Connect pin #2 (C) to the alarm device return.
c. Pin #3 (NO) is not used for fail-safe operation
2. Connect the XDP Fault alarm as follows (this alarm is factory-configured for
failsafe operation):
a. Connect pin #4 (NC) to the alarm device input.
b. Connect pin #5 (C) to the alarm device return.
c. Pin #6 (NO) is not used for fail-safe operation
3. Connect the XDP Low alarm as follows (this alarm is factory-configured in
failsafe mode, but may be reconfigured):
a. Connect pin #7 (NC) to the alarm device input.
b. Connect pin #8 (C) to the alarm device return.
c. Pin #9 (NO) is not used for fail-safe operation.
WARNING! To ensure safe operation of the XDP, the unit must be
installed and operated as described in this manual.
Also, be sure to follow all applicable local safety codes
and regulations for installing electrical equipment. In
addition, all procedures should be performed by trained
service personnel.

XDP-H2 User’s Manual 2-5
Chapter 2. Installation
4. Connect the XDP Low-Low alarm as follows (this alarm is factory-configured in
failsafe mode, but may be reconfigured):
a. Connect pin #10 (NC) to the alarm device input.
b. Connect pin #11 (C) to the alarm device return.
c. Pin #12 (NO) is not used for fail-safe operation.
Proceed to the next section to continue wiring the XDP.
2.3.6 Wiring the XDP
Analog Output - J8 Terminal block J8 contains connections for the XDP’s analog output. To wire this
analog output, complete the following steps:
1. Connect pin #1 to positive input on the analog output device.
2. Connect pin #2 to the negative input on the analog output device.
3. Pin #3 has no connection.
Proceed to the next section to continue wiring the XDP.
2.3.7 Wiring the
Optional Serial Port
- J4
Terminal block J4 contains connections for the XDP’s serial port. The connections on
terminal block J4 are optional, in that they are not required for proper operation of
the analyzer. To wire the serial port, complete the following steps:
Note: This connection may be made with a Panametrics #704-668 cable. If this
cable is used, pin #1 is the red wire, pin #2 is the white wire, and pin #3 is
the green wire.
1. Connect pin #1 to the transmit pin on the computer.
2. Connect pin #2 to the receive pin on the computer.
3. Connect pin #3 to the return pin on the computer.
Proceed to the next section to continue wiring the XDP.
2.3.8 Wiring The Line
Power The terminal block on the power supply board contains connections for the line
power to the XDP. Make these connections only with wire that meets the following
specifications:
• individual conductor gauge of 18 AWG minimum (maximum current capacity of
12 Amps)
• voltage rating of 600 Volts minimum
• insulation temperature rating of 105°C minimum
Refer to Figure 2-10 on page 8 and complete the following steps:
1. Attach a cable or conduit with the three line power conductors to a cable entry
port on the electronics enclosure.
WARNING! The rating of the wire insulation must be at least 15°C
above the expected ambient temperature.
WARNING! Before proceeding with the section, verify that the line
power has been turned off at the external disconnect
device.
CAUTION! Be sure that the input voltage to the XDP complies with
the value specified at the time of purchase.

Chapter 2. Installation
2-6 XDP-H2 User’s Manual
2. Connect the line power leads to terminal block J1 as follows:
a. Connect the line power lead (black) to pin L on the power connector.
b. Connect the neutral power lead (white) to pin N on the power connector.
c. Connect the ground power lead (green) to the chassis ground screw shown
in Figure 2-10 on page 8.
3. Make sure that the factory-installed jumper wire at pin G on the power
connector is secure.
This completes the wiring of the XDP. Proceed to Chapter 3, Operation, for
instructions on using the meter.

XDP-H2 User’s Manual 2-7
10.54
(268)
8.23 (209)
6.00 (152)
8.00 (203)
9.14 (232)
5.60
(142)
4.99 (127)
3.00
(76)
5.00
(127)
NOTE: DIMENSIONS ARE IN INCHES (MILLIMETERS).
Figure 2-1: XDP Outline and Mounting Dimensions

XDP-H2 User’s Manual 2-8
This unit requires an external power
disconnect device such as a switch or
circuit breaker. The disconnect device
must be marked as such, clearly visible,
directly accessible and located within 1.8
m (6 ft) of the XDP.
XDP ALARMS - J3
DescriptionPin No.
NOTE:
1
2
3
4
5
6
7
8
9
10
11
12
Normal (NC)
Normal (C)
Normal (NO)
Fault (NC)
Fault (C)
Fault (NO)
Low (NC)
Low (C)
Low (NO)
Low-Low (NC)
Low-Low (C)
Low-Low (NO) Return (RTN)
Receive (RX)
Transmit (TX)
Description
3
2
1
Pin No.
RS232/485 COMM - J4
Pin No.
1
2
3(See Appendix B)
required here.
No connections
Description
SYSTEM ANALOG OUTPUT - J5
Description
SYSTEM FAULT ALARM - J2
1
2
3
Pin No.
Description
11
12
10
9
8
7
3
2
1
Pin No.
6
5
4
OTHER CONNECTIONS - J7
XDP ANALOG OUTPUT - J8
Pin No.
3
2
1
No Connection
Return (RTN)
Analog Output (AOUT)
DescriptionDescription
Analog Input (IN)
Power Output (+ 24)
Return (RTN)
TRANSMITTER CONNECTIONS - J6
Pin No.
1
2
3
LEFT SIDE CONNECTIONS RIGHT SIDE CONNECTIONS
Color*
Red
White
Green
[* wire colors for Panametrics
# 704-668 serial cable]
No connections
required here.
(See Appendix B)
No connections
required here.
(See Appendix B)
Ground Terminal
Description
Line Input (100-240 VAC)
Line Neutral
Line Ground
AC POWER INPUT - TB1
Pin No.
G
N
L
Voltag e
Size
Type
Rating
Factory Jumper
1.25 Amp
5 x 20 mm
T
250 V
FUSE
Figure 2-2: XDP Wiring Connections (ref. dwg #702-363)

XDP-H2 User’s Manual 3-1
Chapter 3. Operation
Chapter 3. Operation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Preventing Common Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Cleaning the Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Powering Up the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Accessing the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Exiting the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

Chapter 3. Operation
3-2 XDP-H2 User’s Manual
3.1 Introduction The XDP is an easily operated monitoring device. Make sure that the system has
been installed in accordance with the instructions given in Chapter 2, Installation,
before applying power. This chapter includes discussions of the following topics:
• preventing common problems
• powering up the system
• programming the meter
• taking measurements
3.2 Preventing
Common
Problems
The complexity of accurately measuring the target gas mixtures dictates that some
basic precautions be observed in using the XDP. Failure to observe these simple
procedures is often the cause of some common problems. Compliance with the
following points will help to eliminate such problems:
• Calibration of the analyzer should be checked approximately every 2–6 months,
depending upon the specific application (see “Calibrating the System” on
page 17).
• Never use thread sealant on any connection in the sample gas flow path. Thread
sealant emits combustible vapors that can cause reading errors.
• The infrared keypad may not function properly if direct sunlight strikes the face
of the XDP or if the XDP is installed in an environment that has a high infrared
content. To minimize such factors, provide suitable shading during installation.
3.3 Cleaning the
Enclosure
If the glass window or the case of the XDP becomes soiled, use a soft cloth
dampened with water for cleaning. Never use solvents or detergents to clean the
XDP.
3.4 Powering Up the
System
Check the wiring connections and close both the XDP and transmitter enclosures
before applying power. Energize the external disconnect device to power up the XDP.
Allow the transmitter to warm up for at least thirty minutes, before taking
measurements.
IMPORTANT: The XDP requires an external power disconnect device such as a switch
or circuit breaker. The disconnect device must be marked as such,
clearly visible, directly accessible, and located within 1.8 m (6 ft) of the
unit.
3.4.1 The Digital Display
Window The digital display window at the top of the XDP enclosure includes the components
shown in Figure 2 below.
WARNING! To ensure safe operation of the XDP, it must be installed
and operated as described in this manual. In addition,
be sure to follow all applicable local safety codes and
regulations for installing electrical equipment.