7. Starting, operation
Ground the housing through the process connection to protect the transmitter from electro-
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magnetic fields and electrostatic discharge.
The transmitter is classified for overvoltage category II and the pollution degree 1: Use a NEC
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or CEC Class 02 power supply (low voltage and low current max. 100 VA even under fault
conditions). Connect the cable shield or the green wire to ground.
Operate the pressure transmitter with a shielded cable and earth the shield at least on one
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side of the cable, if the cable is longer than 30 m or if it is run outside of the building.
Please make sure that the ends of cables with flying leads do not allow any ingress of
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moisture.
The pressure transmitters are supplied with a 1/2" NPT male conduit with 6 foot cable with
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free ends, or 1/2" NPT male conduit with 6 foot flying leads.
Power supply
UB+/Sig+
Positive supply / measurement connection
OV/Sig-
Negative supply / measurement connection
Cable with 6 foot (2 m) length,
IP 67 (NEMA 4x)
Order code: 2X
WIKA operating instructions, models E-10, E-11
2-wire
red
black
shield wire / case
(green with open wires/
flying lead)
Load (e.g. display)
3-wire
shield wire / case
(green with open wires/
flying lead)
US
red
brown
black
11