Wiring
Proline Promag 55 PROFIBUS PA
52
Hauser
4.5.2
Special cases
Metal, ungrounded piping
In order to prevent outside influences on measurement, it is necessary 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 (see diagram).
The ground cable for flange-to-flange connections can be ordered separately as an accessory from
Hauser
• DN
≤
300 (12"): The ground cable is in direct connection with the conductive flange coating and
is secured by the flange screws (A).
• DN
≥
350 (14"): The ground cable connects directly to the metal transport bracket (B).
"
Caution!
Also, observe company-internal grounding guidelines.
a0004376-ae
Fig. 36:
Potential equalization with equalizing currents in ungrounded, metal pipes
(ground cable: copper wire, at least 6 mm
2
/10 AWG).
A
Installing ground cable at DN
≤
300 (12")
B
Installing ground cable at DN
≥
350 (14")
A
B
