WIKA WUD-26 - Handbuch (Seite 21)

11611057.01 GB/D 11/2013
21 Operating instructions/Betriebsanleitung, WUD-2x
10. Trouble shooting GB
Failure Possible cause Procedure
No/False output signal Incorrectly wired Follow pin assignment (see instrument label /
operating instructions)
Abnormal output signal or abnormal zero
point signal
Zero point set wrongly Adjust zero point correctly (see chapter 8); a
sufficiently accurate current/volt meter should
be used
Abnormal zero point signal Medium or ambient temperature too high/
too low
Control the internal temperature of the instru-
ment within the permissible range; observe
the allowable temperature error (see operating
instructions)
Diaphragm is damaged, e.g. through impact,
abrasive/agressive media; corrosion of
diaphragm/pressure connector.
Replace instrument
Signal span dropping off/too small Diaphragm is damaged, e.g. through impact,
abrasive/agressive media; corrosion of
diaphragm/pressure connector
Contact the manufacturer and replace the
instrument
Signal span too small Power supply too high/too low Correct the power supply in line with the
Operating Instructions
Mechanical overload through overpressure Re-calibrate the instrument *)
*) 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).
In case of unjustified reclamation we charge the reclamation handling expenses.
If the problem persists, contact our sales department.
USA, Canada: If the problem continues, contact WIKA or an authorized agent for assistance. If the pressure transducer
must be returned obtain an RMA (return material authorization) number and shipping instructions from the place of
purchase. Be sure to include detailed information about the problem. Pressure transducers received by WIKA without a
valid RMA number will not be accepted.
Process material certificate (Contamination declaration for returned goods)
Purge / clean dismounted instruments before returning them in order to protect our employees and the environment from
any hazard caused by adherent remaining media.
Service of instruments can only take place safely when a Product Return Form has been submitted and fully filled-in. This
Return Form contains information on all materials with which the instrument has come into contact, either through installa-
tion, test purposes, or cleaning. You can find the Product Return Form on our internet site (www.wika.com).