Quantitative flow measurements of material science, quality and quantity of the exchange law is always contact and development, basic rules.Therefore its measurement object is not limited to traditional channels for fluid flow all need to know where all Liuliang surveying. Industrial production process flow measurement and instrumentation is a major area of flow and temperature, pressure and collectively referred to as the process of level control with the four parameters, one of these parameters on the production process through surveillance and control. But the fluid flows are measured and adjusted to ensure safe operation of the production process, improve product quality, reduce material consumption, enhance economic efficiency, scientific management basis. Instrumentation in the process, the flow meter's output accounted for about 1 / 5 to 1 / 4. This design uses a PIC16F876 chip key, it also should be aware of the many applications of knowledge. Optical fiber is used to replace the tube diode, to improve the precision of. The article not only explained the basics of optical fiber transmission, also explains the concept and practice of specific and practical results, I hope the development of industrial automation and faster.
Keywords: PIC microcontroller Optical fiber flow meter
