Product Description: The cross section air volume measuring device is a flow meter developed according to the principle of velocity area method. The velocity area method is to divide the cross section of the measured velocity into many small units. Assuming the velocity Vi of each unit area, the total flow is equal to the sum of the flow through all small unit areas. The more the unit area is divided, the more accurate the measured flow rate is. The cross section air volume measuring device is developed according to this principle. Our company's electromagnetic flowmeter, precession vortex flowmeter, thermal gas mass flowmeter and other products are very high measurement accuracy, balance flowmeter, nozzle flowmeter are often used, our products are also very professional.