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_fhdk04_870x630_1__00677.jpg

    Baumer

    FHDK 04G6102/KS35A

    Subminiature Diffuse Sensor with Background Suppression (BGS), Pulsed Point Source LED, 50mm Tw Range, 11-30VDC, Light Operate, Push-Pull, 50mA, 200mm Flylead Connector M8 4-Pin, 44.8 x 4 x 6.2mm (HWD), ASA Housing, PMMA Optics, -10 to +50°C, IP65

  • baumer_fhdk07_870x630_1__61696.jpg

    Baumer

    FHDK 07P6901

    Subminiature Diffuse Sensor, Background Suppression (BGS), Pulsed Red LED, 10-60mm Tw Sensing Dist., 10-30VDC, Light/Dark Operate, PNP, <100mA, 2m Cable Bottom Side, 16.2 x 8 x 10.8mm (HWD), Plastic Housing, PMMA Optics, -20 to +50°C, IP65

  • baumer_-_fpdk_10n5135-s35a_-_retroreflective_sensor__97113.jpg

    Baumer

    FPDK 10N5135/S35A

    Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, Potentiometer, 240°, NPN, Light/Dark Operate, M8 4-Pin Connector, 27 x 10.4 x 16.3mm (HWD), Plastic ASA Housing, PMMA Optics, -20° to +6

  • Baumer_FZAM_08_S35_Primary.png

    Baumer

    FZAM 08P3002/S35L

    Diffuse Sensor With Intensity Difference- Subminiature, < 80 mm Sensing Distance, Pulsed Infrared Diode, PNP, NO Sensitivity Adjustment, M8 Connector (3 Pin), IP 65

  • Baumer_O300_RR_CU_Primary.jpg

    Baumer

    O300.GP-GW1B.72CU

    Diffuse Sensor with Background Suppression (BGS), Pulsed PinPoint LED, 10-30VDC, 30-200mm Sensing Range, qTeach/External Sensing Adjustment, Light/Dark Operate, Push-Pull, 2m 4-pin Cable, IP67, 32.3 x 12.9 x 23mm (HWD)

  • baumer-om20-30-photo-sensor_9__48263.jpg

    Baumer

    OM20-P0120.HH.TXN

    Photoelectric Distance Sensor, 16-120mm, 12-28VDC, RS485, Modbus RTU, Teach-In, Point Beam, Laser Class 1, Pulsed Red Laser Diode, Die-Cast Zinc, M8 4-pin Connector, IP67, CE, cULus, -10 to +50°C Operating Temperature, 37 x 34.5 x13mm (HWD)

    $1,725.60
    $1,725.60
  • idec_-_sa2e_-_connector_-_photoelectric_sensor_1_1__46870.jpg

    IDEC

    SA2E-BP3C

    Miniature Photoelectric Sensor with Background Suppression (BGS), 10-350mm/20-350mm Adjustable Sensing Range, Red LED, PNP, Light On/Dark On (Selectable), M8 4-Pin Connector, IP67, 10.8 x 19.5 x 31.5mm (WDH) Excluding LEDs and Controls

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