Rotameters are known as the simplest type of flowmeters, work based on the variable area in different heights; so it is known as variable area flowmeters.

It is the best indicator for flow, able to measure the flow of liquids and gases conveying through a pipe. It is the cheapest flowmeter and no external force has an effect on its operation and measured value; moreover could be matched with an external control valve known as a purge flowmeter. Same as other devices it has disadvantages like low accuracy, vertical installation, and other technical points that should be considered in offered device specification. Metron can provide you with the best reasonable solution for flow indication. This device was designed and fabricated based on constant density as a constant part of a fluid.