The document discusses different types of optical, inductive, capacitive, and magnetic sensors. It provides diagrams of various sensor configurations including retroreflective and diffuse optical sensors, inductive proximity sensors using an oscillator and resonant circuit, capacitive level sensors, and reed switches for contact sensing. Application examples shown include object detection, level measurement, and rotational encoding.
63. Connection Resonant High LED
cable circuit coil frequency Indicator
magnetic
field
64.
65.
66.
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71.
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73. Sensor is looking Electrostatic
for a change in field
capacitance in the Active
active field surface
Active
electrode
Earth
electrode
LED
indicator
Adjusting
screw
Connection
cable