www.miinet.com
Moore Industries-International, Inc.
- 34 -
User’s Manual
238-741-00K
May 2019
Electrical Connections
When installing any Moore Industries product, always follow all local regulations and standards
for grounding, shielding, and safety.
WARNING:
Terminals on this unit may be connected to hazardous voltages. Before making ANY
connections to this unit, always remove power from the loop or instrument power terminals.
AIS Option
The THZ3 DIN AIS is an associated apparatus which can be located in a non classified or Class
I Div 2/Zone 2 area with the input terminals connected to equipment in Zone 0/Intrinsically Safe
(I.S.) areas. IS cables need to be segregated; non-I.S. cables (i.e. power, and AO wiring) should
be routed away from I.S. cables (input connections) using suitable cable trunking or other me-
chanical means.
Warning: If the unit is installed in a hazardous location and/or the input terminals are connected
into the intrinsically safe area then please follow the Special Conditions of Use in the following
sections and installation diagrams in the Certification Information section.
Installation Category
All terminals are rated CAT I.
Equipment Ratings
The THZ
3
and TDZ
3
do not generate hazardous voltages, they provide a low voltage (0-1V) input
and a 4-20mA output. Products connected to the THZ
3
and TDZ
3
should be designed to receive
this type of input.
WARNING:
If this unit is used in a manner not specified by Moore Industries, the protection
provided by the equipment may be impaired.
Input/Output Wiring
The Input/Output connections can be made with 14 to 24 AWG (2.5mm
2
to 0.2mm
2
) wire.
The end of each conductor should be stripped no more than 0.25in (7mm).
Tighten the screws on the terminal block to 4.4 - 5.3 lbf
•
in (0.5 - 0.6 N
•
m).
Power Supply Wiring
All power connections should be made with 14 or 16 AWG (2mm2 or 1.3mm2) wire. The end
of each conductor should be stripped no more than 0.25in (7mm). The end of the stripped wire
should be tinned with solder, or inserted into a ferrule and crimped before being placed into a
terminal block. Tighten the screws on the terminal block to 4.4 - 5.3 lbf/in2 (0.5 - 0.6 N/m2).
Protective Earth Conductor
The Protective Earth Conductor shall be of equal or larger size wire than the other two power
conductors. The Protective Earth Conductor shall be the first conductor connected to the unit
when the unit is being wired. It shall be the last conductor removed when the unit is being
un-wired.
Programmable Smart HART Temperature Transmitter
THZ
3
/ TDZ
3
SECTION 3
