Wika TR10-C Manual do Utilizador descarregar pdf (Página 19)

WIKA operating instructions resistance thermometers and thermocouples, Ex n

14106886.01 06/2014 GB/D

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 eect on the protection class

■

For cable with a pronounced cold-ow 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

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