During technical comparisons, E3T-FL21-2M appears alongside Omron SMPS 24V 10A, E3Fa Dp12 2M and Omron Sensors so engineers assess signal types, ingress protection, and ambient tolerances accurately.
Omron E3T-FL21 2M Photoelectric Sensor
The Omron E3T-FL21 2M Photoelectric Sensor is an ultrathin BGS reflective with a 1 to 30 mm sensing range, NPN output, and Light-ON operation for precise detection. It operates on a 12 to 24 VDC power supply and is part of the Omron automation lineup under the Omron Photoelectric Sensors category and the Omron E3T Series. Featuring a red LED (650 nm) light source, 20 mA current consumption, 1 ms response time, and a 2 m pre-wired cable, this IP67-rated sensor ensures reliable background suppression for compact industrial installations.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-FL21 2M |
Omron E3T-FL21 2M Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | BGS- reflective |
| Sensing Distance | 1 to 30 mm (50 × 50 mm white paper) |
| Standard Sensing Object | 0.15-mm dia. non-glossy object (sensing distance 10 mm) |
| Light Source | Red LED (650 nm) |
| Power Supply Voltage | 12 to 24 VDC , ripple (p-p) 10% max. |
| Output Configuration | NPN |
| Connection Method | Pre-wired 2 M cable |
| Current Consumption | 20 mA max. |
| Control Output | Load power supply voltage: 26.4 VDC max. Load current: 50 mA max. (residual voltage: 2 V max. for load current of 10 to 50 mA, 1 V max. for load current of less than 10 mA) Open-collector output |
| Operation Mode | Light-ON |
| Response Time | Operate or reset: 1 ms max. |
| Indicators | Operation indicator (orange), Stability indicator (green) |
| Ambient Illumination | Incandescent lamp: 5,000 lx max., Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −25 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 | 10 to 2,000 Hz, 1.5-mm double amplitude or 300 m/s2 for 0.5 hours each in X, Y, and Z directions |
| Shock Resistance | 1,000m/s2 3 times each in X, Y, and Z directions |
| Protection Circuits | Power supply and control output reverse polarity protection, Output short-circuit protection, Mutual interference prevention |
| Degree Of Protection | IEC 60529 IP67 |
| Material | PBT (polybutylene terephthalate), Denatured polyarylate |
| Weight | Approx. 20 g |
The Omron E3T-FL21 2M operates within a 1 to 30 mm sensing range, using a red LED light source (650 nm) to reliably detect non-glossy objects as small as 0.15 mm in diameter at 10 mm distance. It supports NPN open-collector output in Light-ON mode and runs on a 12 to 24 VDC power supply, drawing just 20 mA current. Its rapid 1 ms response time and pre-wired 2M cable allow seamless integration into high-speed automation systems.
Engineered for industrial durability, this sensor is enclosed in a robust housing made from PBT and denatured polyarylate, with an IP67 protection rating as per IEC 60529. It offers resistance to harsh lighting conditions—up to 10,000 lx sunlight—and endures mechanical stress with vibration resistance up to 2,000 Hz and shock resistance of 1,000 m/s². Built-in safeguards include reverse polarity protection, output short-circuit protection, and mutual interference prevention, making the Omron E3T-FL21 2M Photoelectric Sensor a trusted choice for demanding industrial automation environments.
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