『MFC mass flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. MFC Mass Flow Controller
MFC Mass Flow Controller MFC, also known as Mass Flow Controller, is a device that has the function of a mass flow meter and can automatically control gas flow. The following is a detailed analysis of the MFC mass flow controller:
1. Definition and Function MFC is a steady flow device that can be manually set or connected to a computer to automatically control gas flow. It can not only measure the mass flow rate of gas, but also keep the flow rate constant at the set value as needed, even if there are fluctuations in system pressure or changes in environmental temperature. Secondly, the working principle of MFC mainly includes thermal, differential pressure, volumetric, Coriolis and other types, among which thermal mass flow controller is currently the most widely used type. The core of a thermal MFC is a composite system that integrates sensing and control components. Its working principle is as follows: the sensor module includes a constant power heating element (such as a hot wire) and two temperature detection elements (such as thermistors) symmetrically distributed upstream and downstream of the gas flow channel. When gas flows through a channel, the flowing medium carries away heat through convection, causing temperature gradients in upstream and downstream sensors. After the temperature detection element converts the temperature difference signal into an electrical signal, the controller compares the signal in real time with the theoretical value corresponding to the preset flow rate. By dynamically adjusting the power of the heating element to compensate for heat loss, the temperature field balance in the sensing area is maintained. This closed-loop control mechanism c
III. Components MFC consists of flow sensors, splitter channels, flow regulating valves, and amplification controllers.
. The cross-sectional structure diagram is shown below: after entering the intake end, the gas is divided into two paths, one through the flow sensor and the other through the gas passage. The flow value measured by the sensor is compared with the set flow value to control the opening or closing of the valve, so that the measured value is consistent with the set value. Under the continuous action of the comparison circuit, when the air pressure or temperature changes within a certain range, the controller will make corresponding adjustments to maintain stable flow control.Fourth, Application Fields MFC has a wide range of applications in multiple fields due to its high precision, fast response, and wide applicability: Semiconductor industry: MFC can handle very small gas flow rates, suitable for accurate gas ratio and process control, and is an indispensable equipment in the semiconductor manufacturing process.
. Chemical industry: In chemical production, MFC can accurately control the flow rate of reaction gases, ensuring the stability and efficiency of chemical reactions. Laboratory equipment: MFC is used in laboratory equipment to accurately control the flow rate of gases, meeting the high-precision requirements for gas flow in scientific research experiments. Biopharmaceuticals: MFC is used in the field of biomedicine to control gas flow in bioreactors, ensuring the stability and
Hot Product
Related AD
