Toshiba Tohsiba Electromagnetic Flowmeter Converter L5232 - Manual (Page 29)

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A B X
G
Y
E
Converter
terminal block
External ground
terminal
Twisting shields
Input signal cable
Twisting shields Excitation cable
Detector terminal block
A B X
G E Y FG
Ground terminal
Class D grounding
(Ground resistance 100 or less)
Figure 5.9 (b) Wiring between Detector and Converter (when grounding for detector is
difficult)
Ground terminal
Conductive material pipe
Example: Metal, etc. Non-conductive material pipe
Example: Resin pipe or metal pipe which
is internally coated with resin
Grounding wire
Ground terminal
Grounding wire
When piping material is non-conductive
Carry out class D grounding work
(grounding resistance 100 or less).
Class D ground
(Ground resistance
100 or less)
When piping material is conductive
Connect the grounding wires to both
ends of the piping flange.
Figure 5.10 Detector Grounding Method