rotameter การใช้

That authority named the machine a " Rotameter ".
A rotameter consists of a function of flow speed squared only, see drag equation.
Gas mixing systems may be mechanical, using conventional rotameter banks, or electronic, using proportional solenoids or pulsed injectors, and control may be manual or automatic.
Whereas in many other countries such as Germany, Switzerland, Austria, Spain, Italy the brand name Rotameter is registered by Rota Yokogawa GmbH & Co . KG in Germany which is now owned by Yokogawa Electric Corp.
The company was built on the strength of an innovative side-plate, dowel-pin principle of rotameter construction, which is, today, the basis of one of the company's more important product lines.