With the continuous development of microelectronics technology smart meter company integrates CPU, memory, timer / counter, parallel and serial interface, watchdog, preamp or A / D, D / A converters and other circuits in a VLSI chip (ie MCU) chip appeared. Microcontroller as the main body, the computer technology and measurement and control technologies together, they form the so-called "intelligent measurement and control system", which is a smart instruments. Internationally intelligent measurement instrument is a wide variety of smart electricity meters, for example, the United States HONEYWELL company's DSTJ-3000 series of intelligent transmitter smart meter technology, capable of measuring differential pressure composite state can body temperature transmitter , static pressure automatic compensation, the accuracy can reach ± ??0.1% FS; US RACA-DANA 9303's ultra-high table, using a microprocessor to eliminate thermal noise generated by current flowing through the resistor, the measurement level can be as low as -77dB; common smart meters, Henan smart meters, power measurement since the instrument is provided by the Shanghai Automation Instrumentation Co. measured. Shanghai Automation Instrumentation Co., force measurement (www.licesh.com) strong, credible, in Shanghai Zhabei District, flow meters and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the force measured since the instrument into the brilliant and you work for a better future!