12
The Interface Solution Experts
THZ
2
&
TDZ
2
Programmable Smart HART
Temperature Transmitter and Display
Table 5.
Necessary Equipment Table
Variable Input Simulator for Thermocouple,
RTD, Millivolt, Potentiometer, or Decade
Resistance Box
Power Supply
Precision Load Resistor
Multimeter (optional)
Personal Computer
(Required only if
using a PC for setup)
Moore Industries Interface Cables
HART Modem Cable
(Required only if using a PC)
Moore Industries PC
Configuration Software
(Required only if using a PC)
HART Communicator
(Required only if NOT using a PC)
Variable; Accurate to ±0.05% of unit span
24Vdc, ±10%
250 ohms, ±0.01% HART specifies that total loop resistance is to be maintained between
250 ohms and 1100 ohms.
Accurate to ±0.025% of span; e.g., Fluke Model 87
Microsoft Windows based PC;
16Mb free RAM; 20MB free disk space on hard drive
Microsoft Windows XP, Vista or 7
1 (one) serial port or one available USB port
803-040-26, Isolated Interface Cable 803-039-26, USB cable 208-236-00
or Fuse Protected USB cable 804-030-26
Moore Industries part number
803-048-26
, or equivalent
Version 1.0 or greater, successfully installed to the hard drive
Fisher-Rosemount Model 375/475 or equivalent
(with THZ
2
/TDZ
2
Device Description loaded)
Device
Specifications
No Transmitter Needed
It is not necessary to connect the transmitter to a PC
to create configuration files using the software. The
Configuration Program can be run without connecting
a transmitter, and
most
parameters can be set without
benefit of input from a sensor or transmitter.
This makes it easy to create a set of operating
parameters, save them to external media, and
download them to one or more transmitters at a later
time.
The THZ
2
or TDZ
2
must
be connected to the PC in
order to: trim input, trim output, assign a tag, perform
a loop test, receive (via download) a configuration file
and save the configuration file from the transmitter’s
memory.
Connecting the THZ
2
or TDZ
2
to the PC
To set any of the options, you must first connect the
unit to the PC. The THZ
2
and TDZ
2
all have the same
terminal designations regardless of housing style, and
all can be setup using the connections shown in
Figures 7 and 8 (depending upon your instrument’s
housing).
Establish a simple current loop for the transmitter
by connecting a 24 Volt power supply, a 250 ohm
resistor and the transmitter in series. See Table 5 for
information on the necessary equipment.
Connect your instrument to the PC via the RS-232
serial port using Moore Industries Interface cable or
USB cables listed in Table 5.
A HART modem may also be used to connect your
unit to the PC. Connect the RS-232 end of the
modem to the PC’s COM port, then connect the
HART output end of the modem (two hook-up wires)
across the transmitter or the load resistor. For hook-
up diagrams, refer to Figures 7 or 8
(depending upon
your instrument’s housing).
