Omron E3Z-T81 5M Photoelectric Sensor
The Omron E3Z-T81 5M Photoelectric Sensor offers Through-beam, 15 m Sensing distance, PNP Output, Pre-wired 5 M cable, 12 to 24 VDC Power Supply Voltage. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3Z Series and includes an Emitter (E3Z-T81-L 5M) and Receiver (E3Z-T81-D 5M), it utilizing a Infrared LED (870 nm), Light-ON/Dark-ON selectable mode.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-T81 5M |
Omron E3Z-T81 5M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Sensing Distance | 15 m |
| Emitter Number | E3Z-T81-L 5M |
| Receiver Number | E3Z-T81-D 5M |
| Standard Sensing Object | Opaque: 12-mm dia. min. |
| Light Source | Infrared LED (870 nm) |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre-wired 5 M cable |
| Current Consumption | 35 mA max. (Emitter: 15 mA max., Receiver: 20 mA max.) |
| Control Output | Load power supply voltage: 26.4 VDC max., Load current: 100 mA max. Residual voltage: Load current of less than 10 mA: 1 V max. Load current of 10 to 100 mA: 2 V max. |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | Operate or reset: 1 ms max. |
| Sensitivity Adjustment | One-turn adjuster |
| Indicators | Operation indicator (orange), Stability indicator (green), Through-beam Emitter has power indicator (orange) only. |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −25 to 55°C, Some connector models: −40°C to 55°C, Storage: −40 to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. at 500 VDC |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | Destruction: 500 m/s2 3 times each in X, Y, and Z directions |
| Protection Circuits | Reversed power supply polarity protection, Output short-circuit protection, and Reversed output polarity protection |
| Degree Of Protection | IEC, IP67 |
| Material | PBT (polybutylene terephthalate), Modified polyarylate |
| Weight | Approx. 30 g |
The Omron E3Z-T81 5M Photoelectric Sensor uses a through-beam configuration with a high-efficiency Infrared LED (870 nm) as its light source. It can detect opaque targets as small as 12 mm over a 15-meter range, making it highly effective in conveyor tracking, object detection, and part presence verification in automated processes. Its compact and rugged build ensures reliable performance even in space-constrained machine environments.
Powered by a 12 to 24 VDC supply, this model features a PNP open collector output and comes with a pre-wired 5-meter cable for flexible mounting. Users can toggle between Light-ON and Dark-ON modes, and fine-tune performance using a 1-turn sensitivity adjuster. The unit also includes visual indicators: an orange LED for operation and green for stability. With a 1 ms response time, the sensor is suitable for real-time feedback applications in high-speed lines.
With an IP67-rated housing made from durable PBT and modified polyarylate resin, the E3Z-T81 5M is built to withstand industrial conditions, including exposure to vibration, shock, and varying temperatures. It includes robust safety mechanisms such as reverse polarity protection, short-circuit protection, and reversed output polarity protection, making it a dependable choice for OEMs and plant engineers.
