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_-_o500.gp_-_diffuse_sensor_-_cable_19__67563.jpg

    Baumer

    O500.RP-PV1T.72CU

    Retroreflective Sensor, Polarization Filter, 10-30VDC, 7.5 Actual Range Sb, 8m Nominal Range Sn, Pulsed PinPoint LED, 630 nm, PNP, qTeach, Light/Dark Operate, 2m 4-Pin Cable, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 60°C O

  • baumer_-_o500.gp_-_diffuse_sensor_-_m12_4_pin_13__16157.jpg

    Baumer

    O500.RP-PV1T.72O

    Retroreflective Sensor, Polarization Filter, 10-30VDC, 7.5 Actual Range Sb, 8m Nominal Range Sn, Pulsed PinPoint LED, 630 nm, PNP, qTeach, Light/Dark Operate, M12 4-Pin Connector, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 6

  • baumer_-_o500.gp_-_diffuse_sensor_-_cable_20__21203.jpg

    Baumer

    O500.RP.T-GW1J.72CU

    Retroreflective Sensor, Polarization Filter, Transparent Object Detection, 10-30VDC, 5.5m Actual Range Sb, 6m Nominal Range Sn, Pulsed PinPoint LED, 630 nm, Push-Pull, Teach-In and IO-Link, Light/Dark Operate, 2m 4-Pin Cable, Plastic Housin

  • baumer_-_o500.gp_-_diffuse_sensor_-_m12_4_pin_14__10170.jpg

    Baumer

    O500.RP.T-GW1J.72O

    Retroreflective Sensor, Polarization Filter, Transparent Object Detection, 10-30VDC, 5.5m Actual Range Sb, 6m Nominal Range Sn, Pulsed PinPoint LED, 630 nm, Push-Pull, Teach-In and IO-Link, Light/Dark Operate, M12 4-Pin Connector, Plastic H

  • baumer_-_o500.gp_-_diffuse_sensor_-_cable_21__79121.jpg

    Baumer

    O500.RR-GD1Z.72CU

    Retroreflective Sensor, Polarization Filter, 10-30VDC, 7.5 Actual Range Sb, 8m Nominal Range Sn, Pulsed Red LED, 630 nm, Push-Pull, Dark Operate, 2m 4-Pin Cable, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 60°C Operating Temp

  • baumer_-_o500.gp_-_diffuse_sensor_-_m12_4_pin_15__22019.jpg

    Baumer

    O500.RR-GD1Z.72O

    Retroreflective Sensor, Polarization Filter, 10-30VDC, 7.5 Actual Range Sb, 8m Nominal Range Sn, Pulsed Red LED, 630 nm, Push-Pull, Dark Operate, M12 4-Pin Connector, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 60°C Operating

  • baumer_-_o500.gp_-_diffuse_sensor_-_cable_22__51044.jpg

    Baumer

    O500.RR-GL1Z.72CU

    Retroreflective Sensor, Polarization Filter, 10-30VDC, 7.5 Actual Range Sb, 8m Nominal Range Sn, Pulsed Red LED, 630 nm, Push-Pull, Light Operate, 2m 4-Pin Cable, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 60°C Operating Tem

  • baumer-o300.sp-gw1b.72n_4__58112.jpg

    Baumer

    O500.RR-GL1Z.72O

    Retroreflective Sensor, Polarization Filter, 10-30VDC, 7.5m Actual range Sb, 8m Nominal Range Sn, Pulsed Red LED, 630 nm, Push-Pull, Light Operate, M12 4-Pin Connector, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 60°C Operati

  • baumer_-_o500.gp_-_diffuse_sensor_-_cable_23__99988.jpg

    Baumer

    O500.SP-GW1B.72CU

    SmartReflect Light Barrier, 10-30VDC, 60-600mm Background Position Sde, Pulsed PinPoint LED, 630 nm, Push-Pull, qTeach/External, Light/Dark Operate, 2m 4-Pin Cable, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 60°C Operating T

  • baumer_-_o500.gp_-_diffuse_sensor_-_cable_24__12811.jpg

    Baumer

    O500.SP-GW1J.72CU

    SmartReflect Light Barrier, 10-30VDC, 60-600mm Background Position Sde, Pulsed PinPoint LED, 630 nm, Push-Pull, Teach-In and IO-Link, Light/Dark Operate, 2m 4-Pin Cable, Plastic Housing, PMMA Optics, 45 x 18 x 32mm (HWD), -25 to 60°C Operat

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