This sensor measures 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, up to a maximum of 110 kPa.

This Absolute Gas Pressure sensor can also be used as an altimeter.

Applications


Earth Science:

• Atmospheric pressure measurements
• Altitude investigations

Biology:

• Rate of Transpiration
• Production of gas in an enclosed atmosphere
• Rate of respiration
• Yeast fermentation

Chemistry:

• Gas Laws

This sensor is suitable for environmental investigations. 

The altimeter range calibration assumes that the pressure at sea level is 1013 mbar. This can be offset to the actual reading in the software.

The sensors electronics has automatic internal temperature compensation to minimise the effect of ambient temperature changes on data.

The user manual (available from the Resources tab) has a recommendation chart for the `best' sensor to use for different gas pressure investigations.

A Gas Pressure Tubing Accessory pack (3138) is available which contains PVC tubing, pipettes, connectors, stopcocks and a syringe.