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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Product Price Rating Action
  • leuze-ht46cl_1__82166.jpg

    Leuze

    50134608

    HT46CL2/4P-M12, Non-Cancellable / No Returns

    Diffuse Sensor with Background Suppression, 0.05-1.2m, Laser, Red, PNP, M12, Plastic, 4-Pin, NCNR

  • leuze-prk-prkl3c_5__83034.jpg

    Leuze

    50133739

    PRK3CL1.A3/4P-M8, Non-Cancellable / No Returns

    Polarized Retro-Reflective Photoelectric Sensor, 0-3m, Laser, Red, Connector, M8, Metal, 4-Pin, NCNR

  • leuze_ht3cl2-4p-200-m8__85266.jpg

    Leuze

    50129398

    HT3CL2/4P-200-M8, Non-Cancellable / No Returns

    Diffuse Sensor with Background Suppression, 0.015-0.55m, Laser, Red, PNP, Cable, M8, 4-Pin, NCNR

  • leuze-prk-prkl3c_6__00238.jpg

    Leuze

    50133738

    PRK3CL1.A3/4-M8.3, Non-Cancellable / No Returns

    Polarized Retro-Reflective Photoelectric Sensor, 0-3m, Laser, Red, PNP, Connector, M8, Metal, 3-Pin, NCNR

  • leuze-prk-prkl3c_7__80950.jpg

    Leuze

    50133698

    PRK3CL1.T3/4-M8.3, Non-Cancellable / No Returns

    Polarized Retro-Reflective Photoelectric Sensor, 0-0.5m, Laser, Red, Connector, M8, Metal, 3-Pin, NCNR

  • leuze-prk-prkl3c_8__85249.jpg

    Leuze

    50133688

    PRK3CL1.T3/4T-M8, Non-Cancellable / No Returns

    Polarized Retro-Reflective Photoelectric Sensor, 0-0.5m, Laser, Red, PNP, Connector, M8, Metal, 4-Pin, NCNR

  • takex_jseries_4__14578.jpg

    Takex

    JR07

    Diffuse Reflective Sensor, 24-240VAC/DC ±10? 50/60Hz Power Supply, 700mm (200-mm Square White Drawing Paper), Translucent Opaque Detection Object, Relay Output 1a, Light ON/Dark ON Selectable Switch (Integrated on Bottom of Sensor Unit), Re

  • vdm28_3__81409.png

    Pepperl+Fuchs

    232763

    VDM28-8-L1-IO/73c/110/122, Suggested Replacement for 218499 (VDM28-8-L-IO/73c/110/122)

    Distance Photoelectric Sensor, Laser, 8m DistancePulse Ranging Technology (PRT), IO Link, Class I

  • pf_r2000_870x630_2__06563.jpg

    Pepperl+Fuchs

    70112345

    OBD30M-R2000-4EP-V1V17-1L (Was # 275236), Non-Cancellable, No Returns per Manufacturer

    Detection Sensor, 2-D Laser Scan, 0.1-30m, IP65, 30 Hz Scan Frequency, High Angle Resolution

    $4,263.17
    $4,263.17

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