How to choose the float when measuring air flow in metal tube rotameter?

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Metal tube rotameter can measure both liquid flow and gas flow, but different media have different requirements for floats.

So when choosing a metal tube rotameter to measure air flow, you need to consider the float. The following are key factors:

1. Float model: First determine what you need to measure. Air flow range, including minimum flow and maximum flow. Make sure that the measurement range of the selected float model can cover this interval, leaving a certain margin.

2. Float material: Although the float material of the metal rotor flowmeter is usually stainless steel (such as 304), it is used for the measurement of most non-corrosive gases, but for specific conditions, such as those containing corrosive components For air flow, a more corrosion-resistant material such as 316 may be required.

3. Pressure loss: Because air flow measurement may be performed in a low-pressure system, it is particularly important to choose a float flowmeter with optimized design and small pressure loss.

Based on the above factors, it is very important to choose a metal tube rotor flowmeter that can accurately measure air flow and adapt to specific working conditions.