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_-_fpdk_10n5135_-_retroreflective_sensor__02691.jpg

    Baumer

    FPDK 10N5135

    Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, Potentiometer, 240°, NPN, Light/Dark Operate, 2m 4-Pin Cable, 27 x 10.4 x 16.3mm (HWD), Plastic ASA Housing, PMMA Optics, -20° to +65°C,

  • baumer_-_fpdk_10p5130_-_retroreflective_sensor_1__77752.jpg

    Baumer

    FPDK 10P5130

    Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, PNP, Light/Dark Operate, 2m 4-Pin Cable, 27 x 10.4 x 16.3mm (HWD), Plastic (ASA) Housing, PMMA Optics, -20° to +65°C, IP65

  • baumer_-_fpdk_10p5135_-_retroreflective_sensor__91145.jpg

    Baumer

    FPDK 10P5135

    Retroreflective Sensor, Miniature, Pulsed Red LED, 10-30VDC, 3.5m Actual Range Sb, 4m Nominal Range Sn, Potentiometer, 240°, PNP, Light/Dark Operate, 2m 4-Pin Cable, 27 x 10.4 x 16.3mm (HWD), Plastic ASA Housing, PMMA Optics, -20° to +65°C,

  • baumer_-_fpdk_14n5101_-_retroreflective_sensor__66402.jpg

    Baumer

    FPDK 14N5101

    Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 7m Actual Range Sb, 7.2m Nominal Range Sn, NPN, Light/Dark Operate, 2m 4-Pin Cable, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67

  • baumer_-_fpdk_14n5101-s14_-_retroreflective_sensor__30285.jpg

    Baumer

    FPDK 14N5101/S14

    Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 7m Actual Range Sb, 7.2m Nominal Range Sn, NPN, Light/Dark Operate, M12 4-Pin Connector, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67

  • baumer_-_fpdk_14n5111_-_retroreflective_sensor__21053.jpg

    Baumer

    FPDK 14N5111

    Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 3.2m Actual Range Sb, 3.8m Nominal Range Sn, NPN, Light/Dark Operate, 2m 4-Pin Cable, 43 x 14.8 x 31mm HWD Rectangler, Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67

  • baumer_-_fpdk_14n5111-s14_-_retroreflective_sensor__51067.jpg

    Baumer

    FPDK 14N5111/S14

    Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 3.2m Actual Range Sb, 3.8m Nominal Range Sn, NPN, Light/Dark Operate, M12 4-Pin Connector, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67

  • baumer_-_fpdk_14n5111-s35a_-_retroreflective_sensor__62973.jpg

    Baumer

    FPDK 14N5111/S35A

    Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 3.2m Actual Range Sb, 3.8m Nominal Range Sn, NPN, Light/Dark Operate, M8 4-Pin Connector, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67

  • baumer_-_fpdk_14p5101_-_retroreflective_sensor__64188.jpg

    Baumer

    FPDK 14P5101

    Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 7m Actual Range Sb, 7.2m Nominal Range Sn, PNP, Light/Dark Operate, 2m 4-Pin Cable, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67

  • baumer_-_fpdk_14p5101-s14_-_retroreflective_sensor__42930.jpg

    Baumer

    FPDK 14P5101/S14

    Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 7m Actual Range Sb, 7.2m Nominal Range Sn, PNP, Light/Dark Operate, M12 4-Pin Connector, 43 x 14.8 x 31mm (HWD), Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67

  • baumer_-_fpdk_14p5111_-_retroreflective_sensor__97607.jpg

    Baumer

    FPDK 14P5111

    Retroreflective Sensor, Standard, Pulsed Red LED, 10-30VDC, 3.2m Actual Range Sb, 3.8m Nominal Range Sn, PNP, Light/Dark Operate, 2m 4-Pin Cable, 43 x 14.8 x 31mm HWD Rectangle, Plastic (ASA, MABS) Housing, PMMA Optics, -20° to +65°C, IP67

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