www.miinet.com
Moore Industries-International, Inc.
- 121 -
User’s Manual
238-741-00K
May 2019
Programmable Smart HART Temperature Transmitter
THZ
3
/ TDZ
3
SECTION 7
Section 7 - Applications
This section provides some examples of typical applications for the TDZ
3
and THZ
3
.
Point-to-Point Loops Deliver Analog
Simplicity with Remote Programmability
In the majority of applications, the THZ
3
or TDZ
3
is installed on a point-to-point 4-20mA process
loop like a regular analog transmitter (Figure 7.1). A HART Communicator, HART-based system
or FDT Host is used to configure and view the transmitter’s operating parameters and diagnostic
data from any point on the loop.
Power
Supply
DCS
PLC
SCADA
PC
Data Recorder
Indicator
HART
Primary Master
or Non-HART
Communicating Device
–
–
+
+
4-20mA Analog with Digital HART
superimposed
Smart HART
Temperature Transmitter
HART Slave Device
(THZ
3
in HPP enclosure shown)
HART Communicator
(Secondary Master)
NOTE:
The HART Communicator or PC with Smart HART
Interface Cable may be connected at any termination
point on the signal loop. The HART Communicator
and the signal loop must have between a 230 and
1100 ohm load for proper communications.
Figure 7.1.
From any termination point on the 4-20mA loop, you can view, test and change the transmitter’s operating
parameters using a HART Communicator or from a PC using PACTware (a HART modem is not required for PC setup).
