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DWLZ metal tube rotameter

The invention relates to a metal tube rotameter which has the characteristics of small volume, large detection range, convenient use and the like and can be used for measuring the flow of liquid, gas and steam. The caliber is from DN15 to DN200, the accuracy is 1.5 grade, especially suitable for the flow measurement of low flow rate and small flow medium and the flow measurement of high temperature, high pressure, opaque and corrosive medium.