A gas flow controller is a device used to precisely control gas flow and is widely used in various industrial, laboratory and medical equipment. It keeps the gas flow steady and ensures that it meets specific flow requirements. 1. Working principle The working principle is based on the law of conservation of mass and Bernoulli's principle. As the gas passes through the flow controller, it passes through a series of precise flow calculators to measure the flow of the gas. These calculators can take measurements using different technologies such as thermal, mass flow or differential pressure. After measuring the gas flow, the flow controller adjusts the action of a valve or other control device based on the difference between the requested flow and the actual flow. This adjustment can be achieved through a feedback control loop to ensure that the error between the actual flow and the desired flow is minimized. 2. Key technologies Key technologies include the following aspects: 1. Measurement accuracy: measurement accuracy is one of its important performance indicators. To ensure accuracy, manufacturers usually use high-precision measurement sensors and calibration methods to calibrate the equipment. 2. Reliability: It must have a high degree of reliability to ensure its normal operation in various applications. Manufacturers usually use high-quality materials and manufacturing processes, and conduct strict quality control to ensure product reliability. 3. Response speed: The response speed must be fast enough to adapt to the rapidity of flow changes. This can be achieved by using highly responsive control valves or other control devices. 4. Stability: It must have a high degree of stability to ensure that its measurement accuracy and control accuracy remain unchanged during long-term operation. This can be achieved through the use of high quality sensors, control valves and other controls. In a word, the gas flow controller is a highly precise control device with wide application and great significance. When selecting a gas flow controller, it is necessary to consider various performance indicators and the requirements of the desired application to ensure that a high-quality product that meets the requirements is selected.
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