14. The gas discharge lamps, fluorescent rectifier, starter. They will be on the grid and the surrounding space electromagnetic disturbance generated. 15. The power tool. Buildings used power tools, series motor commutator may produce electromagnetic interference. 16. lightning strikes. Caused by lightning surge current up to 100 kA high-precision electromagnetic flowmeter, the rise time of only a few microseconds. This may impact the current induced in the electric system of the building in a high surge voltage, if the buildings were directly hit by lightning, harassment produced will be greater. Integral electromagnetic flowmeter is a precision, high reliability and long life flow meter, so the design of product structure, selection, formulation technology, manufacturing, assembly and factory testing process every step we are very careful attention, we also to design a set of currently the most advanced, dedicated to the electromagnetic flowmeter production equipment and real traffic flow calibration device, which can be in the software and hardware products and ensure the long-term quality. Split electromagnetic flowmeter _ force measuring instrument since (certified) _ electromagnetic flowmeters measure the force provided by the Shanghai Automation Instrumentation Co., Ltd .. Shanghai Automation Instrumentation Co., force measurement (www.licesh.com) is the Shanghai Zhabei District, flow meters leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Since the force measuring device leadership with the staff warmly welcome all inquiries negotiations to create the force measuring instrument since a better future.