Pressure Transducer Vs Pressure Switch

Words: 540
Pages: 3
Open Document
There is a lot of confusion about the differences between pressure switches and pressure transducers. While the two devices produce an electrical signal in response to a pressure, the similarity ends there. The electrical output signal of the pressure switch is vastly different from that of the pressure transducer. Once this essential difference is understood, the question of when to use a pressure switch versus a pressure transducer should be more apparent.

Pressure Switches Produce A Binary Output Signal

A switch can be either open or closed. It has no other state. It can only be used to turn things on or off such as a light or an electric motor. While a switch does a good job of turning on the motor of an electric car, its ability to adjust the car's speed is severely limited. You could rig the switch so that it turns the car's motor off when the speed exceeds 30 mph and then turns it back on when the speed drops below 25 mph. While this keeps the speed within 25-30 mph, it is a poor speed control because it is limited to a certain speed range and cannot be used to speed up the car at different rates of acceleration. Because of the on-off binary nature of the switch, you would not use it to control the speed of a car that must operate at different speeds. …show more content…
If its actuation pressure is 50 psi, then it takes 50 psi of pressure to close the switch (or open it if it is normally closed). If you place the pressure switch in series with the on/off switch of an electric device, the device cannot be turned on until the pressure sensed by the switch reaches a certain
Show More

Related Documents: Pressure Transducer Vs Pressure Switch

AUD101 HW 1 STUDY GUIDE Essay

SOUND THEORY BASICS (chapter 1-2) Transducer – any device that changes one form of energy into another corresponding form of energy (ear, microphone, speakers, telephone) Sound – brains’ perceptions & interpretations of physical auditory stimulus (see SPW below) (if a tree falls in the forest & no one’s around to hear it, sound does NOT exist) Sound-Pressure Waves – periodic variations in atmospheric pressure (air molecules bouncing) Compression – areas of high pressure (air molecules compacted together)…

Words 4152 - Pages 17

Diploma: Reliability Engineering and P.L . Clemens Essay

system element*, of functional integrity to perform as intended. E.g., relay contacts corrode and will not pass rated current when closed, or the relay coil has burned out and will not close the contacts when commanded — the relay has failed ; a pressure vessel bursts —…

Words 7874 - Pages 32