www.miinet.com
Moore Industries-International, Inc.
- 39 -
User’s Manual
238-741-00K
May 2019
Programmable Smart HART Temperature Transmitter
THZ
3
/ TDZ
3
Type n Applications – Zone 2
II 3 G Ex nA IIC
When installed as Category 3 equipment, the THZ
3
and TDZ
3
shall be mounted within a
tool-secured enclosure which meets the requirements of EN 60079-0 and EN 60079-15 and is
capable of accepting the applicable wiring methods specified in EN 60079-14. The enclosure
shall, at a minimum, meet the requirements of IP54.
On installation, the THZ
3
and TDZ
3
shall be provided with supply transient protection external
to the apparatus such that the voltage at the supply terminals of the THZ
3
and TDZ
3
does not
exceed 119V peak or 119Vdc.
The COM port shall not be used in Hazardous areas.
Note:
Using the box provided on nameplate, the User shall permanently mark type of protection
chosen for the specific installation. Once the type of protection has been marked it shall not be
changed.
IECEx Installations
Intrinsically Safe Applications - Zone 0
Ex ia IIC
The THZ
3
and TDZ
3
shall be installed in an enclosure which maintains an ingress protection
rating of at least IP20.
The communications port shall be programmed through Moore Industries Fuse-Protected USB
Communications Cable, Part No. 804-030-26A, as described on Control Drawing
100-100-80 (TDZ
3
) or 100-100-81 (THZ
3
).
The Cable cannot be used in Hazardous Areas or in ambient temperatures in excess of 75° C.
Note:
Using the box provided on nameplate, the User shall permanently mark type of protection
chosen for the specific installation. Once the type of protection has been marked it shall not be
changed.
SECTION 3
