Pressure sensors measure the pressure of the atmosphere, gas or liquid and convert the pressure into an analogue electrical signal. Although the output of a pressure sensor is analogue, it can be adapted to digital data using an analogue-to-digital converter (ADC).
Three different types of pressure can be measured: gauge, absolute and differential.
- Gauge pressure uses a reference to the atmosphere around the sensor
- Absolute pressure sensors will give the result relative to zero (a perfect vacuum)
- Differential pressure sensors measure the difference in pressure between two points
Pressure sensors are used in a range of industries such as the automotive, biomedical, aviation and marine.
Fibercore’s Twin Hole optical fibers can be combined with fiber Bragg gratings (FBGs) to give ultra-small cross section pressure sensors without the need to manufacture convoluted mechanical transducers.