Wika 54_twintemp Bedienungsanleitung PDF herunterladen (Seite 11)

Thermowell

Stem

Required safety

clearance

14004105.01 05/2011 GB/D/F/E

WIKA operating instructions model 54, Twin-Temp 11

6. Commissioning, ... / 7. Maintenance and ...

CAUTION!

When using thermowells, please

ensure that the stem does not

touch the bottom of the thermowell

since, due to the dierent

expansion coecients of the

materials, the stem may become

buckled at the bottom of the

thermowell.

(Formula for the calculation of the

stem length l

see the respective

thermowell‘s data sheet)

7. Maintenance and cleaning

7.1 Maintenance

The combined bimetal thermometer is maintenance-free!

The indicator should be checked once or twice every year. To do this

the instrument must be disconnected from the process and checked

using a temperature calibrator.

Repairs must only be carried out by the manufacturer.

7.2 Cleaning

CAUTION!

■

Clean the thermometer with a moist cloth.

■

Wash or clean the disconnected thermometer before

returning it in order to protect personnel and the

environment from exposure to residual media.

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Wika 54_twintemp Bedienungsanleitung Seite 11