KROHNE MAC 100 EN - Manual (Page 69)

OPERATION
6
69
OPTISENS MAC 100
www.krohne.com 04/2011 - MA OPTISENS MAC 100 R01 en
6.7.2 Error category "Application error" ( "F", not bold)
6.7.3 Error category "Out of specification" (S)
INFORMATION!
Regard that also in case of an error message of the category "F" the measured values are not
valid!
Messages on the display Description Actions
F application error Application-dependent fault, but device is
okay.
Group message, when errors as described
below or other application errors occur.
temperature A (or B) Temperature sensor A (or B) is not
connected properly or measurement is out
of range.
Check cabling or replace the sensor!
pH compensation The pH value is not in the range from 8.5...9
(required range for a working
compensation).
Assure that the measured liquid has a
pH value in the range from 8.5...9.
polarisation sens. A (or B) Pre-amplifier is over-ranged by DC offsets
due to polarisation.
Check installation of sensor!
Flow control The flow control which is connected to the
control input transmits that the flow is too
low for an amperometric measurement.
Check the sample flow!
F open circuit A (or B or C) Load on current output A (or B or C) too
high, effective current too low.
Current not correct, mA output cable has
open circuit or load too high. Check cable,
reduce load to less than 550 Ω!
Over range CO A (or B
or C)
The current or the corresponding measured
value is limited by a filter setting.
Extend function C3.2.6 ("range") and
function C3.2.7 ("limitation").
F active settings Error during the CRC check of the active
settings.
Upload backup 1 or backup 2 settings, check
and adjust if necessary.
F factory settings Error during the CRC check of the factory
settings.
F backup 1 settings (or
backup 2 settings)
Error during the CRC check of the backup 1
or 2 settings.
Save active settings in backup 1 or 2.
INFORMATION!
Regard that in case of an error message of the category "S" the measured values are only
conditionally usable!
Messages on the display Description Actions
S uncertain measurem. Group message, when errors as described
below or other influences occur; measured
values are only conditionally usable.
Device maintenance necessary.
S sensor electronic A
(or B)
Measured values from sensor
electronic A (or B) are only conditionally
usable.
Sensor maintenance necessary.
S temperature A (or B) Measured temperature values from sensor
electronic A (or B) are only conditionally
usable.
Temperature sensor maintenance
necessary.
S slope A (or B) Slope of the pH electrode A (or B) Replace the electrode
.book Page 69 Friday, April 1, 2011 4:59 PM