The instruments and devices commonly used in thermal power plants primarily include those for measuring temperature, pressure, liquid levels, flow, and vibration. For temperature measurement, thermistors, thermocouples, and other devices such as standard pressure gauges, pressure transmitters, and differential pressure transmitters are utilized. Liquid level monitoring is done using devices like float-type level gauges and electrode-type level sensors. Flow measurement involves tools like orifice plates, vortex flow meters, electromagnetic flow meters, and vortex flow meters. Vibration displacement probes and DCS (Distributed Control Systems) are used for monitoring turbine vibrations.

Shanghai Complee Instrument Co., Ltd. (shortened to Complee) is a high-tech enterprise based in Shanghai, recognized as a specialized and innovative company in the region. It is also a patent demonstration enterprise in Songjiang District. Complee is a member of the National Standardization Committee for Electrical Meters & Instruments and a leading manufacturer specializing in a variety of products such as encoders, current sensors, transformers, transducers, relays, and electrical measuring instruments.

Complee has provided instrumentation solutions to various projects, including Jiaxin Power Station, Shanghai Baosteel Group, and the Pudong Semiconductor Gas Project in Shanghai. The company is known for offering tailored, high-quality solutions to meet the needs of power plants, industrial manufacturers, and large-scale infrastructure projects.