Electrical & Electronic Symbols

Electronic Sensor Symbols

The sensors are transducers and electronic detectors activated by the energy delivered by a system and that in turn deliver another type of energy to another different system. The transformed energy may be of physical, chemical or biological origin.

Symbols of Electronic Sensors / Transducers / Detectors
Symbol Description Symbol Description
Transducer symbol Transducer
Generic symbol
+ Info		   Piezoelectric transducer symbol Piezoelectric transducer
+ Info
Photoresistor / LDR resistor symbol LDR Resistor / Photoresistor
Light sensitive resistor
+ Info		   Microphone symbol Microphone
Sound detector
+ Info
Liquid detector symbol / humistor symbol Humistor
Liquid detector
+ Info		   Thermoluminescence detector symbol Thermoluminescence detector
+ Info
Photodiode symbol Photodiode
Diode sensitive to visible light or infrared
+ Info		   Phototransistor symbol Phototransistor
Transistor sensitive to light
+ Info
Electrostatic sensor symbol Electrostatic sensor
Touch sensitive sensor
+ Info		   Electrostatic sensor symbol Electrostatic sensor
Touch sensitive sensor
Electrostatic sensor symbol Electrostatic sensor
Touch sensitive sensor		   Mercury switch symbol Mercury switch
Detects the inclination or motion
+ Info
NC Mercury switch symbol Mercury switch
NC - Normall-closed		   NO Mercury switch symbol Mercury switch
NO - Normally-open
Reed symbol Reed switch
Closes to the proximity of a magnet
+ Info		   Thermal element symbol Thermal element, thermomechanical transducer
Themostat with break contact symbol Themostat with break contact   Themostat with make contact symbol Themostat with make contact
IR detector symbol IR detector      

Effects Switches Symbols or Dependencies
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Level switch / Level sensor symbol Level switch / Level sensor
Actuated by the level of a fluid
+ Info		   Thermal switch symbol with relay Thermal switch
A thermal relay operated by the effect of temperature
+ Info
pressure or vacuum switch symbol Pressure or vacuum switch   Pressure sensor / Pressure switch symbol Pressure switch / Pressure sensor
Contact actuated by pressure
+ Info
Level switch / Level sensor symbol Level switch / Level sensor
Actuated by the level of a fluid		   Differential pressure switch symbol Differential pressure switch
Sail switch / Flow switch symbol Flow switch / Sail switch
Actuated by the flow of a fluid
+ Info		   Thermal switch symbol Thermal switch
Triggered by the effect of temperature
Switch detector limit symbol Switch detector limit
+ symbols		   Vibration switch symbol Vibration switch, closed on rising vibration
Flow switch symbol Flow switch
Actuated by the flow of a fluid		   Pressure switch symbol Pressure switch
Switch actuated by pressure
Gas switch symbol Switch operated by the flow of gas   Thermostat symbol Thermostat
Thermal switch, triggered by the effect of temperature
+ Info
Switch by frequency symbol Switch by frequency   Switch actuated by a pulse counter symbol Switch actuated by a pulse counter

Proximity Sensors Symbols
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Proximity switch symbol Proximity switch
Generic symbol
+ Info		   Sensitive sensor by proximity symbol Sensitive sensor by proximity
Generic symbol
Symbol of the switch by proximity to a magnet Switch by proximity to a magnet   Switch by proximity to iron symbol Switch by proximity to iron
Touch switch symbol Touch switch
+ Info		   Capacitive proximity sensor symbol Capacitive proximity sensor sensitive to solids
+ Info
Capacitive proximity sensor, NO Capacitive proximity sensor, normally open output, NO   Capacitive proximity sensor symbol, NC Capacitive proximity sensor, normally closed output, NC
Capacitive proximity sensor 3 wire symbol, NO Capacitive proximity sensor with 3 wires,
normally open output, NO		   Capacitive proximity sensor 3 wire symbol, NC Capacitive proximity sensor 3 wire,
normally closed output, NC
Symbol of Capacitive proximity sensor with 4 wires, 2 outputs (one open and one closed) Capacitive proximity sensor with 4 wires, 2 outputs (one open and one closed)   Sensor with optical fiber symbol Sensor with optical fiber
Magnetic sensor symbol Magnetic sensor      
Optocoupler symbols
Thermocouple symbols
Picture gallery of electronic sensors, transducers, detectors...
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