Maintenance; If A Problem Occurs - Burkert 8223 Manuel Utilisateur

5.1 MAINTENANCE

The 8223 sensor may be cleaned with water or a product which is compatible with the
materials therein.
Your Bürkert supplier is available to provide you with any additional information you
require.

5.2 IF A PROBLEM OCCURS...

An error is indicated by lighting up of the green LED, special flashing of the red LED and
the transmission of a 22-mA current to the current output.
The following table lists possible faults that can occur and their solutions:
Green
Problem LED
status
The sensor
OFF
does not
work
flashes
briefly
The sensor
measures a
wrong con-
ductivity
flashes
MAINTENANCE
Red Current
LED output
status status
The sensor is not con-
nected
The fuse of the installation
is in a bad condition
The switch of the installa-
OFF 0 mA tion is set to OFF
The power supply has
been wrong connected to
the + and - terminals
The power supply is not
stable or < 12 VDC
The "zero conductivity"
point has been calibrated
OFF 4 mA within the fluid or the "zero
conductivity" point has
drifted
The finger is dirty
Air bubbles appear within
the finger orifice
OFF -
The temperature compen-
sation is not correct
The conductivity fluctua-
tions are very important
18
Possible cause Do the following
Connect the sensor
Change the fuse
Set the switch to
ON
Check the wiring
Change the power
supply
carry out a calibra-
tion in air
Clean the sensor
finger
Follow the mountign
instructions
Select an appro-
priate compensation
Select a higher filte-
ring level (SW1)
See
also
4.3
-
-
4.3
-
3.5
5.1
4.1.2
3.4
3.3
8223