Development Of Corrosion Potential Monitoring Instrument In Boiler Cleaning Process

With the rapid development of computer technology, intelligent and automated instruments with micro-computer as the core have become the trend of instruments. Compared with previous instruments, it have high precision, strong function, wild measuring range, strong communication, improve self-diagnostic functions. This paper describes the development process of corrosion monitoring instrumentation, and made its future prospects. The corrosion monitoring instrumentation developed in this article is a corrosion monitoring instrumentation that used in power plant boiler pickling process use constant potential control, expanded the scope of application of corrosion monitoring instrumentation.Power plant is a site with many interferences and a complex environment. In the measurement process will meet all kinds of interference. Need in the hardware design and software programming in the attention to this. Boiler acid cleaning process requires to measurement two parameters of the corrosion potential and corrosion rates. Corrosion monitor uses the methods of constant potential measurements are designed to use MSP430F147 as the core. Instrumentation hardware design is done by the PROTEL 99, PROTEL 99 has a powerful circuit design and signal simulation capacity. Hardware modules is composition by the electrochemical module and the microcontroller module, the module including the MSP430F147 MCU Microcontroller, AD modules, communication interfaces, and some peripheral circuits; electrochemical module is constant potential circuit. Software part use the Visual C + + to write. Visual C + + is a powerful visual software development tools, can develop a good interactive features, compatibility and scalability of applications. Finally, the actual experiments done in the power plant get good result.At last, the future development of intelligent instruments prospect, and that after further study.