Faults – WIKA T24 Benutzerhandbuch
Seite 29
GB
WIKA operating instructions temperature transmitter, model T24
29
2370242.09 08/2013 GB/D
CAUTION!
If faults cannot be eliminated by means of the measures
listed above, the instrument must be shut down immedi-
ately, and it must be ensured that pressure and/or signal
are no longer present, and it must be prevented from
being inadvertently put back into service.
In this case, contact the manufacturer.
If a return is needed, please follow the instructions given
in chapter 12.1 “Returns” and enclose a short description
of the problem, details of ambient conditions as well as
period of operation before the problem occurred with the
temperature transmitter.
12. Faults
Parasitic ground-loop
Capacitive or
inductive coupling
over the sensor
Check process adap-
tion, output adaption
(WIKA_TT software)
4 mA < l < 20 mA
but wrong values
Current value I is okay at
low values, but too high at
higher temperatures
Current value I is unstable,
changes within milliseconds
Load too high for the supply voltage
Electromagnetic
interference
Wrong transmitter
configuration