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Reference Manual
00809-0100-4140, Rev AA
January 2017
4.7.1
Level switch grounding
The most effective grounding method is a direct connection to earth ground with minimal
impedance (< 1
).
shows the two grounding screw connections
provided on the level detector.
Note
Grounding the level detector using a threaded conduit connection may not provide a
sufficient ground.
Figure 4-3. Ground Screws
A. External ground screw
B. Internal ground screw
4.7.2
Signal cable shield grounding
Make sure the instrument cable shield is:
trimmed close and insulated from touching the level detector housing.
continuously connected throughout the segment.
connected to a good earth ground at the power supply end.
Figure 4-4. Cable Shield
A. Trim shield and insulate
C. Trim shield
B. Minimize distance
D. Connect shield back to power supply ground
B
A
A
B
B
C
C
D
Summary of Contents for Rosemount 2140
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Page 8: ...VI Reference Manual 00809 0100 4140 Rev AA Contents January 2017 Contents ...
Page 14: ...4 Reference Manual 00809 0100 4140 Rev AA Introduction January 2017 Introduction ...
Page 112: ...102 Reference Manual 00809 0100 4140 Rev AA Troubleshooting January 2017 Troubleshooting ...
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