E3Z-L81

Overview of Omron E3Z-L81

The Omron E3Z-L81 is a compact diffuse-reflective photoelectric sensor with a built-in amplifier, optimized for reliable detection of objects within a sensing distance of 60 to 120 mm on white paper (100 × 100 mm). It features a red LED light source and a 2.5 mm diameter spot size at a sensing distance of 90 mm. The sensor offers selectable light-ON or dark-ON output modes and includes protective circuits such as reverse polarity protection and output short-circuit protection.

Key Features of Omron E3Z-L81

• Sensing Distance: 60 to 120 mm on a white paper target of 100 × 100 mm.
• Light Source: Red LED with a wavelength of 650 nm for clear detection.
• Output: PNP open collector output with a maximum load current of 100 mA and selectable light-ON/dark-ON modes.
• Response Time: Fast operate or reset time of 1 ms or less to enable high-speed detection.
• Protection Circuits: Reverse polarity protection, output short-circuit protection, and reverse output polarity protection enhance durability and safety.
• Degree of Protection: IP67 rated housing for resistance to dust and water ingress, suitable for industrial applications.
• Connection: Pre-wired cable with 2 m length for easy installation.
• Operating Environment: Operating temperature range from -25°C to 55°C with 35% to 85% humidity (non-condensing).
• Indicators: Orange operation indicator and green stability indicator for operational status.

Technical Specs of Omron E3Z-L81

Model	E3Z-L81
Sensing Method	Diffuse-reflective
Sensing Distance	60 to 120 mm (white paper 100 × 100 mm)
Light Source	Red LED (650 nm)
Output Type	PNP open collector
Load Voltage	Max. 26.4 VDC
Load Current	Max. 100 mA
Response Time	1 ms maximum
Operating Voltage	12 to 24 VDC ±10%
Protection	Reverse polarity, output short-circuit, reverse output polarity protection
Degree of Protection	IEC IP67
Weight	Approx. 65 g
Connection	Pre-wired, 2 m cable
Operating Temperature	-25 to 55 °C (no icing or condensation)
Ambient Humidity	35% to 85% (non-condensing)

Applications / Use Case

The Omron E3Z-L81 sensor is ideal for object detection in industrial automation, packing lines, and quality control systems where reliable detection of small or medium-distance targets is required.

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Verification Links:
https://assets.omron.eu/downloads/latest/datasheet/en/e3z_compact_photoelectric_sensor_with_built-in_amplifier_datasheet_en.pdf
https://www.ia.omron.com/product/item/529/
https://www.mouser.com/ProductDetail/Omron-Automation-and-Safety/E3Z-L81?qs=TwPrcXezm73VBFf36G9wTA%3D%3D