Toshiba LF434 - Manual (Page 25)

TOSHIBA
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(6)Gruunding
The grounding [ermin^l of ihc Ll'434/Lh4t)4 flowmeter ithould be grounded with 100 ohm
or less ground resistance. Use a heavy copper braid or wire (cross-sectional area mm"
minimum) to ground the terminal anJ make it as shon as possible. The terminal is M4 size
and an M4‘sizc crimped ring lug should be used to connect the wire to the terminal. Avoid a
common ground where earth current may flow, An independent ground is preferable. Sec
Figure 4,li), for a conductive pipeline grounding and non-cjondactive pipeline grounding
procedures.
To prevent a two-poinl grounding, ground the shielded cable on the receiving instrument
side.
I If connection pipe is conductive:
Connect between the grounding terminal
and both ends of the mating flanges with
a heavy copper braid or wire
(cross-section 5,5 mm" minimum).
If connection pipe is non-conductive;
L’se H heavy copper braid or w ire
(cross-scction 5.5 minimum) to
ground he terminal w'jth 100 ohm or
less ground resistance.
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