EN
WIKA operating instructions model TR57-M
14222243.02 08/2022 EN/DE
15
Ground the case against electromagnetic fields and electrostatic charge.
It is not necessary to connect it separately to the equipotential bonding
system, provided that it has a fixed and secure metallic contact to the
pipes, and that these are connected to the equipotential bonding system.
When there is a non-metallic contact with the piping, the instrument must
be provided with equipotential bonding.
5.1.1 Tightening torque for the M12 mating connector or the M12
adapter
Select a tightening torque of 0.6 Nm.
5.1.2 Tightening torque for union nut of pipe adapter
Select a tightening torque of 0.5 ... 1.0 Nm.
5.2 Electrical connection
Depending on the type of application, the electrical connection must be
protected from mechanical damage. The electrical connection is made
via an M12 x 1 circular connector (4-pin).
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Output signal Pt100
5. Commissioning, operation
