Emerson Micro Motion 5700 Installation Manual page 22

Mounting and sensor wiring
February 2023
Prerequisites
NOTICE
Improper grounding could cause inaccurate measurements or meter failure.
WARNING
Improper grounding could result in an explosion causing death or serious injury.
Note
For hazardous area installations in Europe, refer to standard EN 60079-14 or national
standards.
If national standards are not in effect, adhere to the following guidelines for grounding:
• Use copper wire, 14 AWG (2.08 mm
• Keep all ground leads as short as possible, less than 1 Ω impedance.
• Connect ground leads directly to earth, or follow plant standards.
Procedure
1. Ground the Coriolis sensor according to the instructions in the sensor installation
2. Ground the transmitter according to applicable local standards, using the
22
manual for your Coriolis sensor.
transmitter's internal or external ground screw.
• The internal ground screw is located inside the transmitter-to-sensor wiring
compartment.
Figure 3-12: Internal ground screw
• The earth ground terminal is located inside the power wiring compartment.
• The external ground screw is located on the outside of the transmitter housing
below the transmitter tag.
2 ) or larger wire size.
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