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What does a Differential Pressure (DP) transmitter measure?
Physics
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A Differential Pressure (DP) transmitter is an instrument designed to measure the difference between two applied pressures.
- Absolute Pressure is measured relative to a perfect vacuum.
- Gauge Pressure is measured relative to the ambient atmospheric pressure.
- Vacuum Pressure is a type of gauge pressure that is below atmospheric pressure.
The term "Differential Pressure" explicitly states that the device measures the difference between two pressure points.
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