Grounding The Measuring Sensor; Classical Method - Honeywell TWM 9000 Quick Start Manual

ELECTRICAL CONNECTIONS
3

3.6 Grounding the measuring sensor

3.6.1 Classical method

CAUTION!
There should be no difference in potential between the measuring sensor and the housing or
protective earth of the signal converter!
• 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 at the same time.
• 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-duty equipment.
• The measuring sensors are connected to ground by means of a functional grounding
conductor FE.
• Special grounding instructions for the various measuring sensors are provided in the
separate documentation for the measuring sensor.
• The documentation for the measuring sensor also contain descriptions on how to use
grounding rings and how to install the measuring sensor in metal or plastic pipes or in pipes
which are coated on the inside.
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TWM 9000
34-VF-25-53 iss.3 GLO Aug 10 US