PMMA (POLYMETHYL METHACRYLATE) FIBER OPTIC PROBE AS A NONCONTACT LIQUID LEVEL SENSOR
PMMA (POLYMETHYL METHACRYLATE) FIBER OPTIC PROBE AS A NONCONTACT LIQUID LEVEL SENSOR
复制标题
DOI：
10.1002/mop.25415
复制
发表时间：
2010-09-01
影响因子：
1.5
通讯作者：
Chandrasekaran, N.
中科院分区：
文献类型：
--
作者：
Binu, S.;Kochunarayanan, K.;Chandrasekaran, N.
本文介绍了一种非接触式光纤液位传感器的工作原理、设计、实验和性能。该传感器是基于反射现象的概念。该装置由光纤发射器、光纤探头、浮动反射镜、光电二极管探测器和数字放大器组成。光纤探头由两个60厘米长的PMMA（聚甲基丙烯酸甲酯）纤维的直径为1毫米，数值孔径0.5。纤芯折射率为1.492，包层折射率为1.402。光纤液位传感器具有设计简单、测量精度高等优点，是一种很有前途的液位测量方法。长期稳定性、线性度、灵敏度高。动态范围、非接触传感和低制造成本使其适合于分析和工艺化学、生物化学、生物分析中的精确液位控制应用。和液位的在线测量或检测。(C)2010 Wiley Periodicals，Inc. Microwave Opt Technol Lett 52：2114-2118，2010;在线发表于Wiley InterScience（www.interscience.wiley.com）。DOI 10.1002/mop.25415
This article reports the principle of operation, design aspects, experimentation, and performance of a noncontact fiber optic liquid level sensor. The sensor is based on the phenomenon of reflective concept. The device consists of fiber optic transmitter, fiber optic probe, floating reflector, photodiode detector, and digital multimeter. The fiber optic probe consists of two 60-cm-long PMMA (polymethyl methacrylate) fibers of diameter 1 mm, numerical aperture 0.5. core refractive index 1.492, and cladding refractive index 1.402. The fiber optic sensor is a promising alternative to other well-established methods for the measurement of liquid level due to its simplicity of design, high precision. long-term stability, linearity, high degree of sensitivity. dynamic range, noncontact sensing, and low cost of the fabrication make it suitable for applications in precise level control in analytical and process chemistry, biochemistry, bioanalytics. and on-line measurement or inspection of liquid level. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 2114-2118, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25415