The **OF-08HT28CS** is a specialized high-temperature infrared (IR) optical fiber sensor head typically used in industrial automation for non-contact object detection in extreme environments. --- ## 1. Technical Specifications The "HT" in the model name signifies **High Temperature**, while the "CS" usually refers to the **Chemical/Corrosion Resistance** or a specific lens configuration. | Feature | Specification Details | | :--- | :--- | | **Sensing Method** | Through-beam or Reflective (depending on setup) | | **Fiber Material** | Glass Fiber (Multi-core) | | **Sheath Material** | Stainless Steel (SUS304/316) or Fluororesin | | **Operating Temp** | -40°C to +250°C (Typical range for HT series) | | **Bending Radius** | R25 mm (Standard) | | **Optical Axis** | Side-view or Top-view (depending on adapter) | --- ## 2. Key Electronic & Mechanical Components ### A. The Optical Fiber Bundle Unlike standard plastic fibers, the OF-08HT28CS uses **Glass Fiber cores**. * **Function:** Glass is used because plastic fibers melt at temperatures above 60°C–70°C. * **Electronic Interaction:** It guides the light modulated by the separate Amplifier Unit (e.g., FX-500 or FS-V30 series) to the target area. ### B. Stainless Steel Braiding (Armor) The external sleeve is constructed from flexible stainless steel. * **EMI Shielding:** Provides minor protection against electromagnetic interference. * **Mechanical Protection:** Prevents the internal glass fibers from snapping under tension or abrasion. ### C. Termination / Sensing Head The "08" usually refers to an **M8 threaded head**. * **Mounting:** It allows for precision positioning using nuts. * **Lens Compatibility:** It can often be fitted with expansion lenses to increase the sensing distance or narrow the beam. --- ## 3. System Architecture The sensor head does not work alone; it is a passive component in an active electronic circuit: 1. **Amplifier (Light Source):** An LED or Laser Diode generates light. 2. **Transmitting Fiber:** Light travels through the OF-08HT28CS to the target. 3. **Receiving Fiber:** Light reflects back or is received by a second head. 4. **Photodetector:** The amplifier converts the returned light into an electrical signal (PNP/NPN output). --- ## 4. Application Use Cases * **Wafer Processing:** Detection of silicon wafers inside high-heat vacuum chambers. * **Glass Manufacturing:** Monitoring glass flow or presence near furnaces. * **Oven Conveyors:** Counting items passing through industrial curing ovens.