Airplane transportation saves time and makes it possible for millions of passengers a day to effectively travel across vast geographic areas. During air travel, the aircraft is ascended several hundreds of feet high in the air. At this altitude, air pressure gets lower and creates a limited amount of breathable oxygen.
Why an Aircraft Needs Cabin Pressure
To combat this issue, the use of cabin pressure to ensure that flyers can breathe comfortably the entire trip is necessary. To create the air being pressurized and fresh outside air coming into the cabin, jet turbines on the outside of the aircraft spin and compress air as it makes its way back into the plane. Without pressurized, breathable air in the cabin, the use of oxygen masks to supply air would be critical for survival at high altitudes.
How Sensors Help
The loss of pressure in an airplane cabin is something pilots try to avoid at all costs. To do so, they rely on pressure sensors on board to measure air pressure at all times.
These sensors ensure that all parts of the pressurization system are fully functioning. Critical parts in the system including the outflow valve are monitored. These sensors must resist vibrations and accurately measure pressure without taking too much space.
Cabin Pressure Sensor that effectively measures pressure in an aircraft
The P940 force sensor, which is made of a stainless-steel wetted surface is welded, in-house, to a vacuum reference cavity. Using a proprietary sputtered thin-film, full-bridge strain gauge circuit, it provides long term stability and a temperature capability that’s needed in the air regulation of planes.