Emerson Rosemount 2140 Quick Start Manual page 14

Quick Start Guide
3.8 Grounding
Make sure grounding is done according to national and local electrical
codes. Failure to do so may impair the protection provided by the
equipment.
3.8.1 Grounding the housing
The most effective grounding method is direct connection to earth ground
with minimal impedance. There are two grounding screw connections
provided (see
Figure 3-3: Ground Screws
A
A. External ground screw
B. Internal ground screw
3.8.2 Signal cable shield grounding
Make sure the instrument cable shield is:
• Trimmed close and insulated from touching the housing.
• Continuously connected throughout the segment.
• Connected to a good earth ground at the power supply end.
Figure 3-4: Signal Cable Shield Grounding at Power Supply End
B
A. Trim shield and insulate
B. Minimize distance
C. Trim shield
D. Connect shield back to the power supply ground
14
Figure 3-3).
A
B
B
D
C C
Rosemount 2140 and 2140:SIS Level Detectors
July 2021