A Digital Technique for Measurement of Differential Pressure and Flow

The paper describes a useful technique for digital transduction of differential pressure. The primary sensor used is a unique voltage-divider type transducer which divides the ac voltage supplied to it in linear response to the differential pressure variations. An electronic circuitry is discussed and suitably used to convert the output of the primary sensor into pulse number suitable for digital measurement and display. The technique is useful for the digital measurement of flow, also if the flow is converted into differential pressure with the help of any suitable obstruction meter.