44
6 Set up with the display and adjustment module
NCR-84 Two-wire 4 … 20 mA/HART
51141-EN-181127
– Stable and reliable measured values through frequent averag-
ing
– Insensitive in the close range
Demonstration
•
Adjustment for all applications which are not typically level meas-
urement
– Instrument demonstration
– Object recognition/monitoring (additional settings required)
•
Properties, sensor:
– Sensor accepts all measured value changes within the measur-
ing range immediately
– High sensitivity to interference, because virtually no averaging
Vessel form
Apart from the medium and the application, the vessel form itself can
influence the measurement. To adapt the sensor to these measuring
conditions, this menu item offers different options for vessel bottom
and ceiling for certain applications.
Enter the requested parameters via the appropriate keys, save your
settings with
[OK]
and jump to the next menu item with the
[ESC]
and
the
[->]
key.
Vessel height/Measuring range
Through this selection the operating range of the sensor is adapted
to the vessel height, which considerably increases measurement reli-
ability under different basic conditions.
The min. adjustment must be carried out independently of this.
Enter the requested parameters via the appropriate keys, save your
settings with
[OK]
and jump to the next menu item with the
[ESC]
and
the
[->]
key.
Caution:
If liquids with different dielectric constants separate in the vessel, for
example through condensation, the radar sensor can detect under
certain circumstances only the medium with the higher dielectric
constant. Keep in mind that layer interfaces can cause faulty meas-
urements.
If you want to measure the total height of both liquids reliably, please
contact our service department or use an instrument specially de-
signed for interface measurement.
925-0373 Rev A