www.miinet.com
Moore Industries-International, Inc.
- 37 -
User’s Manual
238-760-00K
May 2019
Functional Safety Dual Input Smart HART® Temperature Transmitter
STZ
SECTION 3
Type n Applications – Zone 2
II 3 G Ex nA IIC
When installed as Category 3 equipment, the STZ 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 STZ shall be provided with supply transient protection external to the
apparatus such that the voltage at the supply terminals of the STZ does not exceed 119V peak
or 119Vdc.
The COM port shall not be used in Hazardous areas.
IECEx Installations
Intrinsically Safe Applications - Zone 0
Ex ia IIC
The STZ 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 or
100-100-81.
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.
Type n Applications – Zone 2
Ex nA IIC
When installed as EPL Gc equipment, the STZ shall be mounted within a tool-secured enclosure
which meets the requirements of IEC60079-0 and IEC60079-15 and be capable of accepting the
applicable wiring methods for the country of origin. The enclosure shall, at a minimum, meet the
requirements of IP54.
On installation, the STZ shall be provided with supply transient protection external to the
apparatus such that the voltage at the supply terminals of the STZ 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.