bürkert 8045 Bedienungsanleitung Seite 81

Faults
Fluctuating display
- Inappropriate filter?
- Air bubbles in the fluid?
- The electrodes are dirty?
- Are the electrodes passivated?
- Is the conductivity rapidly fluctuating?
Earth connection
- Is the earth connection good (No noise on the earth
line)?
- Are metal pipes connected to the earth?
Flow measurement incorrect
- Correct K-Factor?
- The flow has stopped and the display does not equal
zero?
- Electrodes in contact with the fluid?
- Arrow on the side of the housing indicates flow
direction?
- Cable glands show downstream direction (8045 with
stainless steel sensor)?
- Alignment of electrodes perpendicular to flow direction?
Current output value
- Switch 1 correctly set (Sinking or Sourcing)?
- Connection of the current ok?
Fixed current output value
- Parameters for current output ok?
The relays do not work
- Parameters ok?
- Relays correctly connected?
- Connection of relays 1 and 2 inverted?
- Protection fuses for the relays ok?
- Relays switches ON?
8045
MAINTENANCE
Status
Yes
Yes
Yes
No
Yes
No
No
No
Yes
No
No
No
No
No
No
No
No
No
Yes
No
No
35
Actions
Increase the filter or select slow
mode filtering.
Set slow mode filtering
Clean the electrodes.
Install the transmitter into the fluid
24 hours before use.
Transmitter not suited for the ap-
plication.
Use a non disturbed earth
Connect the pipe to the earth
Enter the correct coefficients or
determine vi aTeach-In
Perform a flow zero point calibration.
Plunge them into the fluid.
Turn the transmitter.
Turn the transmitter.
Turn the transmitter.
Select appropriate position.
Reconnect the current output.
Program the current output
Program the relay outputs.
Connect relays.
Connect relays accordingly
Change the fuses
Switch ON
See
4.4.7
4.4.7
5.1
3.1
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4.5.5
4.4.3
4.5.3
3.1.1
3.1.1
3.2
3.4.3
3.3
4.4.4
4.4.6
3.3
3.3
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