Maintenance And Cleaning - WIKA intelliTHERM TGT73 Mode D'emploi

8. Electrical connection / 9. Maintenance ...
As a power supply, an unstabilised DC power supply is sufficient, with
a max. ripple of 10 % ss in the range of the specified power supply
limits. It is important to ensure that the applied power supply is at least
greater than the maximum required voltage drop from the external
display and evaluation units; i.e. the voltage at the transmitter must
not fall below 12 V.

9. Maintenance and cleaning

9.1 Maintenance
Gas-actuated thermometers with transmitters are 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.
9.2 Cleaning
CAUTION!
Clean the instrument with a moist cloth.
■
Wash or clean the dismounted instrument before
■
returning it in order to protect personnel and the
environment from exposure to residual media.
Residual media in the dismounted gas-actuated
■
thermometer can result in a risk to personnel,
the environment and equipment. Take sufficient
precautionary measures.
For information on returning the instrument see chapter
11.2 "Return".
WIKA operating instructions model TGT73
GB
19