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Explain the working of two types of ultrasonic flow meter.

Explain the application of rotating paddle switches in level measurement.

Giving a neat diagram explain the construction and working of resistance type
level detectors.

Explain the working of gamma ray based level measuring instrument.

Making use of a neat sketch explain the construction and working of capacitance
type level gauge for non-conducting liquids.

Explain how differential pressure sensing is employed in a closed tank to

measure level.

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