Pressure switch

• Brake switches
  Pressure switches
  Pressure switches SPDT
  Vacuum switch
  Differential clogging indicator
  Pressure Transducers
  

Pressure switches are generally used in industrial and automotive applications, where there is a requirement to produce an electrical signal once a certain pressure value is reached. The signal is used as input or an alert.

The management of technological processes in any field of activity, such as in the manufacturing or automotive industry, requires control of the pressure of the fluids that operate the system. This requires associating a particular pressure value, which is important for the system, to an electrical signal, for instance to run a machine cycle or indicate a particular situation (leaks, alarms, etc.). These operations can be controlled using a kind of pressure sensor, called a pressure switch, that is set to suit the particular application.

From an electrical point of view, there three main types:

• with two-way normally-open (NO) electrical contacts (SPST)
• with two-way normally-closed (NC) electrical contacts (SPST)
• with three-way changeover electrical contacts (SPDT)

A switch can be calibrated using a set screw which, by acting on a calibration spring, determines its load. The spring opposes the thrust of the pressure exercised by the fluid on the sensitive element (a membrane or piston), allowing the electrical contact to close or open only when the pressure setting is reached.

BRAKE SWITCHES	PRESSURE SWITCHES

PRESSURE SWITCHES SPDT	VACUUM SWITCH

DIFFERENTIAL CLOGGING INDICATOR	PRESSURE TRANSDUCERS