Questions on Pressure Measuring Devices

Interview Questions Instrumentation
1

List of Questions and answers on Pressure Measuring Devices used in pressure measurement.

  1. Sketch a bar chart and state the relationship between absolute pressure and
    gauge pressure. Clearly indicate a vacuum scale on this bar chart.

  2. Sketch a typical DP transmitter device and explain the principle of operation.

  3. Sketch and describe a DP transmitter low pressure installation used to
    measure the gauge pressure in a closed tank.

  4. If a transmitter is calibrated to measure a pressure of 0-80 KpaG in order to
    develop a 4-20 mA current signal; what pressure will correspond to a signal of
    13.5 mA? (answer: 47.5 kPaG)

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