On the basis of interdisciplinary research, the sensor is more prominent position. The development of modern science and technology into many new areas: for example, at the macro to observe thousands of light-years of the vast universe, to observe the microscopic particles as small fm world longitudinally to observe celestial bodies up to tens of thousands of years of evolution short to s instant reaction. In addition, there have been various studies extremist material on deepening awareness of technology, develop new energy, new materials, have an important role, as ultra high temperature, cryogenic, ultra, ultra high vacuum, magnetic super, super weak magnetic fields, etc. Obviously the sensor, to obtain a lot of information can not directly obtain the human senses, there is no sensor adapted to be impossible. Many barriers to basic scientific research, the first object is to obtain information on the difficulties, while some of the new mechanism and high-sensitivity detection sensor emergence quality sensors, often lead to breakthroughs in the field. Develop some sensors, often some interdisciplinary pioneer in the development. Float level sensor float by magnetic float level sensors, measurement catheter, signal unit, electronic unit, junction boxes and mounting components. The proportion of the general magnetic float of less than 0.5, you can float above the surface and measuring the movement along the catheter down. Catheter that has the measuring element, it can convert the external action under the magnetic resistance of the signal is proportional to the measured signal is converted to liquid level changes, and the electronic unit into 4 ~ 20mA or other standard signal output. The sensor module circuit, with acid, moisture, shock, corrosion, etc. classification sensor, circuit contains an internal constant current feedback circuit and protection circuit, can not exceed the maximum output current of 28mA, and therefore can reliably protect the power supply and two second instrument is not damaged. Sensor applications, Xinfeng (certified), the sensor is provided by Xinxiang City, Xinfeng Sensing Technology Co. purification. Xinxiang City Xinfeng purification Sensing Technology Co., Ltd. (www.xfcgq.com) is an industry leader in Henan Xinxiang, sensors, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Xinfeng leadership with the staff warmly welcome all inquiries negotiations to create a better future Xinfeng.