Omron E3S-DBN21 Transparent Object Photoelectric Sensor

USD 156.43

Retro-reflective sensor for transparent objects like PET and glass. Features M.S.R. function, 0.5 ms response, and IP69K rating for reliable industrial use.

SKU Omron-E3S-DBN21 Category
Industrial Sensors / Photoelectric Sensors

Omron E3S-DBN21 Transparent Object Photoelectric Sensor

Model Identifier E3S-DBN21
Official Part Number E3S-DBN21
GTIN Standard NA

Technical Overview

The Omron E3S-DBN21 is a compact, retro-reflective photoelectric sensor specifically engineered for the reliable detection of transparent objects such as glass bottles and clear films. Utilizing a polarized red LED light source and an advanced M.S.R. (Mirror Surface Rejection) function, it ensures highly accurate sensing without close-range dead zones. It features a convenient Smart Teach-In configuration for rapid setup, a high-speed 0.5 ms response time, and an NPN antivalent (Light-ON/Dark-ON) output. Housed in a durable ABS/PBT enclosure, it offers exceptional environmental resistance with IP67 and IP69K washdown ratings, making it ideal for rigorous industrial and food processing environments.

Key Features

  • Optimized for reliable transparent object detection (e.g., PET, glass, clear packaging)
  • Retro-reflective sensing with M.S.R. (Mirror Surface Rejection) function
  • Smart Teach-In push-button function for simplified sensitivity adjustment
  • NPN complementary outputs providing simultaneous Light-ON and Dark-ON signals
  • Ultra-fast 0.5 ms maximum response time suitable for high-speed processes
  • Standard M12 4-pin quick-disconnect connector for easy integration
  • Rugged IP67 and IP69K rated enclosure built for intense washdown conditions
  • No dead zone between the sensor and reflector

Requires a 10 to 30 VDC supply voltage with a maximum current consumption of 30 mA (720 mW max).

Technical Specification Matrix

ParameterValue
Sensor TypePhotoelectric (Transparent Object Detection)
Sensing MethodRetro-reflective with M.S.R. function
Sensing Distance0 to 3.5 m (when using E39-R8 reflector)
Light SourcePolarized Red LED
Output TypeNPN Complementary (Light-ON / Dark-ON)
Supply Voltage10 to 30 VDC
Current Consumption30 mA max. (720 mW max.)
Response Time0.5 ms max.
Connection MethodM12 Connector (4-pin)
Sensitivity AdjustmentSmart Teaching
Enclosure RatingIEC IP67 / DIN 40050-9 IP69K
Operating Temperature-25°C to +60°C

Industrial Applications

1. High-Speed Beverage Bottling Lines

Detecting clear glass or PET bottles moving on high-speed conveyor belts prior to filling or labeling stations.

Problem Solved

Standard optical sensors struggle to detect transparent containers reliably, leading to false triggers or machinery jams. The E3S-DBN21 utilizes polarized red light and its M.S.R. function to definitively identify clear bottles, while its IP69K rating ensures it survives the intense, high-temperature washdowns typical of food and beverage facilities.

Transparent DetectionIP69K WashdownRetro-reflective0.5 ms Response TimePET Bottle Detection

2. Pharmaceutical Glass Vial Verification

Monitoring the presence and precise positioning of clear glass vials in automated medicine dispensing and capping machines.

Problem Solved

Small, clear vials can cause missed detections in fast automated lines. The sensor's Smart Teach feature provides optimized threshold settings for highly transparent materials, and its ultra-fast 0.5 ms response time guarantees reliable operation at high throughput speeds.

Smart Teach-In0.5 ms Response TimePolarized Red LEDNPN ComplementaryM.S.R. Function

3. Clear Film and Packaging Detection

Verifying the presence of clear plastic clamshell packaging or transparent carrier films in electronics or consumer goods manufacturing.

Problem Solved

Thin, highly transparent films are notoriously challenging to detect and often fall into sensor 'dead zones'. The specialized optical system of the E3S-DBN21 eliminates close-range dead zones, ensuring robust detection of delicate transparent wraps and preventing downstream packaging errors.

Clear Film DetectionZero Dead ZoneNPN OutputM12 ConnectorPhotoelectric Sensing
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