Omron E3Z-G81 0.5M Photoelectric Sensor
Omron E3Z-G81 0.5M is a grooved through-beam photoelectric sensor designed around a fixed 25 mm sensing gap. Its 940 nm infrared LED establishes the optical path between the transmitting and receiving elements, while interruption by a target creates the switching condition. The supplied specification row lists NPN output with selectable Light-ON and Dark-ON operation for different machine-control requirements. The sensor operates from 12 to 24 VDC and includes a 0.5 m pre-wired cable. Current consumption is specified at 25 mA maximum, while response time is 1 ms maximum. Within the E3Z Series, the E3Z-G81 0.5M provides a short-cable configuration for grooved through-beam sensors across Omron Industrial Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-G81 0.5M |
Omron E3Z-G81 0.5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through beam |
| Shape | Grooved Type |
| Sensing Distance | 25 mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | NPN |
| Connection Method | Pre Wired Cable, 0.5m Length |
| Current Consumption | 25 mA max. |
| Light Source (Wavelength) | Infrared LED (940 nm) |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | 1 ms max. |
| Degree Of Protection | IEC: IP64 |
| Material | ABS (Acrylonitrile Butadiene Styrene) |
| Material Lens | Denatured Polyarylate |
| Features | Transparent detection |
| Weight | 65g |
The Omron E3Z-G81 0.5M Photoelectric Sensor uses a grooved through-beam arrangement with a fixed 25 mm sensing distance. Its 940 nm infrared LED establishes the optical beam between the opposing sensing elements, while interruption by a target produces the switching condition. The supplied specification row lists NPN output with selectable Light-ON and Dark-ON operation. 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 25 mA maximum, while response time is 1 ms maximum. ABS and denatured polyarylate are listed as construction materials, and the supplied specification states IP64 enclosure protection for this grooved configuration.
For an Omron grooved sensor requiring the supplied NPN architecture and a fixed 25 mm sensing gap, the applicable model is the E3Z-G81. The integrated slot provides a defined sensing position without requiring alignment between separately mounted optical elements. Selectable Light-ON and Dark-ON switching supports different control sequences, while operation from 12 to 24 VDC suits common industrial control equipment. The short cable is useful where the sensor is installed close to a junction or machine wiring point. Its configuration also matches searches for an Omron 25 mm slot sensor and Omron compact through-beam photoelectric sensor. For the supplied 2 m E3Z-G81 version with PNP output, see the E3Z-G81 2M.
