MVME133S-001工控模塊系統備件
800T-2.2 1996年6月40055-161-01（C）版權所有1996 Rockwel International Corp.印刷于美國光電傳感器1-334請訪(fǎng)問(wèn)我們的網(wǎng)站：.ab./catalogs。首選目錄。編號以粗體打印。應用補救措施1。許多玻璃纖維光纜具有不同的玻璃纖維束直徑。較大直徑的光纖束包含更多的光纖，以在傳感器和應用之間傳輸光。這些電纜通常提供更長(cháng)的傳感范圍。較小直徑的束提供了更高的分辨率和檢測較小目標的能力。2.玻璃纖維光纜可用于高沖擊和振動(dòng)應用，但應固定光纜以防止過(guò)度彎曲。不要在玻璃電纜不斷彎曲的應用中使用玻璃電纜。他們會(huì )崩潰的。塑料光纖電纜在這些應用中提供了更好的性能。3.避免急轉彎。電纜中的單個(gè)玻璃纖維可能會(huì )斷裂。對于PVC護套電纜，不得超過(guò)以下彎曲公差：最小電纜彎曲半徑束直徑[（in.）]最小彎曲半徑[（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。玻璃纖維光纜不能切割、拼接或重新鋪設。5.玻璃纖維光纜尖端不能彎曲。只能按照《選擇指南》中的規定彎曲特殊塑料光纖電纜傳感端頭。當使用可彎曲端頭時(shí)，彎曲距離電纜傳感端的距離不得超過(guò)19（0.75英寸）。6.一些應用要求使用玻璃纖維光纜將傳感器與高壓隔離。必須為這些應用訂購帶有特殊非導電部件的定制電纜。X射線(xiàn)或GAA輻射會(huì )導致玻璃纖維最終變得不透明。使用特殊石英光纖構建的定制電纜必須適合在高輻射區域使用。8.如有可能，在水下應用中使用透射光束傳感。螺旋纏繞不銹鋼護套通常不適用于潮濕應用。這些應用應使用帶PVC護套的光纖電纜。9.具有分叉電纜的玻璃纖維光學(xué)傳感器可以根據到目標的距離和傳感器上的靈敏度調節來(lái)提供回射或漫射感測。如果傳感器和電纜用于逆向反射傳感，則必須將傳感器的靈敏度調整得足夠低，以避免來(lái)自待傳感目標的不希望的漫反射響應。10.玻璃纖維光纜具有廣闊的視野，通常為82_。通過(guò)將增程透鏡組件連接到光纖的傳感端，可以獲得更小的視野。這些透鏡組件還將增加可用的感測距離。有關(guān)更多信息，請參閱附件部分。11.大多數玻璃纖維光纜具有圓形傳感頭，玻璃纖維呈圓形排列
-- 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
