Manual OPTISENS PAC 050
OPTISENS PAC 050 24
6.1
Error messages
Error message
Cause
Action
Slope error
The slope determined by
calibration was higher than
65 mV/pH or lower than 50 mV/pH.
Please check the sensor connection and
cable, and make sure that the calibration data
stored in the instrument corresponds to the
calibration solutions used. Also make sure that
the temperature settings are correct. Then
repeat the calibration. If the error message
remains, the sensor has to be replaced or
regenerated.
Sensor zero
The zero deviation determined by
calibration was higher than 60 mV
or lower than -60 mV.
Please follow the procedure described above.
Make sure that the sensor buffer stored in the
calibration data corresponds to the sensor
used. If the error remains, at least the
reference electrode has to be replaced or
regenerated.
Error input 1
The pH or ORP electrode gives no
signal.
Please check the connections, the cable and
the sensor for signs of damage.
Error input 2
The temperature sensor gives no
signal.
Please check the connections, the cable and
the sensor for signs of damage.
This message also appears if automatic
temperature compensation was selected
although no temperature sensor was used.
Limit 1 / 2
The measured value exceeded
limit 1 (or dropped below limit 2,
respectively).
Please check the dosing and readjust the
control parameters, if necessary.
Dosage
Pump 1 (or 2, resp.) feeds with
100% for more than the defined
period of time.
Please check the dosing, especially the
feeding tubes and connections. Caution!
Carefully check for leaking chemicals!
Ext. controller stop
The digital input has been short-
circuited.
This only indicates the external controller stop.
If, however, you have connected a level
sensor, this message appears due to the „lack
of water“ alarm.
7.
Output
Main menu
.
.
Basic settings
Basic settings
.
.
Analog output
Analog
output
0…20mA/4…20mA
.
Start
0/4mA
.
End 20 mA
.
Analog
output
Meas.
value
Serial interface
RS485 (option)
Bus
address
Bus address
Nr.
00
Set a number
between 0 and 31 to
address the device
via data bus.
