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『Selection of Air Flow Meter』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. What are the types of air flow meters?
1. Vane type air flow meter: Vane type air flow meter has a simple structure and high reliability; But it has a large volume, high intake resistance, and slow response.
2、 Karman vortex air flow meter: The so-called Karman vortex refers to two columns of vortices that alternate in rotation direction downstream of a cylindrical or triangular object placed in a fluid.
3、 Optical Karman vortex air flow meter: During the generation of Karman vortex, the air pressure on both sides of the vortex generator will change, and it will act on the metal foil through the guide hole, causing it to vibrate. When the light from the light-emitting diode shines on the vibrating metal foil, the reflected light on the metal foil received by the photosensitive transistor is modulated by the vortex, and its output is demodulated to obtain a frequency signal representing the air flow rate.
4、 Ultrasonic Karman vortex air flow meter: Ultrasonic transmission probes and reception probes are installed on opposite sides of the downstream pipeline of the Karman vortex generator. Due to the influence of Karman vortex on air density, the time for ultrasonic waves to travel from the transmitting probe to the receiving probe will be delayed compared to the absence of vortex, resulting in a phase difference. By processing the phase signal of Lao Song, a vortex pulse signal can be obtained.
2. Which is a good thermal gas mass flowmeter?
3. What are the types of air flow meters?
There are mainly the following types of air flow meters: blade type air flow meter: Features: simple structure, high reliability.. Disadvantages: Large size, high intake res
4. What are the commonly used air flow meters?
1、 The blade type air flow meter has a simple structure and high reliability; However, the intake resistance is high, the response is slow, and the volume is large. The Karman vortex air flow meter uses airflow to bypass a conical object, generating two columns of vortices downstream. The vortex frequency is a function of the intake flow rate, and an instrument that determines the air flow rate by detecting the vortex frequency through optical or ultrasonic methods.
3、 During the process of generating Karman vortices in an optical Karman vortex air fl