WIKA D-21-9 - Manual (Page 8)

2059064.04 GB/D/F/E 06/2008
14 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio D-2X-9
2059064.04 GB/D/F/E 06/2008
15 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio D-2X-9
Failure Possible cause Procedure
No output signal
No/incorrect voltage supply or current
spike
Adjust the voltage supply to correspond
with the Operating Instructions *)
No/False output signal Incorrectly wired
Follow pin assignment (see Instrument
Label / Operating Instructions)
Output signal unchanged after change
in pressure
Wrong supply voltage or current spike Replace instrument
Signal span too small Power supply too high/too low
Correct the power supply in line with
the Operating Instructions
Signal span erratic Strong fluctuations in the power supply Stabilise the power supply; smooth it
(i.e.; remove interferences)
Hot instrument case surface Internal short-circuit in instrument Replace instrument
No output signal Cable break Check connections and cable
Output signal unchanged after change
in pressure
Mechanical overload through over-
pressure
Replace instrument; if failure reoccurs,
consult the manufacturer *)
Signal span dropping off/too small
Diaphragm is damaged, e.g. through
impact, abrasive/agressive media;
corrosion of diaphragm/pressure
connector; transmission fluid missing.
Contact the manufacturer and replace
the instrument
Signal span too small
Mechanical overload through over-
pressure
Replace instrument; if failure reoccurs,
consult the manufacturer *)
Signal span drops off Moisture present
Install the elektrical connection
correctly
Signal span erratic
Electromagnetic interference source in
the vicinity, e.g. inverter drive
Shield the device; shield the cables;
remove the interference source
Signal span erratic
Violent fluctuations in the process
media pressure
Damping; consult with manufacturer
Abnormal zero point signal Abnormal mounting position
Correct the zero point through control
panel or software
8. Maintenance, accessories / 9. Trouble shooting GB
8. Maintenance, accessories
Accessories
For details about the accessories (e. g. connectors), please refer to WIKA‘s price list, WIKA‘s
product catalog on CD or or contact our sales department.
9. Trouble shooting
Open pressure connections only after the system is without pressure!
WIKA pressure transmitters require no maintenance.
Have repairs performed by the manufacturer only. 

Do not insert any pointed or hard objects into the pressure port for cleaning to prevent
damage to the diaphragm of the pressure connection.
Take precautions with regard to remaining media in removed pressure trans-
mitters. Remaining media in the pressure port may be hazardous or
toxic!
Remove the pressure transmitter from service and mark it to prevent it from
being used again accidentally, if it becomes damaged or unsafe for opera-
tion.
Have repairs performed by the manufacturer only.



10. Trouble shooting GB
In case of unjustified reclamation we charge the reclamation handling expenses.
*) Make sure that after the setting the unit is working properly. In case the error continues to exist send in the instrument for reparation (or
replace the unit).
Please verify in advance if pressure is being applied (valves/ ball valve etc. open) and if the
right voltage supply has been chosen?
Warning
!
Warning