A pressure sensor measures the pressure, typically of fluids, at a point in a fluid network. By monitoring the pressure at all nodes in a fluid network, one can often solve the network. As compared with flow sensors, pressure sensors often have less cost to achieve a similar result. When pressure is applied to a pressure sensor it triggers a switch. This usually turns an electrical circit on or off. Some speed cameras use them.

One way of constructing a pressure sensor is to use MEMS technology.

Sensors