MN301905 Rev A
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Advanced Adjustments
Step Eight
ADVANCED ADJUSTMENTS OVERVIEW
These optional functions are used to change the sensor output characteristics, or Create a False Echo Curve
to filter out false echo returns within the tank (improving sensor performance), or Update an existing False
Echo Curve filter if the original filter was not created during an empty tank condition.
1)
4-20 mA Rev Output
- Reverses the
current output from 4mA @ bottom and
20mA @ top of tank to 20mA @ bottom
and 4mA @ top of the tank.
2)
Fail-Safe
- Allows for the presetting of
the current output when a sensor
failure occurs. Options are no change
to current, 20.5mA or 22mA.
3)
Minimum Current
- Sets the minimum
current output for the sensor. Options
are 4.0mA or 3.9mA.
4)
Create a new False Echo Curve
- A
method to filter out false echo returns
within the tank. This should be
performed when the tank is at its
lowest level (empty).
5)
Update an existing False Echo
Curve
- A method to update an
existing False Echo Curve to include a
lower section of the tank that was not
exposed during the creation of the
original Echo Curve.
Note: If you don't
know the location (level position) or
validity of the original False Echo
Curve, it is recommended to delete the
original Echo Curve, and then create a
new False Echo Curve (versus
updating an existing False Echo
Curve).
