Sensors are translating the non-electric quantities such as temperature, pressure, level, gas properties or other physical quantities into electrical signals such as pressure and level directly to the transmitters. When the sensor output signal to the required standards, it is known as the transmitter. Transmitters are used to translate low-level electrical outputs from sensors to high-level signals suitable for transmission and processing. They are easy to install, maintain, and operate accurately in harsh working conditions. According to Frost & Sullivan's published research "Analysis of Chinese Process Transmitters Market", Chinese process transmitters market generated $424.6 million in 2011, and is expected to witness a high growth rate during the forecast period. The market can be divided into four segments by product type: pressure transmitters, flow transmitters, temperature transmitters, and level transmitters.
China's average gross domestic product (GDP) growth rate was 9.7 percent from 2008 to 2010, and in 2011, its GDP growth rate was 9.2 percent. Due to the development of Chinese economy, China has become one of the biggest transmitter manufacturers globally, and the manufacturing technology has reached the medium level. To meet the demands of its large population, the government is paying more attention to invest heavily in power plant construction, which requires multiple measurement devices, including pressure, temperature, and flow transmitters.