MVME133S-001工控模块系统备件
800T-2.2 1996年6月40055-161-01（C）版权所有1996 Rockwel International Corp.印刷于美国光电传感器1-334请访问我们的网站：.ab./catalogs。首选目录。编号以粗体打印。应用补救措施1。许多玻璃纤维光缆具有不同的玻璃纤维束直径。较大直径的光纤束包含更多的光纤，以在传感器和应用之间传输光。这些电缆通常提供更长的传感范围。较小直径的束提供了更高的分辨率和检测较小目标的能力。2.玻璃纤维光缆可用于高冲击和振动应用，但应固定光缆以防止过度弯曲。不要在玻璃电缆不断弯曲的应用中使用玻璃电缆。他们会崩溃的。塑料光纤电缆在这些应用中提供了更好的性能。3.避免急转弯。电缆中的单个玻璃纤维可能会断裂。对于PVC护套电缆，不得超过以下弯曲公差：最小电缆弯曲半径束直径[（in.）]最小弯曲半径[（in.）]0.68（0.027）12.7（0.50）1.16（0.046）12.7（0.50）1.6（0.063）15.8（0.625）2.28（0.090）15.8）0.625）3.17（0.125）19.0（0.75）3.96（0.156）25.4（1.0）4.57（0.180）31.7（1.25）4。玻璃纤维光缆不能切割、拼接或重新铺设。5.玻璃纤维光缆尖端不能弯曲。只能按照《选择指南》中的规定弯曲特殊塑料光纤电缆传感端头。当使用可弯曲端头时，弯曲距离电缆传感端的距离不得超过19（0.75英寸）。6.一些应用要求使用玻璃纤维光缆将传感器与高压隔离。必须为这些应用订购带有特殊非导电部件的定制电缆。X射线或GAA辐射会导致玻璃纤维最终变得不透明。使用特殊石英光纤构建的定制电缆必须适合在高辐射区域使用。8.如有可能，在水下应用中使用透射光束传感。螺旋缠绕不锈钢护套通常不适用于潮湿应用。这些应用应使用带PVC护套的光纤电缆。9.具有分叉电缆的玻璃纤维光学传感器可以根据到目标的距离和传感器上的灵敏度调节来提供回射或漫射感测。如果传感器和电缆用于逆向反射传感，则必须将传感器的灵敏度调整得足够低，以避免来自待传感目标的不希望的漫反射响应。10.玻璃纤维光缆具有广阔的视野，通常为82_。通过将增程透镜组件连接到光纤的传感端，可以获得更小的视野。这些透镜组件还将增加可用的感测距离。有关更多信息，请参阅附件部分。11.大多数玻璃纤维光缆具有圆形传感头，玻璃纤维呈圆形排列
-- March 2000 Supersedes Publication 800T-2.2 June 1996 40055-161-01 (C) Copyright 1996 Rockwel International Corp. Printed in USA Photoelectric Sensors 1--234 Visit our website: .ab./catalogs. Prefer availability cat. nos. are printed in bold. Application Recoendations 1. Many glass fiber optic cables are available with different glass fiber bundle diameters. Larger diameter bundles contain more fibers to carry light between the sensor and application. These cables will generally offer longer sensing ranges. Smaller diameter bundles provide greater resolution and the ability to detect smaller targets. 2. Glass fiber optic cables can be applied in high shock and vibration applications, but secure the cables to prevent excess flexing. Do not use glass cables in applications where they are constantly flexing. They will break. Plastic fiber optic cables provide better performance in these applications. 3. Avoid sharp bends. The individual glass fibers in the cable can be broken. Don’t exceed the following bend tolerances with PVC sheathed cables: Minimum Cable Bend Radius Bundle Diameter [ (in.)] Minimum Bend Radius [ (in.)] 0.68 (0.027) 12.7 (0.50) 1.16 (0.046) 12.7 (0.50) 1.6 (0.063) 15.8 (0.625) 2.28 (0.090) 15.8 (0.625) 3.17 (0.125) 19.0 (0.75) 3.96 (0.156) 25.4 (1.0) 4.57 (0.180) 31.7 (1.25) 4. Glass fiber optic cables cannot be cut, spliced or repai. 5. Glass fiber optic cables tip cannot be bent. Only special plastic fiber optic cable sensing end tips can be bent as specified in the Selection Guide. When using bendable end tips, bend should not be attempted closer than 19 (0.75 in.) to the sensing end of the cable. 6. Some applications call for glass fiber optic cables to be used to isolate the sensor from high voltage. Custom cables with special nonconductive ponents must be orde for these applications. 7. X-RAY or GAA radiation will cause glass fibers to eventually bee opaque. Custom cables constructed with special optical quartz fibers must be orde for use in areas with high radiation. 8. Use Transmitted Beam sensing in submerged applications when possible. Spiral-wound stainless steel sheathing is generally not suitable for wet applications. Fiber optic cables with PVC sheathing should be used for these applications. 9. A glass fiber optic sensor with a bifurcated cable can provide retroreflective or diffuse sensing depending upon the distance to the target and the sensitivity adjustment on the sensor. If the sensor and cable are to be used for retroreflective sensing, the sensitivity of the sensor must be adjusted low enough to avoid unwanted diffuse response from the targets to be sensed. 10. Glass fiber optic cables have a wide field of view, typically 82_. A smaller field of view can be hieved by atthing an Extended Range Lens Assembly to the sensing end of the fiber. These lens assemblies will also increase the available sensing distance. Refer to the cessories section for more information. 11. Most glass fiber optic cables have round sensing tips with the glass fibers arranged in a circular
