www.miinet.com
Moore Industries-International, Inc.
- 35 -
User’s Manual
238-741-00K
May 2019
Programmable Smart HART Temperature Transmitter
THZ
3
/ TDZ
3
Recommended Ground Wiring Practices
Moore Industries recommends the following ground wiring practices:
•
Any Moore Industries product in a metal case or housing should be grounded.
•
The protective earth conductor must be connected to a system safety earth ground before
making other connections.
•
All input signals to, and output signals from, Moore Industries’ products should be wired
using a shielded, twisted pair wiring technique. Shields should be connected to an earth or
safety ground.
•
For the best shielding, the shield should be run all the way from the signal source to the
receiving device. (see Note below)
•
The maximum length of un-shielded input and output signal wiring should be 2 inches.
Note:
Some of Moore Industries’ instruments can be classified as receivers (IPT2, IPX2, etc.)
and some can be classified as transmitters (TRX, TRY, etc.) while some are both a receiver and
a transmitter (SPA2, HIM, etc). Hence, your shield ground connections should be appropriate for
the type of signal line being shielded. The shield should be grounded at the receiver and not at
the signal source.
CE Certification-related Guidelines
The grounding and wiring practices described above must be followed in order for the unit(s) to
meet the requirements set forth in EMC standard EN61326.
SECTION 3
