Endress+Hauser Liquistation CSF33, Руководство по эксплуатации, Страница: 33 / 44

Liquistation CSF33 Troubleshooting
Hauser
33
3.3 Device-specific errors
972 Current > 20 mA M On Off Current output range exceeded
973 Current < 4 mA M On Off Current output range undershot
974 Diag. confirmed C Off Off User has acknowledged the message displayed
in the measuring menu.
974 Diag. confirmed C Off Off User has acknowledged the message displayed
in the measuring menu.
990 Deviation limit F On On Redundancy: limit value of percentage deviation
exceeded
991 CO2 conc. range F On On CO
2
concentration (degassed conductivity)
outside the measuring range
992 pH calc range F On On pH calculation outside the measuring range
993 rH calc range F On On rH calculation outside the measuring range
994 Dual cond range F On On Dual conductivity outside the measuring range
Problem Possible cause Tests and/or remedial measures
The device cannot be switched
on/display remains dark No supply voltage Check if voltage supplied
Basic module defective Replace basic module
Values appear on display but:
– Display does not change
and / or
– Device cannot be operated
Module not wired correctly Check modules and wiring
Impermissible operating system condition Switch off device and switch it on again
Control signals are not
accepted or outputs do not
switch Incorrect program setting Check program setting
Incorrect wiring Check wiring
Electronics failure Replace basic module
No. Message Factory settings Tests or remedial measures
Cat. Diag.
on/off Error
current