Basics of Industrial Pressure Switches скачать в хорошем качестве

Basics of Industrial Pressure Switches

Most industrial applications require the monitoring or limiting of pressure. Pressure measurement can be accomplished by transmitters, gauges or by switches. This video will provide a quick introduction of industrial electromechanical pressure switches. An industrial pressure switch is made up of the three main components: 1) the sensor, 2) the housing and 3) the switching element. Sensor The sensor is located above the pressure port and process connection. For pressure and differential pressure switches, there are several varieties of pressure sensors to choose. Housing Housings are classified and selected based on the atmosphere in which they’ll be used. Housing ratings are classified by several national and international agencies such as NEMA and CENELEC. Very generally put, housings can be rated as general purpose, dust & water resistant, water tight, corrosion resistant and hazardous (explosive) environments. Switching Element The switching element refers to the signaling device inside the enclosure that responds to the movement of the sensor. It can be either electrical or pneumatic, and provides an on-off signal (as opposed to an analog, or proportional signal produced by transmitters). The video below, courtesy of SOR Inc., provides a look inside how a typical pressure switch works. For more information, contact: Instrument Specialties Inc. 3885 St. Johns Parkway Sanford, FL 32771 phone 407.324.7800 fax 407.324.1104 e-mail: [email protected] www.isisales.com