Questions on Flow Measuring Devices

List of Questions and answers on Flow Measuring Devices used in flow measurement.

  1. State the relationship which exists between flow and differential pressure.

  2. What is a primary flow device? What are four commonly used primary
    devices in process plant flow measurement applications?

  3. What is the purpose of a three valve manifold in a typical flow
    measurement? Describe the sequence of operation of the three valve
    manifold when the flow transmitter has to be removed from service.

  4. Why is the selection of the type of pressure tap important to the final flow
    metering installation performance (i.e. differential pressure range, etc).

  5. What is the major advantage and application of the following primary
    a) venturi tubes
    b) flow nozzles, and
    c) elbow taps?

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