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.

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  • Baumer_OT500_Primary.jpg

    Baumer

    OT500.DL-GLUBJ.72F

    Photoelectric Distance Sensor-Version: Time of Flight, Measuring Distance 150...2500 mm, Teach-in and IO-Link, Pulsed Red Laser Diode, Output Circuit Push-Pull and Analog, 12...30 VDC, M12 Connector (5 Pin), IP67

  • Baumer_OT500_Primary.jpg

    Baumer

    OT500.GL-NLNVB.72F

    Diffuse Sensor With Background Suppression - Version Time of Flight, NPN, 150...2500 mm Sensing Distance, Pulsed Red Laser Diode, M12 Connector (5 Pin), 12...30VDC, IP67

  • Baumer_OT500_Primary.jpg

    Baumer

    OT500.GL-PLPLB.72F

    Diffuse Sensor With Background Suppression- Version Time of Flight, 150...2500 mm, Teach-in via qTeach or Line Teach, Pulsed Red Laser Diode, 12...30VDC, PNP, M12 Connector (5 Pin), IP67

  • Baumer_OT500_Primary.jpg

    Baumer

    OT500.GL-PLPVB.72F

    Diffuse Sensor With Background Suppression-Time of Flight Version, Sensing Distance 150...2500 mm, Pulsed Red Laser Diode, 12...30VDC, PNP, Teach-in via qTeach of Line Teach, IP67

  • Baumer_OT500_Primary.jpg

    Baumer

    OT500.SL-GDGQJ.72F

    SmartReflect Light Barrier-For Longer Ranges, Safe Barrier Principal without Reflector, Background Position Sde 500...2500 mm, Pulsed Red Laser Diode, 12...30VDC, Output Circuit Push-Pull / IO-Link, M12 Connector (5 Pin), IP67

  • baumer_-_oxh7-z0500.hi0660.vi_-_profile_sensor__44259.jpg

    Baumer

    OXH7-Z0500.HI0660.VI

    Light Section Sensor, Pulsed Red Laser Diode, 660nm, 15-28VDC, 13-66mm Width/100-5000mm Distance Measuring Range, 1540Hz, Touch Display, RS485 Adjustment, M12 8-Pin Connector, Aluminum Housing, Glass Front (Optics), -10 to +50°C Operating T

    $6,601.60
    $6,601.60
  • Baumer_OZDK_Primary.jpg

    Baumer

    OZDK 10N5101

    Diffuse Contrast Sensor-Miniature, 3...150 mm Sensing Distance, Pulsed Red Laser Diode, NPN, 5 Turn Potentiometer, 2 Meter Cable (4 Pin), IP 65

  • Baumer_OZDK_Primary.jpg

    Baumer

    OZDK 10N5150

    Diffuse Contrast Sensor-Miniature, 3...150 mm Sensing Distance, Pulsed Red Laser Diode, NPN, 5 Turn Potentiometer, 2 Meter Cable (4 Pin), IP 65

    $1,123.40
    $1,123.40

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

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