Rotameters

A rotameter is a flow measurement device used for measuring the flow rate of a fluid (liquid or gas) passing through an enlarged vertical pipe (typically a cone-shaped tube). It operates on the variable area principle, where the position of a float within the tube directly indicates the flow rate.
• Simple, robust, and cost-effective.
• Do not require electrical power (in their mechanical version).
• Ideal for low flow rates and fixed installations