What does a pressure sensor measure?

A pressure sensor specifically measures the pressure of liquids or gases, which makes it essential in a variety of applications such as weather monitoring, industrial processes, and automotive systems. The functionality of a pressure sensor is based on the detection of force exerted by a fluid (either liquid or gas) against a given area. When pressure is applied, the sensor translates this physical change into an electrical signal, which can then be processed or displayed.

In contexts such as environmental monitoring, pressure sensors can be used for detecting atmospheric pressure changes, while in industrial settings, they may monitor pressures in pipes or tanks, ensuring systems operate within safe and optimal ranges. This distinct capability is what clearly aligns with the purpose of a pressure sensor, distinguishing it from other choices such as movement detection, temperature changes, or moisture levels, which are measured by different types of sensors specifically designed for those functions.