Burkert 8041 Manuel Utilisateur page 52

status of
problem the bar status red led
graph
Flow meas- Unstable Off
urement
unstable
The device Indicates a Off
does not value
transmit any
current or
frequency.
The device On Off
does not
indicate the
zero flow.
50
status
status green current or
led frequency
output
Flashes once > 4 mA
per second. and > 0 Hz
Flashes once 0 mA and/or
per second 0 Hz
Flashes once > 4 mA and
per second > 0 Hz
English
Type 8041
Maintenanceandtroubleshooting
meaning / causes What to do
→
The electrodes are dirty.
→
The electrodes are not in
contact with the fluid.
→
Air bubbles appear in the
fluid.
→
→
The sensor has not been
immersed for 24 h before
calibration of the "zero
flow" point.
→
The fluctuations in the
flow are very significant.
→
The upstream/down-
stream straight pipe dis-
tances are too short.
→
The sink/source switch is
incorrectly positioned.
→
The outputs are incor-
rectly wired.
→
Calibration of the "zero
flow" point has been
incorrectly executed.
Clean the electrodes (see § 11.3).
Ensure that the electrodes are always
immersed in the fluid.
Follow the assembly instructions (see
§ 8.2).
Select the "slow" filter (see §
Follow the calibration procedure (see
§ 10.7).
Select the "slow" filter (see §
Follow the assembly instructions (see
§ 8.2).
Position the sink / source switch cor-
rectly (see § 8.3.1).
Check the wiring of the outputs (see
§ 8.3.1, 8.3.2 and 8.3.3)
Calibrate again (see § 10.7).
10.5).
10.5)