Current position >About Us
Sierra USA, located in the beautiful environment of Monterey, California, USA, is a globally renowned enterprise founded by Dr. Olin in January 1971. The companys main business covers the research and development, production, and customer service of Industrial Thermal, Capillary MFM/MFC, and Vortex Mass Flow Meter. Sierra, with its profound technological heritage, gathers world-class professionals, and shapes a leading global brand image through advanced equipment, rigorous management, and excellent services. The company is headquartered in the United States and has branches in the Americas, Europe, and Asia. Its products are sold worldwide, with cumulative sales exceeding 500000 units. Sierras main product line includes thermal mass flow meters and controllers, vortex street mass flow meters, and ultrasonic flow meters. Multiple innovative technologies are unique in the industry, such as automated benchmark flow calibration systems and vortex street mass flow meters, which are the worlds first. Sierras products have won multiple national awards in the United States, especially in the field of flow measurement. Its inventions and innovations, such as thermal mass flow meters with clean sensors and low-cost micro tube thermal mass flow meters, are groundbreaking achievements in the global industry. These products are widely used in internationally renowned enterprises such as US Steel Group, Dow Chemical Company, and POSCO in South Korea, and are also included in NASAs list of application equipment. In China, Sierras products have performed well in the application of large industrial enterprises such as petrochemicals, steel, and electricity, and have won wide recognition for their accuracy and stability. During the period from the 1980s to the early 1990s, the term "Sierra" was only synonymous with adventure games for computer game enthusiasts, and almost all of Sierras famous games could be covered with just one word "Quest". The English names of the "Kings Secret Service" series, "Legend of Heroes" series, "Legend of the Universe" series, and "Police Story" series all contain the word "Quest". 2. What is the unit of cmf
Coriolis Mass Flow Meter (CMF) is a novel instrument that directly and precisely measures the mass flow rate of fluids. The main structure adopts two parallel U-shaped tubes, and the bent parts of the two tubes vibrate slightly towards each other. The straight tubes on both sides will vibrate accordingly, that is, they will approach or open at the same time, that is, the vibration of the two tubes is synchronous and symmetrical.
. If fluid is introduced into the pipe while synchronously vibrating, causing it to flow forward along the pipe, the pipe will force the fluid to vibrate up and down together with it. In order to resist this forced vibration, the fluid will give the tube a reaction force perpendicular to its flow direction, which is called the Coriolis effect force. Under this force, the vibration of the tube is not synchronized, and there will be a difference in the timing of vibration between the inlet and outlet sections of the tube (the difference is due to the opposite flow direction of the fluid in the inlet and outlet sections), which is called the phase time difference. This difference is directly proportional to the mass flow rate of the fluid flowing through the pipe. If the magnitude of this time difference can be detected through the circuit, then the size of the mass flow rate