Meter size. That is the size of a variety of smart meter meter wholesale volume, this is a very basic question. DRO to be installed in the cabinet, so to consider the overall coordination of a variety of smart meter price, may not fit too big, too small to see the display numbers, addition, the large volume of the instrument representing the general features expandability strong, the same price may be more expensive variety of functional intelligent instrument sales, small size instruments may be less functional expandability. Currently the number of significant international standard size surface of the plate are the following: 48 * 24mm; 48 * 48mm; 48 * 96mm; 72 * 72mm; 96 * 96mm; 96 * 48mm; 160 * 80mm. The main function of measuring instruments are made of data acquisition, data analysis and data display composed of three parts. In virtual reality systems, data analysis and display complete with the PC software. Therefore, as long as provide some additional data acquisition hardware, and PC can be composed of measuring instruments. This PC-based measuring instruments known as virtual instruments. A variety of intelligent instruments in a virtual instrument, using the same hardware system, as long as the application of different software program, you can get a completely different function measuring instruments. Visible, the software system is the core of the virtual instrument "software is the instrument." A variety of intelligent instrument sales force since the instrument measured a variety of smart meters, Zhejiang variety of intelligent instrumentation to provide the force measured 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.