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Secondary datalogging

Absolute Gas Pressure

Absolute Gas Pressure, Barometer and Altimeter

sensor in use
A simple way of investigating Boyle's Law, using the plunger of the syringe to release pressure

Click to see the graph
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Absolute Gas Pressure, Barometer and Altimeter - Order No. 3140
Absolute Gas Pressure wide range - Order No. 3142

These two sensors measure the total pressure on a system. When the single port is left open, then the sensor measures the atmospheric pressure. However when the sensor is connected to a sealed system, then it adds the system's pressure effect (negative or positive) to the atmospheric value.

Absolute Gas Pressure (3140) can also be used as an altimeter.

Applications:
Earth Science:
Atmospheric pressure measurements
Altimeter
Physics:
Boyle's Law (3142)
Vapour pressure of liquids
Chemistry:
Gas Laws