PHOTO ELECTRIC SENSORS
A photoelectric sensor is another type of position sensing device. Photoelectric sensors, similar to the ones shown below, use a modulated light beam that is either broken or reflected by the...
Wednesday, 27 July 2016
ULTRASONIC PROXIMITY SENSORS
Ultrasonic proximity sensors use a transducer to send and receive high frequency sound signals. When a target enters the beam the sound is reflected back to the switch, causing it to...
CAPACITIVE PROXIMITY SENSORS
Capacitive proximity sensors are similar to inductive proximity sensors. The main difference between the two types is that capacitive proximity sensors produce an electrostatic field instead of an electromagnetic field. Capacitive...
Tuesday, 26 July 2016
SENSORS, INDUCTIVE PROXIMITY SENSORS
The sensor incorporates an electromagnetic coil which is used to detect the presence of a conductive metal object. The sensor will ignore the presence of an object if it is not...
SENSORS, LIMIT SWITCHES
One type of feedback frequently needed by industrial-control systems is the position of one or more components of the operation being controlled. Sensors are devices used to provide information on the...
