Thermal flow switch can be used to monitor pipeline fluid flow within size, drying to monitor or prevent pump idle. Thermal flow switches are widely used in various industries need to monitor the flow of fluid in the pipe or the protection of critical equipment in case of fault when the liquid flow shows the flow switch, such as the protection of pumps, lubricating oil circuit monitoring, cooling and heating circuit, monitoring the pipeline rupture, monitoring leaks and other occasions. Electronic flow monitors are used to monitor traffic flow did not reach specific. The monitor is based calorimeter type principle. Thermal flow switch with no moving parts, and even stream carrying solid may also be monitored. Thermal flow switch monitors solid blank flow switch, use is not complicated and very reliable. Thermal flow switch liquid temperature measurement to determine flow rate variation, when the liquid flows through the sensor ends, lowering the temperature and the flow rate is a certain proportion, when the flow rate changes by the user set point, the switch status will change to show traffic situation. Paddle flow switch, tour grace (certified), flow switch provided by the Beijing Amusement TU Technology Limited. Beijing Tour En Technology Co., Ltd. (www.bjyouen.com) (www.bjyouen.com) is the Beijing Haidian District, chemical instrumentation leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. Well leader in travel with the staff warmly welcome all inquiries negotiations to create a better future tour grace.