WIKA Intelli Therm TGT73.100, Operating Instructions Manual, Page: 20 / 92

EN
14028755.03 02/2021 EN/DE/FR/ES
20 WIKA operating instructions model TGT73
8. Electrical connection / 9. Maintenance and ...
2-wire system
(e.g. 4 ... 20 mA)
3-wire system
(e.g. 0 ... 10 V)
Earth, connected
to case
Terminals 3, 4, 5 and 6:
only for internal use
UB+/Sig+
+0V/Sig-
Evaluation
(display)
Power supply
Terminal box
Earth, connected
to case
Iout/Uout
Terminals 4, 5 and 6:
only for internal use
UB+/Sig+
+0V/Sig-
Evaluation
(display)
Power supply
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.