Terminal connections for 4-wire cableFigure 2-5:
2.4 Ground the flowmeter components
In 4-wire remote installations, the transmitter and sensor are grounded separately.
Prerequisites
CAUTION!
Improper grounding could cause inaccurate measurements or meter failure.
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 (2.5 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 DIN rail.
The rail clip in the base of the transmitter housing grounds the transmitter to the
DIN rail.
Mounting and sensor wiring for 4-wire remote installations
12 Micro Motion
®
Model 1500 and Model 2500
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