GE TMO2D User manual

GE
Measurement & Control Solutions Gas & Moisture
TMO2D Digital Display
User’s Manual

BERG ENGINEERING & SALES CO., INC.
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
• 

GE
Measurement & Control Solutions
TMO2D Digital Display
User’s Manual
910-084 Rev. D
August 2011

ii

TMO2D Digital Display User’s Manual iii
Preface
Information Paragraphs
•Note paragraphs provide information that provides a deeper understanding of the situation, but is not essential to
the proper completion of the instructions.
•Important paragraphs provide information that emphasizes instructions that are essential to proper setup of the
equipment. Failure to follow these instructions carefully may cause unreliable performance.
•Caution! paragraphs provide information that alerts the operator to a hazardous situation that can cause damage to
property or equipment.
•Warning! paragraphs provide information that alerts the operator to a hazardous situation that can cause injury to
personnel. Cautionary information is also included, when applicable.
Safety Issues
WARNING! It is the responsibility of the user to make sure all local, county, state and national codes,
regulations, rules and laws related to safety and safe operating conditions are met for each
installation.
Auxiliary Equipment
Local Safety Standards
The user must make sure that he operates all auxiliary equipment in accordance with local codes, standards,
regulations, or laws applicable to safety.
Working Area
WARNING! Auxiliary equipment may have both manual and automatic modes of operation. As equipment
can move suddenly and without warning, do not enter the work cell of this equipment during
automatic operation, and do not enter the work envelope of this equipment during manual
operation. If you do, serious injury can result.
WARNING! Make sure that power to the auxiliary equipment is turned OFF and locked out before you
perform maintenance procedures on the equipment.
Qualification of Personnel
Make sure that all personnel have manufacturer-approved training applicable to the auxiliary equipment.
Personal Safety Equipment
Make sure that operators and maintenance personnel have all safety equipment applicable to the auxiliary equipment.
Examples include safety glasses, protective headgear, safety shoes, etc.
Unauthorized Operation
Make sure that unauthorized personnel cannot gain access to the operation of the equipment.

Preface
iv TMO2D Digital Display User’s Manual
Environmental Compliance
Waste Electrical and Electronic Equipment (WEEE) Directive
GE Measurement & Control Solutions is an active participant in Europe’s Waste Electrical and Electronic Equipment
(WEEE) take-back initiative, directive 2002/96/EC.
The equipment that you bought has required the extraction and use of natural resources for its production. It may
contain hazardous substances that could impact health and the environment.
In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural
resources, we encourage you to use the appropriate take-back systems. Those systems will reuse or recycle most of the
materials of your end life equipment in a sound way.
The crossed-out wheeled bin symbol invites you to use those systems.
If you need more information on the collection, reuse and recycling systems, please contact your local or regional
waste administration.
Visit http://www.ge-mcs.com/en/about-us/environmental-health-and-safety/1741-weee-req.html for
take-back instructions and more information about this initiative.

TMO2D Digital Display User’s Manual v
Contents
Chapter 1. Features and Capabilities
1.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Chapter 2. Installation
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.2 Mounting the Electronic Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.3 Wiring Transmitters to the TMO2D Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.3.1 TMO2 Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.3.2 XMO2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.3.3 TMO2-TC Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.3.4 XMTC Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.3.5 RS-232C Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.4 Wiring Other Components to the TMO2D Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Chapter 3. Operation
3.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.2 Powering Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.3 The User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.3.1 The LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
3.3.2 The Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
3.4 RS-232C Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Chapter 4. Basic Programming
4.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.2 Entering Data into the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.2.1 Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.3 Programming the TMO2D Using the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.3.1 Display Navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4.3.2 Menu Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.4 The Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.4.1 Set Time?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4.4.2 Set Date?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
4.4.3 Set Gas/Units/Scaling? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
4.4.4 Set Backlight? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.4.5 Set Contrast? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4.4.6 Set Display? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
4.4.7 Set Communications? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
4.4.8 Set Error Handling? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
4.5 The Outputs Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Contents
vi TMO2D Digital Display User’s Manual
Chapter 4. Basic Programming (cont.)
4.6 The Relays Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
4.6.1 Autocalibration Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.6.2 Alarm Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.7 The Tests Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
4.7.1 DVM Test? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
4.7.2 Output Test?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
4.7.3 Relays Test? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
4.8 The Calibration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
4.8.1 Select Response? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
4.8.2 Select Compensation? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
4.8.3 Gas Calibration? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
4.8.4 Pressure Calibration? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
4.8.5 Auto Cal Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
4.9 The System Log Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
4.9.1 Viewing the System Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
4.9.2 Print System Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Chapter 5. Advanced Programming
5.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
5.2 Entering Data into the Factory Setup Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
5.3 Set Significant Digits? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
5.4 Select Background? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
5.5 Select Tracking?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
5.6 Select Tertiary?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
5.7 Response Parameters? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
5.8 LabCal Outputs? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
5.9 Manual Offset?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
5.10 Change AutoCal Limits? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Chapter 6. Specifications
6.1 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
6.2 Functional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
6.3 Physical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
6.4 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Appendix A. Outline and Installation Drawings
Appendix B. Menu Maps

TMO2D Digital Display User’s Manual 1
Chapter 1. Features and Capabilities
Chapter 1. Features and Capabilities
1.1 Overview
This chapter presents the features and capabilities of the TMO2D Digital Display. It also includes a brief list of GE
transmitters that can be used with the TMO2D Digital Display.
1.2 Introduction
The TMO2D Digital Display offers a number of important features:
•24 VDC 1A maximum power supply for the transmitter.
•A single isolated 0/4–20 mA output, with the option to add a second 0/4–20 mA output.
•Up to four field-programmable alarm contacts with the option of being hermetically sealed for Division 2
applications. Each alarm can be programmed for both a high and a low setpoint, and also for either failsafe or
non-failsafe operation.
•Optional automatic calibration of GE transmitters.
•A fault alarm in the event of either a transmitter problem or a calibration error. The fault alarm can be programmed
for either failsafe or non-failsafe operation.
•A 2-line x 24-character backlit LCD display.
The TMO2D Digital Display supports any of the following GE transmitters:
•XMO2 or TMO2 thermoparamagnetic oxygen transmitters
•XMTC or TMO2-TC thermal conductivity transmitters
•O2X1 oxygen transmitter
Note: For information on specific transmitters, please consult their respective manuals.

Chapter 1. Features and Capabilities
2TMO2D Digital Display User’s Manual

TMO2D Digital Display User’s Manual 3
Chapter 2. Installation
Chapter 2. Installation
2.1 Overview
This chapter describes how to mount and wire the TMO2D Digital Display. It also contains information on connecting
the TMO2D to optional system components. The following topics are discussed:
•Mounting the TMO2D digital display.
•Wiring various GE transmitters to the TMO2D display.
•Connecting to other components.
WARNING! To ensure the safe operation of the TMO2D, it must be installed and operated as described in
this manual. In addition, be sure to follow all applicable safety codes and regulations for
installing electrical equipment in your area. All installation procedures should be performed by
trained service personnel.
2.2 Mounting the Electronic Display
The electronic display comes in six mounting configurations: bench, rack, panel, fiberglass NEMA 4X, 304 stainless
steel NEMA 4X and explosion-proof. (See Appendix A for mounting dimensions).
No special mounting requirements are needed for the display. If you have a bench mount, simply put the display in a
convenient location, connect the wires from the transmitter, and connect the power. If you have a rack or panel mount,
insert the display into the rack or panel, connect the wires from the transmitter, and connect the power. The
weatherproof and explosion-proof models are wall mounted.
IMPORTANT: For compliance with the EU’s Low Voltage Directive (2006/95/EC), 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 unit. The power cord is the main
disconnect device.
2.3 Wiring Transmitters to the TMO2D Display
This section explains how to interconnect the TMO2D display with four different GE transmitters: TMO2, XMO2,
TMO2-TC and XMTC.
2.3.1 TMO2 Transmitter
This section describes how to interconnect the TMO2 and TMO2D. The TMO2 can be wired for internal or external
compensation. Each type of compensation requires a different cable. Before you make any connections, make sure you
have the appropriate cable. Please check the TMO2 calibration sheet to determine if your TMO2 has internal or
external compensation.
•Internal compensation offers a single 4–20mA output for O2 concentration that is compensated for either
background gas or atmospheric pressure variations.
•External compensation offers dual 4–20mA outputs, one for uncompensated O2 concentration and the other for
either background gas or pressure compensated O2 concentration. This type of compensation is normally used with
the TMO2D Display, which can be programmed to provide microprocessor-based background gas or pressure
compensation of the O2 signal.

Chapter 2. Installation
4TMO2D Digital Display User’s Manual
2.3.1 TMO2 Transmitter (cont.)
2.3.1a Cable Requirements:
•Internal compensation: X3(*) or Y3(*) 3-wire 22-AWG cable.
•External compensation: X4(*) 4-wire 22-AWG cable.
The X3(*) and X4(*) cables can be used for distances up to 450 ft (130 m). For longer distances, each cable can be
supplied as 18-AWG that can be located up to 1,050 ft (320 m). If you are using your own cable, refer to Table 1 below
for cable requirements.
For longer cable lengths, consult the factory.
2.3.1b Wiring:
Use the following steps to interconnect the TMO2 to the TMO2D.
1. Route the cable into the TMO2 transmitter through one of the 3/4" conduit holes on the side of the transmitter.
WARNING! Be sure to plug the unused conduit/cable entry hole on the transmitter, in order to meet
specifications and to maintain the appropriate weatherproof or explosion-proof rating.
2. Unplug TB1 on the TMO2 transmitter PC board (PCB) by carefully pulling it directly up without bending the pins
attached to the PCB.
3. Loosen the TB1 side screws and insert the colored wires into the corresponding openings on top of TB1. See
Table 2 below for color-coded pin designations, and Figure 1 on page 5 for the TB1 location.
Table 1: Cable Requirements for TMO2
MAX. CABLE LENGTH CABLE SIZE
Feet Meters AWG Sq. mm
450 130 22 0.35
700 200 20 0.6
1050 320 18 1.0
1700 500 16 1.2
2800 850 14 2.0
4000 1200 12 3.0
Table 2: Wiring the TMO2 with a 4-Wire Cable
Wire Connections Color TMO2 Transmitter TB1 TMO2D Display TB5
Power +24 VDC Red Pin 1 +24 V
Power Return Black Pin 2 RTN
Oxygen White Pin 3 GAS
External Compensation* Blue or Green Pin 4 COMP
*For external compensation, you must use a 4-wire cable to make this connection

TMO2D Digital Display User’s Manual 5
Chapter 2. Installation
2.3.1b Wiring: (cont.)
WARNING! Make sure that the +24 VDC wire (red) is connected to terminal TB1-1. Connecting +24 VDC to
any other other terminal could cause bodily harm. It could also cause damage to the TMO2 PCB,
requiring factory repair.
4. Tighten the side screws, and carefully plug TB1 back onto the TMO2 PCB.
5. Connect the other end of the cable in a similar manner to the TMO2D. Refer to Figure 11 on page 17 for TB1
location.
Figure 1: Wiring Connections to TB1 Block
CAUTION! Do not make any connections to unassigned or unused terminals.
2
3
4
1
+24 V/1 AMP 1
Return 2
Gas 3
Comp. 4
Red
Black
White
Green/Blue
Signal Connections

Chapter 2. Installation
6TMO2D Digital Display User’s Manual
2.3.1 TMO2 Transmitter (cont.)
2.3.1c CE Mark Compliance
IMPORTANT: CE Mark compliance is required only for units used in EU countries.
For CE Mark compliance, you must use shielded cable and connect the shield to the stand off as shown in Figure 2
below. After you make all the necessary electrical connections, seal the unused cable entry holes with standard conduit
plugs or their equivalent.
Note: If you make the modifications as discussed here, your unit will comply with the EMC Directive 2004/108/EC.
Note: For CE compliance, the I/O cables must be shielded. The shields are to be grounded within the TMO2D to the
closest location.Shielded cable is not required when installations include metal conduit.
Figure 2: TMO2 Wiring Connections
2
3
4
1
+24 V/1 AMP 1
Return 2
Gas 3
Comp. 4
Red
Black
White
Green/Blue
Connect Shield
Signal Connections

TMO2D Digital Display User’s Manual 7
Chapter 2. Installation
2.3.2 XMO2 Transmitter
Wiring the XMO2 oxygen transmitter to the TMO2D display requires use of the X4(*) cable, which can support
distances up to 450 ft (130 m). For longer distances, each cable can be supplied as 18-AWG that can be located up to
1,050 ft. (320 m). If you are using your own cable, refer to Table 3 below for cable requirements.
For longer cable lengths, consult the factory.
2.3.2a Wiring:
Use the following steps to interconnect the XMO2 to the TMO2D.
1. Route the 4-wire power/analog output cable through a cable gland as shown in Figure 3 below.
2. After terminating the shield as shown, assemble the three gland pieces together and tighten the gland to secure the
cable and the shield.
IMPORTANT: The cable shield must be terminated in the cable gland as shown in Figure 3 below.
Figure 3: Proper Cable Gland Assembly
3. Route the cable into the XMO2 transmitter through one of the 3/4" conduit holes on the side of the transmitter.
WARNING! Be sure to plug the unused conduit/cable entry hole on the transmitter, in order to meet
specifications and to maintain the appropriate weatherproof or explosion-proof rating.
4. Unplug terminal block TB1/TB2 on the XMO2 transmitter PC board (PCB) by carefully pulling it directly up
without bending the pins attached to the PCB. (See Figure 4 on page 8.)
5. Loosen the TB1 side screws and insert the colored wires into the corresponding openings on top of TB1. See
Table 4 on page 8 for color-coded pin designations.
Table 3: Cable Requirements for XMO2
MAX. CABLE LENGTH CABLE SIZE MAX. CABLE LENGTH CABLE SIZE
Feet Meters AWG Sq. mm Feet Meters AWG Sq. mm
450 130 22 0.35 1,700 500 16 1.2
700 200 20 0.6 2,800 850 14 2.0
1,050 320 18 1.0 4,000 1,200 12 3.0
Cable Shield

Chapter 2. Installation
8TMO2D Digital Display User’s Manual
2.3.2a Wiring: (cont.)
WARNING! Make sure that the +24 VDC wire (red) is connected to terminal TB1-1. Connecting +24 VDC to
any other terminal could cause bodily harm. It could also cause damage to the XMO2 PCB
requiring factory repair.
6. Tighten the side screws, and carefully plug terminal block TB1/TB2 back onto the XMO2 PCB.
7. Connect the other end of the cable in a similar manner to the TMO2D. Refer to Figure 11 on page 17 for the TB1
location.
Figure 4: Wiring Connections to the XM02 TB1/TB2 Block
CAUTION! Do not make any connections to unassigned or unused terminals.
Table 4: Wiring the XMO2 with 4-Wire Cable
Wire Connections Color XMO2 Transmitter TB1 TMO2D Display TB5
Power +24 VDC Red Pin 1 +24 V
Power Return Black Pin 2 RTN
+ mA Signal White Pin 3 GAS
–mA Signal Blue or Green Pin 4 RTN
1
+24VDC Line (red) 1
2
3
4
2
3
–24VDC Return (black)
+4 to 20mA (white)
–4 to 20 mA (green)
RS232 TX (white)
RS232 GND (green)
2
3
4
1
3
External Ground Screw
Cover
Internal Ground Screw
Set Screw
RS232 RX (red) 1
2

TMO2D Digital Display User’s Manual 9
Chapter 2. Installation
2.3.2b CE Mark Compliance
IMPORTANT: CE Mark compliance is required only for units used in EU countries.
For CE Mark compliance, you must use shielded cable and connect the shield to a cable gland (see Figure 3 on page 7).
After you make all the necessary electrical connections, seal the unused cable entry holes with standard conduit plugs
or their equivalent.
Note: If you make the modifications as discussed here, your unit will comply with the EMC Directive 2004/108/EC.
Note: For CE compliance, the I/O cables must be shielded. The shields are to be grounded within the TMO2D to the
closest location. Shielded cable is not required when installations include metal conduit.
Figure 5: XMO2 Wiring Connections
1
+24VDC Line (red) 1
2
3
4
2
3
–24VDC Return (black)
+4 to 20mA (white)
–4 to 20 mA (green)
RS232 TX (white)
RS232 GND (green)
2
3
4
1
3
External Ground Screw
Cover
Internal Ground Screw
Set Screw
RS232 RX (red) 1
2

Chapter 2. Installation
10 TMO2D Digital Display User’s Manual
2.3.3 TMO2-TC Transmitter
Connecting the TMO2-TC thermal conductivity transmitter to the TMO2D requires use of the X3(*) or Y3(*) cables.
The X3(*) cable can be used for distances up to 450 ft (130 m). For longer distances, each cable can be supplied as
18-AWG that can be located up to 1,050 ft (320 m). If you are using your own cable, refer to Table 5 below for cable
requirements.
For longer cable lengths, consult the factory.
2.3.3a Wiring:
Use the following steps to interconnect the TMO2-TC to the TMO2D.
1. Route the cable into the TMO2-TC transmitter through one of the 3/4" conduit holes on the side of the transmitter.
WARNING! Be sure to plug the unused conduit/cable entry hole on the transmitter, in order to meet
specifications and to maintain the appropriate weatherproof or explosion-proof rating.
2. Unplug TB1 on the TMO2-TC transmitter PC board (PCB) by carefully pulling it directly up without bending the
pins attached to the PCB. See Figure 6 on page 11.
3. Loosen the TB1 side screws and insert the colored wires into the corresponding openings on top of TB1. Refer to
Table 6 below for color-coded pin designations.
WARNING! Make sure that the +24 VDC wire (red) is connected to terminal TB1-1. Connecting +24 VDC to
any other terminal could cause bodily harm. It could also cause damage to the TMO2-TC PCB,
requiring factory repair.
Table 5: Cable Requirements for TMO2-TC
MAX. CABLE LENGTH CABLE SIZE
Feet Meters AWG Sq. mm
450 130 22 0.35
700 200 20 0.6
1,050 320 18 1.0
1,700 500 16 1.2
2,800 850 14 2.0
4,000 1,200 12 3.0
Table 6: Wiring the TMO2-TC with 3-Wire Cable
Wire
Connections Color
TMO2-TC
Transmitter
TB1
TMO2D
Display
TB5
Power +24 VDC Red Pin 1 +24 V
Power Return Black Pin 2 RTN
+mA Signal White Pin 3 GAS
No Connection

TMO2D Digital Display User’s Manual 11
Chapter 2. Installation
2.3.3a Wiring: (cont.)
4. Tighten the side screws, and carefully plug TB1 onto the PCB.
5. Connect the other end of the cable in a similar manner to the TMO2D. Refer to Figure 11 on page 17 for TB1
location.
Figure 6: Wiring Connections to TB1 Block
CAUTION! Do not make any connections to unassigned or unused terminals.
2.3.3b CE Mark Compliance
IMPORTANT: CE Mark compliance is required only for units used in EU countries.
For CE Mark compliance, you must use shielded cable and connect the shield to the stand off as shown in Figure 7 on
page 12. After you make all the necessary electrical connections, seal the unused cable entry holes with standard
conduit plugs or their equivalent.
Note: If you make the modifications as discussed here, your unit will comply with the EMC Directive 2004/108/EC.
Note: For CE compliance, the I/O cables must be shielded. The shields are to be grounded within the TMO2D to the
closest location. Shielded cable is not required when installations include metal conduit.
2
3
4
1
+24 V/1 AMP 1
Return 2
Oxygen 3
None 4
Red
Black
White

Chapter 2. Installation
12 TMO2D Digital Display User’s Manual
2.3.3b CE Mark Compliance (cont.)
Figure 7: TMO2-TC Wiring Connections
2.3.4 XMTC Transmitter
Connecting the XMTC thermal conductivity transmitter to the TMO2D requires use of the X4(*) or Y4(*) cables. The
X4(*) cable can be used for distances up to 450 ft (130 m). For longer distances, each cable can be supplied as
18-AWG that can be located up to 1,050 ft (320 m). If you are using your own cable, refer to Table 7 below for cable
requirements.
For longer cable lengths, consult the factory.
Table 7: Cable Requirements for XMTC
MAX. CABLE LENGTH CABLE SIZE
Feet Meters AWG Sq. mm
450 130 22 0.35
700 200 20 0.6
1,050 320 18 1.0
1,700 500 16 1.2
2,800 850 14 2.0
4,000 1,200 12 3.0
2
3
4
1
+24 V/1 AMP 1
Return 2
Oxygen 3
None 4
Red
Black
White
Connect Shield