Omron E3T-CT22S 2M Ultracompact Photoelectric Sensor
Omron E3T-CT22S 2M is an ultracompact cylindrical through-beam photoelectric sensor designed for sensing across a distance of 500 mm. A red LED creates the optical path between the transmitting and receiving sides, while the NPN output provides the switching signal for compatible industrial control circuits. Dark-ON operation defines the output logic, and operate or reset time is specified at 0.5 ms max. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Its small cylindrical format supports use where installation space is restricted. Within the E3T Series, the E3T-CT22S 2M provides the 500 mm NPN option. Related miniature through-beam sensors can be explored across Omron Sensor Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-CT22S 2M |
Omron E3T-CT22S 2M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Shape | Cylinder type |
| Sensing Distance | 500mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | NPN |
| Connection Method | Pre-wired cable length 2m |
| Current Consumption | 30 mA max. (Emitter 15 mA max., Receiver 15 mA max.) |
| Light Source (Wavelength) | Red LED |
| Operation Mode | Dark-ON |
| Response Time | 0.5 ms max. |
| Degree Of Protection | IP65 |
| Material | SUS303 |
| Material Lens | Polysulphone |
| Weight | . 60 g |
The Omron E3T-CT22S 2M Photoelectric Sensor uses through-beam sensing across a maximum distance of 500 mm in a compact cylindrical side-view format. The through-beam set consists of the E3T-CT22S-L emitter and E3T-CT22S-D receiver. A red LED provides the optical beam between both sensing sides, while the NPN open-collector output transfers the switching state from the receiver to compatible control circuitry. The sensor operates from 12 to 24 VDC, with current consumption specified at 15 mA max. for the emitter and 15 mA max. for the receiver. Dark-ON operation is specified, and operate or reset time is 0.5 ms max. A 2 m pre-wired cable provides the electrical connection.
For an Omron NPN through beam photoelectric sensor requiring 500 mm sensing in a small cylindrical format, the relevant model is the E3T-CT22S. The control output supports up to 30 VDC and 80 mA, with residual voltage specified at 1 V max. The enclosure carries an IP65 rating, while SUS303 and polysulphone are listed among the materials. Its specification also matches searches for an Omron 500 mm through beam sensor and Omron side view NPN sensor. The fast 0.5 ms response supports object-presence switching where short cycle times are important. For the corresponding 500 mm model using PNP output with the same Dark-ON operating logic, see E3T-CT24S 2M.
