Wiring TMT162
12 Endress+Hauser
Connection using the Endress+Hauser power supply RN221N
Fig. 6: HART
®
connection with the Endress+Hauser power supply RN221N
Connection using other power supplies
Fig. 7: HART
®
connection using other power supplies
4.4 Shielding and potential equalization
Please take note when installing the device:
If screened (shielded) cables are used then the shielding connected to the output (output signal 4 to
20mA) must be at the same potential as the shielding at the sensor connection!
When operating in plants with high electromagnetic fields, it is recommended that all cables be
shielded using a low ohm ground connection. Due to the possible danger of lightning strikes,
shielding is also recommended for cables that are run outside buildings!
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