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Battelle Ultrasonic Liquid Level Monitor PowerPoint PPT Presentation


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Battelle Ultrasonic Liquid Level Monitor. This demonstration illustrates the “Corner Reflection” approach to tank level measurement via ultrasound. The displays that follow contain plots derived from data collected while emptying a tank of water.

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Battelle Ultrasonic Liquid Level Monitor

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Battelle

Ultrasonic Liquid Level Monitor


  • This demonstration illustrates the “Corner Reflection” approach to tank level measurement via ultrasound.

  • The displays that follow contain plots derived from data collected while emptying a tank of water.

  • Two ultrasound sensors were used to generate the liquid level data.

  • Both sensors were mounted to the lower outside of the tank, one at a 60° angle from the horizontal, the other at a 45°

  • angle.

2


The upper section of each display portrays data from the 60° sensor

The lower section of each display portrays data from the 45° sensor

3


  • The plots on the left-hand portion of each display portray the tank with:

  • The fill level shaded in

  • blue,

  • The sound zone from

  • the 60° sensor shaded

  • in green, and

  • The sound zone from

  • the 45° sensor shaded

  • in red.

4


The plots in the upper right-hand portion of each display show signal data from the 60° sensor.

The plots in the lower right-hand portion of each display show signal data from the 45° sensor.

5


Actual ultrasound signals with the intersections of the sound zones and the wall of the tank highlighted. These zones are where strong “corner shots” will occur.

6


The correspondence between the colored shaded regions and the sections of the tank wall intersected by the sound zones.

7


Enlarged views of signals as they pass through sound zones (highlighted) on tank wall.

8


Note the strong “corner shot” signal that occurs when the fill level passes through the second sound zone along the tank wall.

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The enlarged views of the signal emphasize the dramatic pulse from the “corner shot”.

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Sequence of displays

as tank empties from 24” to 2.5”.

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  • Contact:

  • Walter C. Weimer, Manager

  • Process and Measurement Technology

  • Battelle, Pacific Northwest Division

  • [email protected]

  • (509) 375-6922

  • Technical Contacts:

  • Richard [email protected]

  • (509) 375-4546

  • Scott [email protected]

  • (509) 375-3604

  • Don [email protected]

  • (509) 375-4365

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