Electrical Connection - WIKA TR21 Mode D'emploi

5. Commissioning, operation
For installation, the appropriate fastenings, such as screws and nuts, must be used and
mounted using the appropriate tightening torques and tools (e.g. open-ended spanner).
The seals installed must be checked regularly that they are functioning correctly.
EN
The corresponding parts on the process side, the seals and the sealing rings are not
included in the delivery.
The insertion length, along with the flow rate and viscosity of the process media, may
reduce the max. loading on the protection tube.
The case must be grounded against electromagnetic fields and electrostatic charge. It
is not necessary to connect the case separately to the equipotential bonding system,
provided that it has a fixed and secure contact to the metallic vessel, its components or
pipes, and that these are connected to the equipotential bonding system.
When there is a non-metallic contact with the vessel, or with its structural components or
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
Select a tightening torque of 15 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).
Output signal Pt100 and Pt1000 (standard)
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12 WIKA operating instructions model TR21