Nearly every industrial product on the market today has a variety of subcategories that have developed because of variances in style, size or material. This is due to the numerous environments most products must be adapted to suit. Pressure transducers, which are utilized in pressure sensors that must measure the pressure of liquids or gas, are no exception. This particular industrial tool has five major categories, each of which has their own subcategories. The five versions of pressure sensors that pressure transducers are incorporated into are gauge pressure sensors, vacuum pressure sensors, sealed pressure sensors, differential pressure sensors and absolute pressure sensors. Also, the word “sensor” can be used interchangeably with transmitters and transducers.
The differences between each of these categories are not always that vast, particularly considering that at their essence they all do the same thing just in different ways. The similarities involve the basics of each process, which always includes sensors immersed in or directly outside of the substance picking up a signal, which they then translate according to the specified mathematical equation to be displayed on a screen or gauge for human interpretation. Technically, pressure transducers are the part of the pressure sensor system that translates the energy from one form to another. Differences may lie in any small variance in any of these basics. For example, absolute pressure sensors measure against an absolute vacuum, which refers to a mathematical sum. Differential pressure sensors calculate the difference between two or more pressures as measured by various inputs in the unit.
Spread across all of these categories are various sizes, from miniature ones to measure the flow in gas lines to very large sensors used to measure atmospheric pressure for meteorology. Different materials, such as various metal alloys and thermoplastics are also used according to the type of substance they will be exposed to as well as environmental concerns. The display fashion can also vary./p>