WIKA TC12-M - Handbuch (Seite 19)

GB
6. Commissioning, operation
14083458.01 09/2013 GB/D
WIKA operating instructions models TR12, TC12 (Ex i) 19
Variant 1
For the electrical specifications (e.g. connection diagrams, tolerance values, etc.), see
chapter 6.1 “Electrical Connection” or the data sheets TE 60.17 (for TR12) and TE 65.17
(for TC12).
Variant 2
For the electrical specifications (e.g. connection diagrams, tolerance values, etc.) please
refer to the relevant operating instructions and/or data sheet for the built-in head-mounted
transmitter.
Variant 3
For the electrical specifications (e.g. connection diagrams, tolerance values, etc.) please
refer to the relevant operating instructions and/or the relevant data sheet for the built-in field
transmitter.
Variant 1 and 2
■ Junction between cable gland and connection head
M20 x 1.5 thread: Tightening torques 12 Nm
½ NPT thread: Tightening torques 30 Nm
■ Junction between cable and cable gland
Screw the male nut tightly into the adapter (use appropriate tools!)
During installation, take care to
■ Avoid distorting the cable sheath when tightening the male nut.
■ Avoid cutting too deep into the cable sheath.
■ Use suitable cable.
■ Be careful of the clamping zone of the cable gland.
Requirements for meeting ingress protection
■ Only use cable glands within their indicated clamping range (cable diameter suitable for
the cable gland)
■ Do not use the lower clamping area with very soft cable types
■ Only use circular cross-section cables (if necessary, slightly oval in cross-section)
■ Do not twist the cable
■ Repeated opening/closing is possible; however only if necessary, as it might have a
detrimental effect on the protection class
■ For cable with a pronounced cold-flow behaviour the screw connection must be fully
tightened
CAUTION!
■ The protection class is not valid with armoured cables (stainless steel
sheathed)
■ Seal should be checked for signs of brittleness and, if necessary, replaced