Transcription of Capacitive Proximity Sensors Theory of Operation
{{id}} {{{paragraph}}}
Example: marketing
Capacitive Proximity Sensors Theory of Operation
54 Capacitive Proximity SensorsTheory of OperationCapacitive Proximity Sensors are similar to inductive proximitysensors. The main difference between the two types is thatcapacitive Proximity Sensors produce an electrostatic fieldinstead of an electromagnetic field. Capacitive proximityswitches will sense metal as well as nonmetallic materials suchas paper, glass, liquids, and sensing surface of a Capacitive sensor is formed by twoconcentrically shaped metal electrodes of an unwoundcapacitor. When an object nears the sensing surface it entersthe electrostatic field of the electrodes and changes thecapacitance in an oscillator circuit.
2) The blind zone of an ultrasonic proximity sensor can be from _____ - _____ cm, depending on the sensor. 3) The approximate angle of the main sound cone of an ultrasonic proximity sensor is _____ degrees. 4) The free zone between two parallel ultrasonic sensors with a rated sensing range of 20-130 cm must be
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: