GE XMO2 User manual

GE
Sensing
XMO2
Thermoparamagnetic Oxygen Transmitter
User’s Manual
910-141A5
September 2007
Attention! This manual should be used for XMO2 units with the Terminal User Program (Option D=1 or 2)
only. For XMO2 units with the IDM User Program (Option D = 3 or 4), manual number 910-141B (or a later
revision) must be used.

iii
September 2007
Warranty Each instrument manufactured by GE Sensing, Inc. 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 GE. Fuses and
batteries are specifically excluded from any liability. This warranty is
effective from the date of delivery to the original purchaser. If GE
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 GE determines that the equipment was damaged by misuse,
improper installation, the use of unauthorized replacement parts, or
operating conditions outside the guidelines specified by GE, 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 GE Sensing, Inc. instrument malfunctions within the warranty
period, the following procedure must be completed:
1. Notify GE, 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, GE 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 GE 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, GE 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 GE 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.

v
September 2007
Table of Contents
Chapter 1: Features and Capabilities
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Basic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
The XMO2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
The Sample System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Long Cables (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Power Supply (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
The TMO2D Display/Controller (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Chapter 2: Installation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installing the XMO2 Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installing the Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
A Basic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Mounting the Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Wiring the XMO2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
CE Mark Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Grounding the XMO2 Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Accessing Terminal Block TB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Wiring the Signal Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Connecting to Other Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
The PS5R-C24 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
TMO2D Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
LDP Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
XDP Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
Moisture Image/Monitor Series Analyzers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
System 1 Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
Chapter 3: Startup & Operation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Powering Up the XMO2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Establishing a Sample Gas Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Analog Output Calibration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Pushbutton Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
RS232 Digital Communication Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Changing the 4-20 mA Analog Output Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

September 2007
vi
Table of Contents (cont.)
Chapter 4: Field Calibration
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Factory Calibration Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Enhancing the Factory Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Required Calibration Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Preparing for Field Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
One-Gas Field Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Pushbutton Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
RS232 Digital Communication Method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Two-Gas Field Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Zero Gas Pushbutton Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Span Gas Pushbutton Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Two-Gas RS232 Communication Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Chapter 5: Basic Programming
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Establishing the RS232 Communication Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Programming Keystrokes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Menu Navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Entering the Basic Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Basic Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
QUICK OFFSET Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
VIEW OFFSET Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
QUICK ZERO Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
QUICK SPAN Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
VIEW DRIFT CURVE Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
SET LOW INPUT VALUE Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
SET HIGH INPUT VALUE Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
RESUME Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

vii
September 2007
Table of Contents (cont.)
Chapter 6: General Programming
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Entering the General Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
General Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
CALIBRATE SYSTEM Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
SYSTEM MODE Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
GAS CURVE Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
BACKGROUND GRID Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
PRESSURE CURVE Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-12
PRESSURE GRID Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
PRESSURE/BACKGROUND GRID Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
DRIFTCAL HANDLER Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-23
DONE? Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-35
CALIBRATE RECORDER Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-36
TEST INPUTS Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-37
O2 INPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-37
COMP INPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-38
PRESSURE INPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
RAW BRIDGE INPUT Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-39
OFFSET INPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-39
TEMPERATURE INPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40
BRIDGE POWER INPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40
ANALOG GROUND INPUT Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-41
DONE? Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-41
TEST RECORDER Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-42
ENTER mA Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-42
ENTER UNITS Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-43
SET ERROR HANDLING Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43
TERMINAL Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-44
mA OUTPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44
DONE? Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-46
RESUME Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-46

September 2007
viii
Table of Contents (cont.)
Chapter 7: Advanced Programming
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Entering the Advanced Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Advanced Menu Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
SETUP Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
SET GAS TYPE Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
SET BACKGROUND DISPLAY Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
SET PRESSURE TYPE Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
SET EASY MENU ENTRY Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
DONE Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
CALIBRATE SYSTEM Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
SYSTEM MODE Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
O2 INPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
COMP INPUT Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
GAS VALUE EXP FILTER Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
GAS mV EXP FILTER Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
COMP mV EXP FILTER Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
DRIFTCAL HANDLER Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
DONE Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
CALIBRATE RECORDER Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
SET ERROR HANDLING Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
TERMINAL Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
mA OUTPUT Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28
DONE Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
ERASE RAM Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
RESUME Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30
Chapter 8: Specifications and Factory Data
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Calibration Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Calibration Sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Basic Menu Defaults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
General Menu Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Advanced Menu Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

ix
September 2007
Table of Contents (cont.)
Appendix A: Two Typical Applications
Blanketing Gases in Hydrocarbon Liquid Storage Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
The Problem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Equipment Used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Basic Operating Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Previous Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Reactor Feed Gases in Formaldehyde Production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
The Problem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Equipment Used. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Basic Operating Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Previous Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Appendix B: Outline and Installation Drawings
Outline and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
XMO2 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Interconnection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
RS232 Digital Output Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Digital PCB Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
Digital PCB Schematic (sheet 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6
Digital PCB Schematic (sheet 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
Analog PCB Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Analog PCB Schematic (sheet 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
Analog PCB Schematic (sheet 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-10
Appendix C: Menu Maps
Basic - All Submenus and Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
General - Cal System>System Mode, Gas Curve, Background Grid . . . . . . . . . . . . . . . . . . . . . . . . C-2
General - Calibrate System>Pressure Curve & Pressure Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
General - Calibrate System>Pressure/Background Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
General - Calibrate System>DriftCal Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
General - Cal Recorder, Test Inputs/Recorder & Set Error Handling . . . . . . . . . . . . . . . . . . . . . . . . C-6
Advanced - Setup, Calibrate Recorder, Erase RAM & Resume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
Advanced - Calibrate System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Advanced - Set Error Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9

Chapter 1

Features and Capabilities
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Basic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Features and Capabilities 1-1
September 2007
Introduction This chapter introduces you to the features and capabilities of the GE
Sensing XMO2 Thermoparamagnetic Oxygen Transmitter. The
following specific topics are discussed:
•Basic Features - a brief discussion of the XMO2 Transmitter’s
basic features and capabilities
•Theory of Operation - details on the sensor’s construction and
how the measurements are made
•System Components - a description of the available XMO2
options and the required sample system
Note: The XMO2 technical specifications and ordering information
can be found in Chapter 8, Specifications and Factory Data.
Basic Features The XMO2 Transmitter measures the concentration of oxygen in the
0-100% range in a variety of gas mixtures, and it provides a 4-20 mA
analog output signal that is proportional to the oxygen concentration.
In performing these measurements, the microprocessor-based XMO2
provides automatic oxygen signal compensation for background gas
composition and/or pressure variations. In addition, the XMO2 is
equipped with Fast-Response software, real-time error detection, and
push-button field calibration.
The XMO2 Transmitter offers several unique design features:
•Ultra-stable thermistors and a measuring cell that is temperature-
controlled at 45°C (113°F) provide excellent zero and span
stability, as well as a high tolerance to ambient temperature
variations. Optional measurement cell operating temperatures of
60°C (140°F) and 70°C (158°°F) are available for special
applications.
•The measurement cell design is resistant to contamination and
relatively tolerant of sample gas flow rate variations. As it has no
moving parts, the XMO2 performs reliably under the shock and
vibration found in many industrial applications.
•The XMO2’s unique “bridge-within-a-bridge” measurement
circuit and microprocessor-based operation automatically
compensate the oxygen signal for variations in the magnetic and
thermal properties of the background gas that would otherwise
cause measurement errors.

September 2007
1-2 Features and Capabilities
Basic Features (cont.) •At high oxygen concentrations, changes in atmospheric pressure
have significant effects on the measured oxygen level. However,
the XMO2 provides automatic microprocessor-based atmospheric
pressure compensation of the oxygen signal for these applications.
•The XMO2’s modular construction means that the unit can be
field-calibrated quickly and easily. Also, the plug-in measuring cell
can be replaced with a pre-calibrated spare in just minutes.
•The XMO2 Transmitter, which is available in weatherproof or
explosion-proof packaging, is designed to be installed as close as
possible to the process sample point. It can be located up to 450 ft
(137 m) from the control system, display, or recorder using
standard GE cables.
•An RS232 serial communications interface and a multi-level,
menu-driven User Program provide a convenient means for
calibrating and programming the XMO2
•Internal software algorithms along with user-programmed
calibration data provide compensation of the oxygen signal for
background gas composition, atmospheric pressure, or both
background gas composition and atmospheric pressure.
•GE’s proprietary Fast-Response software provides enhanced
response times to track rapidly changing processes.
•Sophisticated error-checking software with user-programmable
defaults and error limits detects abnormal measurement conditions.
•Pushbutton adjustment of the 4-20 mA analog output zero and
span values is a standard feature with the XMO2.
•A drift calibration routine provides automatic drift compensation
for minor changes in the sensor calibration setting.
•Programmable recalibration is accomplished in the field via a
computer interface, with no potentiometers to adjust.

Features and Capabilities 1-3
September 2007
Theory of Operation The XMO2 measures the concentration of oxygen in a gas mixture by
utilizing the unique paramagnetic properties of oxygen.
As its magnetic susceptibility is approximately 100 times greater than
that of most other common gases, oxygen can be easily distinguished
from these gases based on its behavior in a magnetic field. Also,
oxygen’s magnetic susceptibility varies inversely with temperature.
Therefore, by carefully combining a magnetic field gradient and a
temperature gradient within the XMO2 measuring cell, an oxygen-
containing gas mixture can be made to flow along these gradients.
This induced gas flow is known as a magnetic wind. The intensity of
this magnetic wind depends on the concentration of oxygen in the gas
mixture.
Figure 1-1 below shows a flow schematic for the XMO2 measuring
cell. Permanent magnets within the cell create a magnetic field, while
the cell temperature is controlled at 45°C (113°F) to maintain thermal
equilibrium. In addition, the cell contains two pairs of highly-stable,
glass-coated thermistors. One thermistor of each pair located inside
the magnetic field and the other thermistor of each pair located
outside the field. Because the thermistors are electrically heated, a
temperature gradient is thus created within the magnetic field.
Figure 1-1: Measuring Cell Flow Schematic
Induced Gas
Flow
Magnetic
Field
Upper
Measurement
Chamber
Lower
Flow-Through
Chamber
Sample
Inlet Sample
Outlet
Wind
Receiving
(Warmed)
Thermistor
Wind
Generating
(Cooled)
Thermistor

September 2007
1-4 Features and Capabilities
Theory of Operation
(cont.)
Figure 1-2 below shows the arrangement of the two thermistor pairs.
Figure 1-2: Arrangement of the Thermistor Pairs
A small portion of the sample gas flow is allowed to diffuse from the
lower chamber into the upper chamber of the measurement cell. If the
sample gas contains a paramagnetic gas such as oxygen, it is attracted
to the magnetic field, causing the sample gas pressure to become
locally higher in the center of the chamber. At the same time, the
sample gas pressure is slightly lower near the thermistors because the
high thermistor temperature causes the paramagnetic properties of
oxygen to decrease. This slight gradient in sample gas pressure causes
the sample gas to flow outward from the center of the magnetic field
and over the thermistors. As a result, the inner, wind-generating
thermistors decrease in temperature as they lose heat to the magnetic
wind. This causes a temperature gradient between the cooler inner
thermistors and the warmer outer thermistors.
Figure 1-3 on page 1-5 shows how the two thermistor pairs are
connected in series in an electronic bridge circuit. The bridge circuit
becomes unbalanced as the electrical resistance of the thermistors
changes with temperature. This circuit imbalance causes a voltage
drop, which is proportional to the oxygen concentration in the gas
being measured, to appear across the bridge circuit.
Magnetic Field Wind Generating
(Cooled)
Thermistors
Induced Gas Flow Induced Gas Flow
Wind Receiving
(Warmed)
Thermistors

Features and Capabilities 1-5
September 2007
Theory of Operation
(cont.)
Figure 1-3: Thermistor Bridge Circuit
As the background gases that comprise the balance of an oxygen-
containing gas mixture change, the magnetic and thermal properties
of the gas mixture also change. This affects the accuracy and response
of any paramagnetic oxygen analyzer. To compensate for such
variations, the XMO2 has a unique “bridge-within-a-bridge” design.
The oxygen measuring bridge circuit described on the previous page
is itself one arm of another compensation bridge circuit that maintains
the oxygen bridge at a constant temperature as background gas
composition changes. The electrical power change necessary to keep
the oxygen bridge at constant temperature is a function of the thermal
properties of the background gas. Therefore, this power fluctuation
provides a signal that is related to the thermal conductivity of the
background gas. That signal is then used to reduce the effects of the
background gas variation on the oxygen span point measurement.
In addition to maintaining a constant oxygen bridge temperature, the
XMO2 microprocessor compensates for any zero point shift in the
oxygen bridge circuit output caused by background gas changes.
Finally, the bridge circuit voltage is further adjusted for variations in
background gas composition and/or atmospheric pressure by internal,
microprocessor-based compensation algorithms. The compensated
signal is then amplified and converted to a 4-20 mA analog output
that is proportional to the concentration of oxygen in the gas mixture.
R1
W1W2
R2
W1, W2=Wind Generating (Cooled) Thermistors
R1, R2=Wind Receiving (Warmed) Thermistors
Zero Adjust
VO2
Vcomp

September 2007
1-6 Features and Capabilities
System Components The basic XMO2 measurement system consists of an XMO2
Transmitter mounted in a Sample System. The sample system is
mandatory, and can either be provided by GE or constructed
according to our recommendations.
The XMO2 Transmitter The XMO2 Transmitter is self-contained, consisting of the oxygen
sensor and associated electronics. It requires a 24 VDC power input
@1.2 A maximum at power-up, and it provides a 4-20 mA analog
output signal that is proportional to the oxygen concentration of the
sample gas and has fully programmable zero and span points. Also
provided is an RS232 digital output for oxygen concentration,
background gas, and atmospheric pressure signals. Programming, and
calibration of the unit may also be performed via this interface.
All XMO2 transmitters include a 10 ft (3 m), 4-conductor cable for
connecting the power input and the 4-20 mA analog output. Optional
XMO2 accessories available from GE include:
•power/analog output cable lengths of up to 450 ft (137 m)
•24 VDC power supply (Model PS5R-C24)
•3-conductor cable with a DB9 (male or female) or DB25 (male or
female) connector for connecting the XMO2’s RS232 digital
output to external devices
The XMO2 is designed to be installed in a sample system as close as
possible to the process sample point. Thus, it is available in two
environmental packages:
•Weatherproof: NEMA-4X, IP66
•Explosion-proof: Class I, Groups A, B, C, D, Div. 1,
Cenelec EEx d II C T6, with gas inlet and outlet flame arrestors
The XMO2 Transmitter, which is shown in Figure 1-3 on page 1-7,
can be configured for the following standard oxygen ranges:
0 to 1% 0 to 25%
0 to 2% 0 to 50%*
0 to 5% 0 to 100%*
0 to 10% 80 to 100%*
0 to 21% 90 to 100%*
*Pressure compensation is required

Features and Capabilities 1-7
September 2007
The XMO2 Transmitter
(cont.)
Figure 1-4: The XMO2 Transmitter
The standard XMO2 transmitter maintains the measurement cell at an
operating temperature of 45°C (113°F). An optional 60° (140°F) or
70°C (158°F) cell operating temperature is available upon request.
Note: The 60° (140°F) or 70°C (158°F) cell operating temperatures
should be selected only when necessary, as the higher cell
operating temperature results in reduced sensitivity.
Inlet
Flame Arrestor
Flame Arrestor
Outlet

September 2007
1-8 Features and Capabilities
The Sample System A sample system is mandatory for use with the XMO2 transmitter.
The specific design of the sample system depends on the conditions
of the sample gas and the requirements of the application. At a
minimum, the sample system should include a sample gas flowmeter
and a gas flow regulator valve.
In general, the sample system must deliver a clean, representative
sample of the gas mixture to the XMO2 transmitter at a temperature,
pressure, and flow rate that are within acceptable limits. The standard
XMO2 transmitter sample gas conditions are as follows:
•-20° to +40°C (-4° to +104°F), at the standard measurement cell
operating temperature of 45°C (113°F)
•atmospheric pressure
•1.0 SCFH (500 cc/min) flow rate
GE offers sample systems for a wide variety of applications. A typical
sample system for use with the XMO2 transmitter is shown in
Chapter 2, Installation. For assistance in designing your own sample
system, please consult the factory.
IMPORTANT: ATEX compliance with EN 50104 requires both:
•Fast Response calibration of the XMO2 transmitter
•Pressure Compensation of the XMO2 or constant control of the
sample system pressure.
Long Cables (optional) GE provides a standard 10 ft (3 m), 4-conductor, color-coded cable
with each XMO2 to connect to the power input and the analog output.
Optional cables are available in lengths up to 450 ft (137 m) as P/N
X4(*), where * specifies the length in feet. For longer cables or to use
your own cable, refer to Chapter 2, Installation, for
recommendations.
Power Supply (optional) The XMO2 requires 24 VDC input power at a maximum start-up
current of 1.2 A. The GE PS5R-C24 power supply may be used to
convert 100-240 VAC to the required 24 VDC.
The TMO2D Display/
Controller (optional)
The GE TMO2D Display/Controller provides a two-line x 24-
character back-lit LCD display for the XMO2’s 4-20 mA analog
output signal. It also permits display and option programming via its
keyboard. Additional features include: recorder outputs, a real time
clock, alarm relays, and relays for driving sample system solenoids
for automatic zero and span calibration. For more information on the
TMO2D, please consult the factory.

Chapter 2

Installation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installing the XMO2 Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installing the Sample System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Wiring the XMO2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Connecting to Other Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Installation 2-1
September 2007
Introduction This chapter describes how to install the XMO2 transmitter and its
sample system. It also contains information on connecting optional
system components. Installation of the XMO2 system consists of
three basic steps:
1. installing the XMO2 transmitter in the sample system (If you
purchased your sample system from GE, this step has already been
done for you.)
2. mounting, plumbing, and wiring the sample system
3. making wiring connections for power input, 4-20 mA analog
output, RS232 digital output, and optional external devices
Installing the XMO2
Transmitter
Note: This section applies only if the XMO2 transmitter has not
already been installed in the sample system at the factory.
The sample system must deliver a clean, representative gas sample to
the XMO2 at the proper temperature, pressure and flow rate. This
usually means a clean, dry gas sample that is free of solid and liquid
particulates and is delivered at atmospheric pressure, a temperature
no greater than 40°C (104°F), and a flow rate of approximately 1.0
SCFH (500 cc/min). A typical sample system for the XMO2 might
include an inlet gas flow regulating needle valve, a sample gas flow
meter, and a pressure gauge.
Note: Because factory calibration of the XMO2 is done at
atmospheric pressure and at a flow rate of 1.0 SCFH,
operation of the XMO2 at other pressures and/or flow rates
requires a field recalibration to ensure optimum accuracy.
To install the XMO2 transmitter in the sample system, complete the
following steps:
1. Select a location in the sample system that provides at least 9 in.
(230 mm) of clearance above the top cover of the XMO2 for
access to the interior of the transmitter’s enclosure.
2. Mount the XMO2 transmitter in the sample system via its two
mounting holes. Be sure that the transmitter is upright and is level
to within ±15°.
3. Use 1/4” stainless steel tubing to connect the sample system Inlet
and Outlet fittings to the corresponding XMO2 ports.
!WARNING!
For explosion-proof units, be sure to conform to all
safety and electrical code requirements.