Emerson Micro Motion 4200 - Grounding Meter Components

2.4 Ground the meter components
In 9-wire remote installations, the transmitter and sensor are grounded separately.
Prerequisites
NOTICE
Improper grounding could cause inaccurate measurements or meter failure.
WARNING
Failure to comply with requirements for intrinsic safety in a hazardous area 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
2
) or larger wire size.
• 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 sensor according to the instructions in the sensor documentation.
2. Ground the transmitter according to applicable local standards, using the
transmitter’s internal or external ground screw.
• The earth ground terminal is located inside the power wiring compartment.
• The external ground screw is located on the side of the transmitter located below
the transmitter tag.
Mounting and sensor wiring Installation Manual
March2024 MMI-20058013
18 Micro Motion 4200 2-Wire Transmitter