Clear tube flow meter
A clear tube flow meter is an expedient which processes the volumetric flow rate of liquid in a padlocked duct. It is a type of meter known as variable area meters, which calculate the rate of liquid flow by changing the cross-sectional area when the liquid passes through that area, producing a quantifiable consequence.
- A rotameter requires no external power or fuel, it uses only the inherent properties of the fluid, along with gravity, to measure flow rate.
- A rotameter is also a relatively simple device that can be mass-manufactured out of cheap materials, allowing for its widespread use.
- Since the area of the flow passage increases as the float moves up the tube, the scale is approximately linear.
- Clear glass is used which is highly resistant to thermal shock and chemical action.