Sierra - Model RedyCompact Perfect VA - Compact Mass Flow Meters & Regulators - Brochure

Rotameters, also known as Variable Area (VA) meters are used across nearly every industry where economical gas flow metering and flow regulation is required. Rotameters are what is known as a volumetric flow meter only capturing the gas flow volume, not gas mass flow rate. All volumetric flow meters and regulators are sensitive to gas pressure and temperature changes—a pressure change of just 1 Bar generates flow rate error of up to 50%.