WIKA GDM-100-T Betriebsanleitung Seite 29

6. Faults
Faults
Contact is no longer
switching in accordance
with the specification
Switching status remains
unchanged despite reach-
ing the switch point/reset
point
No pointer movement
despite change in pressure
Pointer movement, even
though depressurised
Gas density falls continu-
ously
No communication via
Modbus or current signal
®
CAUTION!
Physical injuries and damage to property and the environment
If faults cannot be eliminated by means of the listed measures, the gas
density sensor must be taken out of operation immediately.
▶
Ensure that pressure or signal is no longer present and protect against
accidental commissioning.
▶
Contact the manufacturer.
▶
If a return is needed, please follow the instructions given in chapter 2.1
"Overview".
For claims, the serial and product numbers must be stated. The serial number is printed
on the dial, the product number on the product label. With claims, the atmospheric
pressure and the temperature during the measurement must be given, as well as the
data on the reference standard (model, class).
WIKA operating instructions, model GDM-100-T
Causes
Electrical connection is inter-
rupted
Electrical load unsuitable for
the switch contact model
Contact contaminated
Contacts defective (e.g. fused
contact zone)
Movement blocked
Warming or cooling of the mea-
suring instrument (no damage)
Leakage in the gas compart-
ment
Electrical connection not
correct
Configuration error
Measures
Carry out a continuity test on
the electrical connection leads
Maintain the permissible elec-
trical loads for the switch con-
tact model
Replace instrument. Before
recommissioning the new
instrument, provide a protective
circuit for the contact
Replace instrument
Let the instrument settle for 2
hours at 20 °C
Check the mechanical installa-
tion of the measuring instrument
Search for leaks with leak
detector e.g. GIR-10
Check wiring and power supply
Query via WIKA start-up kit
EN
29