U-shaped fork sensors use through-beam photoelectric technology to detect objects passing through the slot. The rugged one-piece housing keeps the emitter and receiver in alignment and a convenient, single-cable connection is provided. Visible red-light, infrared, laser, clear object, liquid and hash duty models are available, with sensing distances up to 220mm.
Fork sensors (slot sensors) are U shaped through-beam object detecting sensors that have the transmitter and receiver built into the opposing "fork" arms of the sensor housing. Fork sensors (slot sensors or "U" sensors) offer advantages over standard through-beam sensors.
* The Laser Classification Systems for the standards IEC (EN) 60825-1 defines the following safety classes: