A pressure sensor can be used for all types of applications.
These types of sensors essentially measure the force required to expand
liquids and gas. They also can act as a transducer or switch allowing a
predisposed amount of pressure applied to send a signal to other devices
in order for further operation to begin or end.
The sensor can
monitor and control the function of many different devices. They can
also be used in measurement applications, for instance fluid or gas
flow, altitude, and force. Because of their dynamic nature, these types
of sensors can be used in a variety of industries from tech to
manufacturing.
Force collection sensors use a diaphragm, piston,
bourdon tube, or bellows to measure strain or force applied. Examples of
this type of pressure sensors are optical, piezoelectric, capacitive,
and electromagnetic.
Measurements of Strain
Optical
types employ the use of a optical fibers or elastic film in order to
detect the effect of a predetermined amount of pressure. These are most
commonly used when the object being tested is remote or in a high
temperature environment.
The Piezoelectric type of sensor
uses a quartz material upon a sensing material to measure pressure
applied. Most commonly, the piezoelectric type is used to measure highly
dynamic pressures.
The Capacitive type sensor couples a
diaphragm and a pressure cavity to create a capacitor to detect strain.
These are usually comprised of metal, ceramic, and silicon diaphragms.