www.miinet.com
Moore Industries-International, Inc.
- 122 -
User’s Manual
238-741-00K
May 2019
Programmable Smart HART Temperature Transmitter
THZ
3
/ TDZ
3
SECTION 7
Figure 7.2.
When reading critical temperatures in a critical batch processing vessel, fail-over protection allows the
secondary input of the Dual Input TDZ
3
to act as a back-up sensor when the primary sensor fails.
Dual Sensor Input Gives You Expanded Measurement Capability and
Protection
With Dual Input sensors, the THZ
3
and TDZ
3
simplify your operations with advanced features that
give you far more control over your temperature measurements (see Figure 7.2). Each sensor is
individually selectable and programmable.
•
Backup and Fail-Over Protection
allows either of the sensors or inputs to be designated as
the primary measurement, with the secondary input acting as the backup sensor in case of
primary sensor failure.
•
Average and Differential Measurement
allows you to average the two input measurements
or select the differential (A-B or B-A) or absolute differential between the two inputs.
•
High-Select and Low-Select Feature
enables the transmitter to continuously monitor two
separate inputs and designate either the highest or lowest input to represent the analog
output.
•
Dynamic Variable Mapping
permits the user to assign either input or the calculated result of
inputs to any of the four HART variables (PV, SV, TV or QV) that can be read by any HART-
compatible host system.
TD
Z
3
Primary Sensor
Back-up Sensor
