PROline Promag 50 4Wiring
Endress+Hauser 57
4.3.2 Special cases
Metal, ungrounded piping
In order to prevent outside influences on measurement, it is advisable to use ground
cables to connect each sensor flange to its corresponding pipe flange and ground the
flanges. Connect the transmitter or sensor connection housing, as applicable, to ground
potential by means of the ground terminal provided for the purpose (Fig. 38).
"
Caution!
Also, observe company-internal grounding guidelines.
!
Note!
The ground cable for flange-to-flange connections can be ordered separately as an
accessory from E+H → Page 85.
• DN ≤ 300: The ground cable is in direct connection with the conductive flange coating
and is secured by the flange screws.
• DN ≥ 350: The ground cable connects directly to the metal transport bracket.
Fig. 38: Potential equalisation with equalising currents in metallic, non-grounded piping systems
6 mm² Cu
DN 300≤
DN 350≥
F06-5xxxxxxx-04-xx-xx-xx-003
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