Pressure sensor controllers are electronic devices that are used alongside pressure sensors to affect the pressure level in a given system. They also allow the pressure sensors to be controlled remotely, which is very useful as it means a user can control a number of them from one place, rather than having to adjust each one individually.
Pressure sensor controllers are connected to one or more pressure sensors and display the pressure level on a digital screen. If the pressure level is not satisfactory, the user can adjust it using the buttons on the controller.
Pressure sensor controllers differ in their supply current and voltage, IP rating, and, importantly, by the number of switching outputs they offer. The type of controller you need may be determined by the number of pressure sensors you would like to control at one time. They also come in varying sizes.