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Omron E3S-AR31 Photoelectric Sensor - Retro-reflective

Omron E3S-AR31 retro-reflective photoelectric sensor with 2m sensing distance.

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ManufacturerOmron

Part numberE3S-AR31

Sensing Method Retro-reflective

Sensing Distance 0 to 2 m

Output NPN Open Collector (3-wire)

Light Source Infrared LED

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Retro-reflective sensing Up to 2m sensing distance 3-wire NPN output Infrared LED light source Compact and easy to mount Reliable object detection

Product description

The Omron E3S-AR31 is a compact retro-reflective photoelectric sensor designed for reliable detection of objects. It offers a sensing distance of up to 2 meters, suitable for moderate-range applications. This sensor features a 3-wire NPN output for straightforward integration into control systems.

This sensor is ideal for applications requiring the detection of objects on conveyor belts, in packaging machines, and for general presence monitoring in industrial environments. Its retro-reflective design eliminates the need for a separate reflector in many installations.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Omron E3S-AR31. We offer quality surplus components to help your business maintain efficient operations.

Technical specifications

Sensing Method	Retro-reflective
Sensing Distance	0 to 2 m
Output	NPN Open Collector (3-wire)
Light Source	Infrared LED
Supply Voltage	10 to 30 VDC
Max Load Current	100 mA

Common applications

Object detection

Presence sensing

Conveyor systems

Packaging machinery

Assembly lines

Material handling

Industrial automation

Compatible systems

PLC inputs (NPN compatible) Basic automation control Presence monitoring systems

Also known as

Omron E3S sensor E3S-AR31 photoelectric Omron 2m retro-reflective

Replaces / compatible with

Direct replacement for Omron E3S series retro-reflective sensors with similar sensing distances and 3-wire NPN output.

Technical note

Expert tip

Requires a retro-reflector (sold separately) for effective object detection in retro-reflective mode.

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Frequently asked questions

What is the sensing distance and output configuration for the Omron E3S-AR31 photoelectric sensor?

The Omron E3S-AR31 photoelectric sensor has a sensing distance of up to 2 meters. It utilizes a 3-wire NPN open-collector output for integration into control systems.