Omron E3Z-B81 0.5M Photoelectric Sensor
Omron E3Z-B81 0.5M is a retro-reflective photoelectric sensor without the MSR function, specified for clear plastic bottle sensing across an 80 to 500 mm range. Its 660 nm red LED establishes the optical sensing path, while the PNP output transfers the switching state to compatible PLC inputs and machine-control equipment. Light-ON or Dark-ON operation can be selected to suit the required logic. The sensor operates from 12 to 24 VDC and includes a 0.5 m pre-wired cable for short connection runs. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. Within the E3Z Series, the E3Z-B81 0.5M provides the short-cable PNP configuration. Related transparent object photoelectric sensors are available across Omron Automation Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-B81 0.5M |
Omron E3Z-B81 0.5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retro-reflective without M.S.R. function |
| Shape | Square |
| Sensing Distance | 80 to 500 mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre Wired Cable, 0.5M Length |
| Current Consumption | 30 mA Max |
| Light Source (Wavelength) | Red LED (660 nm) |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | 1 ms max. |
| Degree Of Protection | IEC: IP67 |
| Material | Polybutylene terephthalate (PBT) |
| Material Lens | Denatured Polyarylate |
| Features | Transparent detection |
| Weight | 65g |
The Omron E3Z-B81 0.5M Photoelectric Sensor uses retro-reflective sensing without the MSR function for clear plastic bottle sensing across an 80 to 500 mm range. Its 660 nm red LED establishes the optical path, while the PNP output transfers the switching state to compatible industrial control equipment. Light-ON or Dark-ON operation can be selected to suit the required control logic. The sensor operates from 12 to 24 VDC and includes a 0.5 m pre-wired cable for short connection runs. Current consumption is specified at 30 mA maximum, while response time is 1 ms maximum. The square housing uses PBT and denatured polyarylate materials, and the supplied specification states IP67 enclosure protection.
For an Omron transparent object sensor requiring PNP output, selectable switching logic, and a short pre-wired connection, the relevant model is the E3Z-B81. The listed 80 to 500 mm range supports close reflector-based sensing of clear plastic bottles. Its 12 to 24 VDC supply range supports common DC control systems, while the red LED provides a visible optical source for setup. The specification also matches searches for an Omron PNP clear bottle sensor and Omron short-range retro-reflective sensor. For an E3Z-B81 version with a 2 m pre-wired cable and a supplied 500 mm to 2 m range, see the E3Z-B81 2M. The sensing ranges have been retained exactly as supplied.
