Photoelectric Sensors

Photoelectric sensors detect the distance, absence or presence of an object. These sensors are great for sensing long distances and detecting most materials.

Additional Sensor Categories:
Proximity | Ultrasonic | Pressure | Temperature | Level | Tilt

 

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  • idec_-_sa2e_-_cable_-_photoelectric_sensor_1__31003.jpg

    IDEC

    SA2E-BN3-2M

    Replacement for SA1E-BN1, SA1E-BN1-2M, SA1E-BN1-5M, SA1E-BN2, SA1E-BN2-2M and SA1E-BN2-5M

    Miniature Photoelectric Sensor with Background Suppression (BGS), 10-350mm/20-350mm Adjustable Sensing Range, Red LED, NPN, Light On/Dark On (Selectable), 2m Cable, IP67, 10.8 x 19.5 x 31.5mm (WDH) Excluding LEDs and Controls

  • Baumer_OR18_CV_Primary.png

    Baumer

    OR18.ZI-NW1Z.71CV/B013

    11157798

    Diffuse Reflective Sensor, Pulsed Infrared Diode, 12-30VDC, 0-300mm Sensing Distance Tw, No Adjustment, NPN, Light/Dark Operate, 2m 4-Pin Cable, Ø18 x 44.8mm, Plastic, -25 to +55°C, IP67

  • idec_-_sa2e_-_cable_-_photoelectric_sensor_1_1_5__98274.jpg

    IDEC

    SA2E-PN3-2M

    Replacement for SA1E-PN1, SA1E-PN1-2M, SA1E-PN1-5M, SA1E-PN2, SA1E-PN2-2M and SA1E-PN2-5M

    Miniature Photoelectric Polarized Retroreflective Sensor, Red LED, NPN, 5m Sensing Range (Depends on the Reflector), Opaque Detectable Object, 0.5ms, Single Turn Sensitivity Control, Light On/Dark On (Selectable), 2m Cable, IP67, –30 to +55

  • Baumer_OR18_CV_Primary.png

    Baumer

    OR18.ZI-NW1Z.71CV/B012

    11157792

    Diffuse Reflective Sensor, Pulsed Infrared Diode, 12-30VDC, 0-80mm Sensing Distance Tw, No Adjustment, NPN, Light/Dark Operate, 2m 4-Pin Cable, Ø18 x 44.8mm, Plastic, -25 to +55°C, IP67

  • Baumer_OEDK_5105_Primary.png

    Baumer

    OEDK 10P5105

    10165140

    Thru-Beam Sensor, Receiver, 11-30VDC, 8m Actual Range Sb, 270° Potentiometer, PNP, Light/Dark Operate, 2m 4-Pin Cable, 10.4 x 27 x 14mm (WxHxD), Plastic (ASA), -10 to +50°C, IP65, Emitter Sold Separately

  • pepperl_fuchs_-_200958_-_sensor__93106.jpg

    Pepperl+Fuchs

    200958

    WTS10-12/20/105

    Diffuse Reflective Sensor, 10-30VDC, 2-12mm Detection Range, PNP, NO, Light On, Teach-in, PC + ABS Housing, Scratch Resistant Mineral Glass Lens Optical Face, M12 5-pin Connector, IP67

  • Baumer_FVDM_Primary.png

    Baumer

    FVDM 15P5130

    10234519

    Fiber Optic Sensor, Pulsed Infrared Diode, 10-30VDC, 20-Turn Potentiometer, PNP, Light/Dark Operate, 2m 4-Pin Cable, 15 x 60 x 45mm (WxHxD), Die-Cast Aluminum, -25 to +65°C, IP65, Fiber Optic Cable Sold Separately

Photoelectric sensors detect the distance, absence or presence of an object. These sensors are great for sensing long distances and detecting most materials.

Additional Sensor Categories:
Proximity | Ultrasonic | Pressure | Temperature | Level | Tilt

 

How Does a Photoelectric Sensor Work?

Generally a photoelectric sensor consists of the following:

  • Transmitter - emits the light beam
  • Receiver - detects the light beam and converts it to an electrical signal

Photoelectric sensors detect changes in the light beam caused by the presence/absence, movement or properties of an object.

Types of Photoelectric Sensors:

  • Through-Beam (Thru-Beam)
    • Transmitter and receiver are two separate units that are directly opposite of each other. The sensor detects when an objects breaks the light beam
    • Great for long distance detection
    • Ideal for conveyors, counting or monitoring door openings
  • Retroreflective (Reflective Mode)
    • Transmitter and receiver are in one housing; light beam is reflected back by a reflector. Detection is triggered when an object breaks the beam.
    • Medium range detection and easier to install than a through beam
    • Ideal for package detection and pallet positioning
  • Diffuse (Proximity Mode)
    • The transmitter and receiver in one housing; the sensor detects light reflected directly off the target object (no reflector needed)
    • Best for short range applications
    • Ideal for detecting objects on assembly lines, verifying presence or checking fill level
  • Specialized Types:

Categories Related to Photoelectric Sensors:

  • Stack lights - signal towers visually communicate the data or alerts that the photoelectric sensors are generating
  • Smart relays - photoelectric sensors provide input signals which can process the data and control outputs
  • Pushbuttons and estops - if your sensor detects a fault, an operator can use a pushbutton to reset the system
  • HMIs - HMIs can dispay the data from the photoelectric sensor which allows you to monitor processes