Transmitter
General Instruction Manual
Wiring
IM 01U10B00-00EN-R, 3rd edition, 2018-07-09
63 / 90
7.4.8 Connecting power supply and external devices
WARNING
Risk of sparking and damage to the flow meter due to incorrect sealing
▶ In case of metric cable entry ensure appropriate IP rating and suitability of O-ring of
used accessory (e.g. cable glands).
▶ In case of NPT cable entry ensure appropriate sealing measures (e.g. use of sealing
tape).
NOTICE
Risk of damage to the flow meter due to incorrect power supply
▶ The specified power supply must be observed (see General Specifications).
▶ The power-supply cable must be designed for the power supply used with a
minimum diameter of 0.5 mm.
1 Transmitter back cover
2 Power supply cable gland
WARNING
Risk of injury due to electrical shock
▶ The transmitter must be assigned an external, fixed-mount power switch or automatic
circuit breaker in order to disconnect the transmitter from the power grid (compliant
with IEC60947-1 and IEC60947-3). Power switch or automatic circuit breaker must
disconnect all lines under current, but cannot disconnect the grounding conductor
under any circumstances.
▶ The power switch of automatic circuit breaker must be installed near the transmitter
and easily accessible. The "OFF" switch position must be clearly recognizable.
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