Fujimoto Fuji Differential Pressure Transmitter FKK 4 - Manual (Page 63)

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Grounding of transmitter casing Grounding from ground terminal
CK+
CK–
+
–
External grounding terminal
7.3 Grounding
Grounding terminals are provided at two places (at the inside of terminal box and on the side of
conduit connection).
By any of the methods given below, ground the transmitter in compliance with the relevant stipu-
lation in the standard on explosionproof installation (for example, grounding resistance 100
Ω or
less by one of the methods given below). In case of intrinsically safe and flameproof installation,
be sure to use the ground terminal for grounding.
CAUTION
The transmitter must be grounded. Otherwise, it may cause electric shocks or
incorrect operation.