The Autonics BEN3M-PDT is a polarized retro-reflective photoelectric sensor designed for stable detection of transparent, glossy, or reflective objects. With a 3-meter sensing range, fast response time, and NPN/PNP transistor output, it is widely used in packaging, bottling, and conveyor automation systems.

Key Features

• Polarized retro-reflective sensing type

• Sensing distance up to 3 m

• Reliable detection of transparent & shiny objects

• DC power, solid-state transistor output

• NPN & PNP open-collector outputs

• Light-ON / Dark-ON selectable

• Fast response time (≤ 1 ms)

• Stable operation under ambient light

Technical Specifications

Applications

• Detection of transparent bottles

• Packaging & bottling machines

• Conveyor object detection

• Counting & positioning systems

• Material handling equipment

• OEM automation machinery

What’s in the Box?

• Autonics BEN3M-PDT Photoelectric Sensor

• Polarized reflector (standard)

• Mounting bracket & hardware

• Adjustment screwdriver

• Instruction manual

FAQ 

Q1. What does “PDT” mean in BEN3M-PDT?
PDT indicates a polarized retro-reflective type, suitable for transparent or glossy objects.

Q2. What is the maximum sensing distance?
Up to 3 meters, depending on the reflector and alignment.

Q3. Can it detect transparent objects like PET bottles?
Yes, polarized optics help reliably detect transparent and shiny objects.

Q4. Does it support both NPN and PNP outputs?
Yes, it provides NPN & PNP open-collector outputs.

Q5. Is it suitable for high-speed conveyors?
Yes, with ≤ 1 ms response time, it works well in high-speed applications.