KROHNE SU 501 EX EN - Manual (Page 23)

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Malfunction during function test
l After pushing the test key, the switching conditions do
not occur in the correct sequence or correct duration, e.
g. no full signal is outputted.
à
Measure the line resistance
à
If the cable is highly resistive, bring it to a normal
resistance, e.g. check terminals and cable connections
on corrosion
7.3 Instrument repair
If a repair is necessary, please proceed as follows:
You can download a return form from our Internet homepage
http://www.krohne-mar.com/fileadmin/media-lounge/PDF-
Download/Specimen_e.pdf.
By doing this you help us carry out the repair quickly and
without having to call back for needed information.
l
Print and fill out one form per instrument
l
Clean the instrument and pack it damage-proof
l
Attach the completed form and possibly also a safety data
sheet to the instrument.
SU 501 Ex - Signal conditioning instrument 23
Maintenance and fault rectification
27953
-EN
-050616