Omron E3Z-T81 2M Sensor 15m Thru-Beam Stock Available
Photoelectric sensor, rectangular housing, infrared LED, through-beam, 15 m, PNP, Light-ON/Dark-ON, 2 m cable.
Key Features and Technical Specifications
The Omron E3Z-T81 2M employs a through-beam sensing method. This means it uses a separate emitter and receiver. The emitter sends out a beam of infrared light, and the receiver detects it. When an object breaks this beam, the sensor registers its presence. This method is highly reliable and less affected by the target object’s color, surface texture, or reflectivity compared to other photoelectric sensor types.
This inherent stability makes the E3Z-T81 2M ideal for applications demanding consistent detection, such as presence confirmation on conveyor lines, positioning tasks, or counting items. Its use of an infrared LED provides robust performance, cutting through moderate levels of dust or contamination often found in industrial settings.
| Specification | Detail |
|---|---|
| Manufacturer | Omron |
| Part Number | E3Z-T81 2M |
| Sensing Method | Through-beam (Emitter + Receiver Set) |
| Sensing Distance | 15 m |
| Output Type | PNP open collector |
| Light Source | Infrared LED (870 nm) |
| Response Time | 1 ms max. (operate or reset) |
| Supply Voltage | 12 to 24 VDC ±10%, ripple (p-p) 10% max. |
| Connection Method | Pre-wired cable (2 m length) |
| Housing Material | PBT (polybutylene terephthalate) |
| Lens Material | Denatured Polyarylate |
| Protection Rating | IP67 (IEC 60529) |
| Operating Temperature | -25°C to 55°C (with no icing or condensation) |
| Certifications | CE, cULus |
Understanding the PNP Output Configuration
This specific item, the E3Z-T81 2M, features a PNP (Positive-Negative-Positive) output. In simple terms, when the sensor detects an object (beam interrupted), the output switches HIGH, connecting the load to the positive power supply voltage (+V). This configuration is common in many regions and is compatible with a wide range of PLCs and control systems, including many popular PLC models.
Knowing whether you need a PNP or NPN output is crucial for correct system integration. PNP sensors source current, while NPN sensors sink current. Ensure your control system’s input modules are designed to work with PNP sensors before purchasing. If you’re unsure, our technical support team is ready to assist you in selecting the right item for your specific setup.
Extended 15m Sensing Distance for Versatility
One of the standout features of the E3Z-T81 2M photoelectric sensor is its impressive sensing distance of up to 15 meters (approximately 49 feet). This long range offers significant flexibility in mounting options and application design. You can place the emitter and receiver far apart, making it suitable for large area monitoring, long conveyor lines, or applications where physical constraints prevent closer mounting.
This extended range doesn’t compromise accuracy. The powerful infrared LED and sensitive receiver ensure reliable detection across the entire 15-meter span. This capability allows for creative solutions in various automation scenarios, providing reliable detection where shorter-range sensors might fall short. It’s a versatile choice for diverse industrial needs.
Durable Design with Pre-Wired Convenience
The E3Z-T81 2M comes as a pre-wired model, featuring a permanently attached 2-meter cable on both the emitter and receiver units. This pre-wired design simplifies installation, eliminating the need for separate connectors and reducing potential connection errors or failures, especially in environments with vibration or moisture. The robust cable and secure connection contribute to the sensor’s overall reliability.
The sensor itself is housed in a rugged rectangular plastic casing meeting IP67 standards. This ensures protection against dust ingress and temporary water immersion, making it suitable for demanding factory floors. This built-in durability, combined with the ease of the pre-wired model, makes the E3Z-T81 2M a practical and long-lasting sensing solution. Explore our full range of Omron Sensors for more options.
Omron Quality for Your Industrial Automation Needs
Choosing Omron means investing in proven quality and reliability. Omron is a global leader in industrial automation, known for its high standards in design, manufacturing, and performance. The E3Z series, including the E3Z-T81 2M sensor, embodies this commitment, providing dependable operation day after day. Integrating Omron components ensures compatibility and performance within a wider Omron ecosystem.
We understand the critical nature of automation components. That’s why we have a large number of new original stock for the E3Z-T81 2M, ready for global delivery within 24 hours. We back this up with technical support and worry-free after-sales service. Don’t settle for less when it comes to your industrial sensing needs. Contact us today to secure your Omron E3Z-T81 2M sensors. You might also be interested in our selection of HMI units or check our Contact page for inquiries.
Omron E3Z-T81 2M Product Datasheet
Frequently Asked Questions
The E3Z-T81 2M package includes both the emitter unit (E3Z-T81-L 2M) and the receiver unit (E3Z-T81-D 2M), each with a 2-meter pre-wired cable. Mounting brackets and reflectors (not needed for through-beam) are typically sold separately.
Alignment is critical. Start by roughly positioning both units. Use the stability indicator LED on the receiver. Adjust the position of the emitter and receiver carefully until the indicator light is stably ON, indicating a strong, reliable beam connection. Fine-tune for the brightest or most stable indication.
While the IP67 rating provides excellent protection against dust and water ingress, prolonged exposure to direct sunlight (UV) or extreme weather conditions might affect longevity. Consider using appropriate shielding or selecting sensors specifically designed for harsh outdoor environments if needed.
Standard through-beam sensors like this model can struggle with highly transparent objects as the infrared beam might pass through them. For reliable detection of clear materials like glass or PET film, consider Omron sensors specifically designed for transparent object detection (e.g., models using retro-reflective technology with polarization filters).
We offer comprehensive technical support! If you have questions about installation, wiring, configuration, troubleshooting, or application suitability, our experienced team is ready to help. We also provide worry-free after-sales service to ensure your satisfaction.
