KROHNE MFC 300 EN - Manual (Page 34)

4
ELECTRICAL CONNECTIONS
34
MFC 300
www.krohne.com 02/2012 - 4000498602 - MA MFC 300 R03 en
4.5 Grounding the measuring sensor
• The measuring sensor must be properly grounded.
• The grounding cable should not transmit any interference voltages.
• Do not use the grounding cable to connect more than one device to ground.
• The measuring sensors are connected to ground by means of a functional grounding
conductor FE.
• In hazardous areas, grounding is used at the same time for equipotential bonding. Additional
grounding instructions are provided in the separate "Ex documentation", which are only
supplied together with hazardous area equipment.
19" rack-mounted housing
Figure 4-7: Connection diagram for remote versions, 19" rack-mounted housing
1 Terminal compartment for signal converter
2 Terminal compartment for measuring sensor
3 Connect shielding to spring terminal
4 Connect shielding to terminal S
(The shielding can be connected to 22z, 22d, 24z or 24d)
5 Functional ground
DANGER!
There should be no difference in potential between the measuring sensor and the housing or
protective earth of the signal converter!
.book Page 34 Monday, February 6, 2012 11:01 AM