Skip to main content

Maximum range, uncompromising precision

DTECT® Presence Beam: Photoelectric through-beam sensors

With industrial sensors, there's one thing that matters most: absolute process reliability. While many sensors quickly reach their limits in harsh environments – including factors like dust, steam, vibrations, or strong ambient light – SensoPart's photoelectric through-beam sensors deliver reliable results at maximum range, even under difficult conditions. Thanks to their robust design and easy system integration, our photoelectric through-beam sensors prove their worth in a wide variety of industrial applications and help you avoid downtime, readjustments, and rejections.

Optimize your production processes with photoelectric through-beam sensors from our DTECT® series and benefit from intelligent sensor technology Made in Germany.

Go to through-beam sensors


DTECT Presence Beam

Photoelectric through-beam sensors from SensoPart for particularly long distances

Unlike with photoelectric retro-reflective sensors and photoelectric diffuse sensors, the emitter and receiver in photoelectric through-beam sensors are positioned separately from one another so they are located opposite each other. This creates a stable light beam for very long ranges that switches with precision. This means our photoelectric through-beam sensors can ensure accurate, error-free detection even in fast processes – regardless of the material, shape, or surface properties of the object.

The sensors are available in different versions – for example, with red light (choose between LED or laser) or infrared – and feature robust, industry-proven housings and common types of connections.

SensoPart's photoelectric through-beam sensors can be flexibly integrated into existing systems and precisely adjusted to suit your application. 

The advantages you enjoy with photoelectric through-beam sensors from SensoPart

  • Maximum range: stable detection over distances of several meters
  • Precision object detection: clear separation of the emitter and receiver prevents false detections
  • High interference immunity: precision detection even in the presence of dust, steam, ambient light, or temperature fluctuations
  • Robust: stable housing and durable components for continuous use in industrial applications
  • Easy integration: Convenient operation and accurate alignment

Filter products

Series
Operating principle
Working distance min. [mm]
Working distance max. [mm]
Interface
Adjustment
Switching output
Light source
Velocity [Hz]
Connection type
Filter
Selection:
Reset all filters

Sorry, no products matching your search criteria were found.

66 Products match your search criteria

Illustration
Description
Sensor principle
Working distance min. [mm]
Working distance max. [mm]
Switching output
FSE 18-2 IM-PS-L4
Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
10000
Switching output
PNP
FSE 18-2 IM-NS-L4
Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
10000
Switching output
NPN
FSE 18-2 IM-PS-K4
Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
10000
Switching output
PNP
FSE 18-2 IM-NS-K4
Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
10000
Switching output
NPN
FLS 18W-L4
Laser-Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
50000
Switching output
FLE 18W-L4
Laser-Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
50000
Switching output
PNP
FLE 18W-L4-15
Laser-Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
50000
Switching output
PNP
FLS 18W
Laser-Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
50000
Switching output
FLE 18W
Laser-Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
50000
Switching output
PNP
FLS 18-L4
Laser-Einweglichtschranke
Sensor principle
Photoelectric through-beam sensor
Working distance min. [mm]
0
Working distance max. [mm]
50000
Switching output

Possible areas of application for DTECT® Presence Beam photoelectric through-beam sensors

Our photoelectric through-beam sensors are used wherever reliable object detection over long distances is required. Thanks to their focused light beam and low susceptibility to interference factors, they are ideal for automated processes in a wide range of applications:

Palletisation of packaging
Detection of objects on conveyor belts
Detection of packages on conveyor belts

Comparing photoelectric diffuse sensors and light barriers: Find the optimal solution 

Perhaps a photoelectric through-beam sensor is actually not the best choice for your application. Factors such as distance and surface properties, as well as environmental and mounting conditions determine which sensor principle will deliver the most accurate result. Whether it's a photoelectric retro-reflective sensor, a photoelectric diffuse sensor with background suppression, or a photoelectric diffuse sensor – even small technical details in the design and functionality can make the decisive difference during operation. 

Our overview of the various sensor principles shows you at a glance which one best suits your needs.

Decision-making tool

Discover more sensors from SensoPart

DTECT® Color

Optical color sensors detect colors and materials, even on challenging surfaces, providing valuable assistance in sorting packaging or when checking different labels. Depending on the sensor, the range is between 32 and 150 mm. 

Distance sensors for all measuring tasks: Triangulation sensors, time-of-flight sensors with IO-Link

DTECT® Distance

Our optical distance sensors reliably cover both close proximities as well as great distances. They are compatible with IO-Link and provide fast and accurate measurement, as well as precise positioning or detection – depending on the application.

DTECT® Object 3D

A sensor that combines the powerful performance of active-stereo vision with the simplicity of an optical sensor: ideal for aligning parts in vibratory conveyors, detecting missing parts in packaging, and checking for presence on conveyor lines.

Our website is available in different languages. We have detected "English" as your browser language or couldn't detect your language.

Switch language