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UM344-2 INTRODUCTION
September 1995
1.0 INTRODUCTION
This User’s Manual is for the XTC™ Model 344 Smart Temperature Transmitter. It covers both the
Transmitter-Controller and Transmitter only versions.
NOTE
Throughout this Manual the term Transmitter will include both versions
except when the Transmitter-Controller is specifically stated and when
discussing unique Transmitter-Controller features, such as the Controller
function block.
All information needed to bench test, install, configure, system test, and service a transmitter is included in
this User’s Manual. Figure 1-1 shows the basic Model 344. Figure 1-2 shows the two terminal strips for
loop, sensor, display, and test equipment connections.
IMPORTANT
Save this User's Manual for installing, configuring, operating and servicing
a Model 344 transmitter.
1.1 SECTION CONTENTS
Nine sections make up this Manual. A brief description of each section follows.
Section 1, INTRODUCTION, describes each section in this Manual and provides a brief description of
the Model 344 Smart Temperature Transmitter line.
Section 2, XTC COMMUNICATOR (MXC), describes use of the MXC to test, configure, and calibrate a
transmitter.
Section 3, INITIAL TRANSMITTER SETUP, provides procedures to perform a bench test of the
transmitter to ensure proper operation of all functions. Start-up configuration is described here. If desired,
go to Section 5 to perform a complete configuration.
Section 4, INSTALLATION, furnishes specific information for mechanical and electrical installation.
Section 5, ON-LINE AND OFF-LINE OPERATION, describes on-line and off-line configuration, and
the use of the transmitter’s zero and full-scale pushbuttons.
Section 6, CALIBRATION AND MAINTENANCE, provides calibration procedures for analog and
digital modes. It also furnishes preventive maintenance, troubleshooting, and assembly replacement
procedures. A spare and replacement parts list is provided at the back of this Manual.
Section 7, CIRCUIT DESCRIPTION, contains an assembly level circuit description to support transmitter
servicing.