TS Relative Pressure

Relative Pressure Sensor is used to measure the pressure difference between air. It is connected to external air by hose P₁ and P₂ placed at front side of the sensor. If two hoses are connected to external air, the pressure difference will be 0. If there is only one hose connected to external air and the other one is connected to gas to be measured. The pressure difference value is between the gas to be measured and external air. If the pressure in P₁ is higher than its in P₂, the pressure difference will be positive.

Typical experiment

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Charles’s law

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