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Omron E3Z-LR81 Laser Photoelectric Sensor BGS/FGS 2m Detection PNP

SKU: E3Z-LR81

Precision laser sensor with background suppression and 2m detection distance

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Product Overview

The Omron E3Z-LR81 is a precision laser photoelectric sensor featuring advanced Background Suppression (BGS) and Foreground Suppression (FGS) technologies. This sensor uses a laser light source for extremely precise detection, making it ideal for applications requiring accurate distance measurement and consistent detection regardless of target color or surface characteristics. The E3Z-LR81 offers a detection distance of 2 meters with BGS function, which allows the sensor to ignore background objects and only detect targets within a specific range. The sensor employs a PNP transistor output for compatibility with PLC inputs commonly used in Asian markets. The compact design with a 3-wire connection makes installation straightforward, and the visible laser spot enables easy alignment and positioning during setup. This laser sensor is particularly suitable for precision detection applications in electronics manufacturing, automotive parts assembly, and packaging machinery where consistent detection of small targets or precise positioning is critical.

  • SKU: E3Z-LR81
  • Series: E3Z-LR81
  • Voltage: 12-24 VDC
  • I/O: 100 I/O

Best-Fit Applications

  • Precision part positioning
  • Small component detection
  • Label sensor for packaging
  • PCB component detection
  • Color-independent detection
  • Thickness measurement
  • Slot detection
  • Edge guiding

Buying Checklist

  • Laser precision for accurate detection
  • Background suppression eliminates false triggers
  • Color-independent detection reliability
  • Compact size for confined spaces
  • Easy alignment with visible laser spot
  • IP67 rating for harsh environments
  • High response speed for fast processes

Technical Specifications

Sensing Method Background/Foreground Suppression
Sensing Distance 2 m (BGS mode)
Light Source Laser (655 nm)
Output Type PNP Open Collector
Output Current 100 mA max.
Power Supply 12-24 VDC
Current Consumption 40 mA max.
Response Time 1 ms max.
Operating Temperature -25 to 55 °C
Protection IP67
Dimensions 20 x 12 x 8 mm (compact body)

FAQ for E3Z-LR81

What is the difference between BGS and FGS modes?
BGS (Background Suppression) ignores objects beyond a set distance, while FGS (Foreground Suppression) ignores objects closer than a set distance.
Is the E3Z-LR81 safe for human exposure to the laser?
The E3Z-LR81 is a Class 1 laser product that is eye-safe under normal operating conditions.
Can this sensor detect transparent objects?
Yes, the background suppression function can be effective for detecting transparent objects depending on the application setup.

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