Hach LANGE si629 P Bedienungsanleitung Seite 35

6. Error messages
On display
ALARM
pH10.00
CLEANING
X s
POST-CLEANING
pH 7.00
DATA LOGGER
ERASED
DATA LOGGER
EMPTY
si629 P_HACH_LANGE_Ed.0510.indd ANG:31 si629 P_HACH_LANGE_Ed.0510.indd ANG:31
Problem
The alarm relay changes from
NC to NO (open circuit).
23.5°C
Activation of cleaning relay.
Time during which the relays
and the 4-20 output are not
active.
Data being stored in the data
DL
logger.
23.5 °C
All data stored in the Data
logger have been deleted.
No data in the data logger.
Possible causes
Lag time of alarm relay has been surpassed, due to
a reading out of limits.
Reading out of range.
Current output will remain at 22 mA.
The programmed cleaning is being carried out.
During cleaning time the limit relay is not activated
and current output remains fixed at the value pro-
grammed in Hold.
After a cleaning the instrument needs some time to
stabilize before starting the measurement. This time
is programmed in Post-cleaning option.
Data logger is active (START). Data are being
stored, according to the data logger programming
(interval or event).
Data logger is empty because all data have been
deleted.
No data in the data logger. Data have not been
captured or have been deleted. Verify if START has
been selected when programming the Data Logger.
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