Photoelectric Sensor | M12 Through-Beam Type | 20m Detection Range

This OMCH photoelectric sensor uses a focused light beam to find objects without touching them in automated systems. You can get it in through-beam or diffuse reflection models, depending on your needs. The OMCH adjustable photoelectric switch lets you change how sensitive it is, so it works with different materials, colors, and distances. Features and Benefits - Through-beam and diffuse models - Through-beam sensors notice when something breaks their light path. Diffuse sensors see light that bounces off the object itself. - Adjustable sensing distance - A small dial on the OMCH industrial sensor lets you set how far it looks. This helps stop it from triggering on things in the background. - NPN or PNP output configurations - The sensor comes with different output types. These will match what your PLC or control system expects. - IP67 rated housing - Its sealed body keeps dust and water out of the inside parts. This means it works in tough factory settings. Applications - Counting items on a conveyor belt - Finding parts inside a packaging machine - Checking positions in automated storage and retrieval systems How They Work A photoelectric sensor is an optical sensor that uses a beam of light to detect the presence or absence of an object. These sensors operate by emitting a light beam and then detecting if that beam is interrupted or reflected back to a receiver. This particular sensor is a through-beam type, meaning the emitter and receiver are in separate units. When an object passes between them, the light beam is broken, triggering a signal. This mechanism allows for reliable detection across its 20m range. 3 Main Types of Photoelectric Sensors There are three primary types of photoelectric sensors. Through-beam sensors, like this M12 model, consist of a separate emitter and receiver. The object breaks the light beam, indicating its presence. Diffuse sensors, another type, emit light that reflects off the object back to the sensor. Retro-reflective sensors emit light to a reflector, and an object is detected when it interrupts the beam between the sensor and the reflector. This product is available as both a Laser Through Beam and Diffuse sensor type. Common Applications Photoelectric sensors are versatile tools used in various industrial and commercial settings. Their ability to detect objects without physical contact makes them ideal for tasks such as counting items on a conveyor belt, monitoring entry and exit points, or ensuring correct positioning of components in machinery. With a 20m detection range, this particular sensor is suitable for applications requiring detection over longer distances, such as in warehouses or large assembly lines. They are often chosen for their reliability and precision. The Core Components At the heart of a photoelectric sensor are several key components. The emitter generates the light beam, which can be visible or infrared. The receiver then detects this light. For through-beam types, these are housed in separate units. The sensor also includes circuitry to process the detected light and convert it into an electrical signal. This signal indicates the presence or absence of an object. The M12 form factor suggests a compact and robust design for integration into various systems. The 3 Main Operating Modes Photoelectric sensors typically operate in three main modes. Through-beam mode, exemplified by this 20m detection range product, involves a separate emitter and receiver, with detection occurring when the beam is broken. Diffuse mode detects objects by sensing the light reflected directly off their surface. Retro-reflective mode uses a reflector to bounce the emitted light back to the sensor, with detection occurring when an object interrupts this reflected beam. This product offers both Laser Through Beam and Diffuse sensor types, providing flexibility for different detection requirements.