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WIKA operating instructions, model GDM-100-T
EN
14535893.01 01/2022 EN/DE
Faults
Causes
Measures
Contact is no longer
switching in accordance
with the specification
Electrical connection is inter-
rupted
Carry out a continuity test on
the electrical connection leads
Electrical load unsuitable for
the switch contact model
Maintain the permissible elec-
trical loads for the switch con-
tact model
Contact contaminated
Switching status remains
unchanged despite reach-
ing the switch point/reset
point
Contacts defective (e.g. fused
contact zone)
Replace instrument. Before
recommissioning the new
instrument, provide a protective
circuit for the contact
No pointer movement
despite change in pressure
Movement blocked
Replace instrument
Pointer movement, even
though depressurised
Warming or cooling of the mea-
suring instrument (no damage)
Let the instrument settle for 2
hours at 20 °C
Gas density falls continu-
ously
Leakage in the gas compart-
ment
Check the mechanical installa-
tion of the measuring instrument
Search for leaks with leak
detector e.g. GIR-10
No communication via
Modbus
®
or current signal
Electrical connection not
correct
Check wiring and power supply
Configuration error
Query via WIKA start-up kit
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
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).
6. Faults
