WIKA TR10-C - Handbuch (Seite 19)

WIKA operating instructions resistance thermometers and thermocouples, Ex n
14106886.01 06/2014 GB/D
19
GB
6.3.2 Thermocouples with cable or connector
6. Commissioning, operation
6.4 Cable glands
In thermometers equipped with connection heads, the cable glands must be fully sealed in order
to ensure that the necessary ingress protection is reached.
WARNING!
Only Ex-e approved cable glands should be used (colour: NOT blue)
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
Lemosa connector,
male at the cable
Binder connector, male at
the cable
(screw/plug-in connection)
Single
thermocouple
For the marking of
the cable ends, see
table
Cable
Dual
thermocouple
Positive and negative terminal are marked.
Two thermo connectors are used with dual
thermocouples.
Thermo connector