Chapter 2. Installation; Overview; Mounting The Electronic Display; Wiring Transmitters To The Tmo2D Display - GE TMO2D User Manual

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 O
background gas or atmospheric pressure variations.
•
External compensation offers dual 4–20mA outputs, one for uncompensated O
either background gas or pressure compensated O
the TMO2D Display, which can be programmed to provide microprocessor-based background gas or pressure
compensation of the O
TMO2D Digital Display User's Manual
signal.
2
concentration that is compensated for either
2
concentration. This type of compensation is normally used with
2
Chapter 2. Installation
concentration and the other for
2
3