KROHNE IFC 110 Converter EN - Manual (Page 8)

8 IFC 110 F 05/2003
1.3.3 Grounding of flow sensor
• The flow sensor must be correctly connected to ground.
• The grounding cable may not transfer interference voltages.
• Do not use the grounding cable to connect more than one device to ground.
• In hazardous areas the grounding line is also used for potential equalizing purposes. Special
grounding instructions are contained in the installation instructions for hazardous-duty
instruments (only supplied together with such instruments).
• The flow sensor is connected to ground by means of a functional grounding conductor FE.
• Special grounding instructions for the connection of several flow sensors are contained in the
separate installation instructions of the flow sensors.
• These instructions also contain detailed descriptions on how to use grounding rings and how
to install flow sensors in metal or plastic pipes or in pipes which are coated on the inside.
Warning: Instrument must be properly grounded to avoid personnel shock hazard.
IMPORTANT!
For EEx versions, also pay regard to all directions included in Sect. 6.1 and 13.
Only the EEx flow sensor may be installed in the hazardous area. The EEx
certified signal converter must be installed outside the hazardous area!