The **W2TS-312-R2** is a specific model within the series of **Fiber Optic Photoelectric Sensors**, typically manufactured by companies like **Wenglor** or similar industrial automation brands. These devices are used to detect objects in tight spaces or harsh environments where traditional sensors cannot fit. --- ### 1. Key Technical Specifications The "W2TS" series generally refers to **Through-Beam** fiber optic heads. Below are the typical electronic and mechanical characteristics: | Parameter | Specification | | :--- | :--- | | **Sensing Mode** | Through-beam (Requires a transmitter and receiver) | | **Fiber Material** | Plastic (PMMA/Polyethylene) | | **Operating Temperature** | -40°C to +70°C (Standard) | | **Bending Radius** | R2 (approx. 2mm High-Flexibility) | | **Connection Type** | M3 Threaded Head | | **Fiber Length** | Usually 2 Meters (Standard) | --- ### 2. Functional Components #### A. The Optical Fiber (The "W2" Series) The fiber acts as a light guide. In the R2 variant, the core is designed for **high flexibility**. * **Core:** Transmits the light pulse from the amplifier. * **Cladding:** Reflects light internally to prevent loss. * **Jacket:** A protective plastic coating (R2 indicates a specific bending radius capability). #### B. The Sensor Head (M3 Thread) The "312" part of the model number usually denotes the physical dimensions and mounting style. * **Material:** Stainless steel or nickel-plated brass. * **Mounting:** Hex nut and washer for precise positioning in machine frames. #### C. Interface with Amplifier The W2TS-312-R2 is a **passive component**. It does not have an internal power supply. It must be plugged into a **Fiber Optic Amplifier** (e.g., Wenglor UC series or Keyence FS series). * **Input:** Receives light from the amplifier's LED. * **Output:** Returns light to the amplifier's phototransistor. --- ### 3. Electronic Operation Principle 1. **Light Emission:** The external amplifier sends a modulated light pulse (Red or Infrared) through the "Emitter" fiber. 2. **Transmission:** Light travels through the fiber, exits the M3 head, and travels across a gap to the "Receiver" head. 3. **Interruption:** When an object passes between the two heads, the light beam is broken. 4. **Signal Processing:** The amplifier detects the loss of light and triggers a digital output (PNP/NPN). --- ### 4. Application Benefits * **EMI Immunity:** Since the "part" at the sensing point is just plastic and glass, it is immune to electrical noise and magnetic fields. * **Space Efficiency:** The M3 threaded tip allows for installation in extremely cramped mechanical assemblies. * **Durability:** High flexibility (R2) makes it suitable for use on robotic arms or moving cable carriers.