-
$291.40$291.40 -
$1,228.00$1,228.00 -
$89.32$89.32 -
IDEC
S8-PR-3-T51-PP
Photoelectric, Laser Emmission, 1m Range, Retro-reflective for transparent, NCNR
$202.67$202.67 -
$2,952.00$2,952.00 -
Pepperl+Fuchs
018937
Fiber Optic Sensor, 10-30VDC, 600mm Detection Range, Light/Dark On, PNP, 30H x 30W x 102Dmm, IP67
$546.84$546.84 -
Pepperl+Fuchs
117302
Safety Thru-Beam Sensor, Transmitter, 0.2-10m Effective Detection Range, LED, 660nm Light Source, Power Supply via Control Unit, Operation on Control Units of SB4 (SafeBox), M12 5-Pin 90° Rotatable Connector, IP67, Returns are subject to Ma
$226.80$226.80 -
Pepperl+Fuchs
117304
Safety Thru-Beam Sensor, Receiver, 0.2-10m Effective Detection Range, LED, 660nm Light Source, Power Supply via Control Unit, Operation on Control Units of SB4 (SafeBox), M12 5-Pin 90° Rotatable Connector, IP67, Returns Subject to Manufactu
$288.54$288.54 -
Pepperl+Fuchs
118431
Safety Thru-Beam Sensor (Emitter), Plastic, M12 4-Pin Connector, IP67 for Operation on SB4 Series Control Units (SafeBox), Returns of This Item Must Be Approved by Manufacturer
$223.02$223.02 -
Pepperl+Fuchs
118433
Machine Safety Photoelectric Sensor, Safety Thru-Beam Sensor, Emitter: SLA29-T/116, 0.2 to 30m Detection Range (40m Threshold Range), ABS Plastic, RLA 1021 (Yellow) Painted, Terminal Compartment Connection, IP67, Returns of This Item Must Be Approved
$260.82$260.82 -
Pepperl+Fuchs
118435
Machine Safety Thru-Beam Photoelectric Sensor (Receiver), Plastic, M12 4-Pin Connector, IP67 for Operation on SB4 Series Control Units (SafeBox), Returns of This Item Must Be Approved by Manufacturer
$303.66$303.66 -
Pepperl+Fuchs
118437
Machine Safety Photoelectric Sensor, Safety Thru-Beam Sensor, Receiver: SLA29-R/116, LED Functional Display and Pre-Fault Indicator on the Receiver, 0.2 to 30m Detection Range, (40m Threshold Range), ABS Plastic, RLA 1021 (Yellow) Painted, Terminal
$342.72$342.72
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:
- Background Suppression: Can ignore objects beyond a set distance, focuses close range
- Color or Contrast Sensors: Detects specific colors or contrast differences
- Distance Measuring Sensors: Mesaure the distance to an object
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