Laminar Mass Flow meters

Laminar mass flow meters calculate mass flow by measuring the pressure drop across laminar flow elements.
Operating Principle
These flow meters are equipped with a laminar restriction element through which the fluid flows in a laminar regime. When the gas passes through this element:
• a pressure drop occurs between the inlet and outlet of the laminar element,
• this pressure drop is proportional to the volumetric flow rate in the laminar regime,
• knowing the temperature and pressure of the gas, the mass flow rate can be calculated accurately.
Advantages
• Very good accuracy even at low flow rates,
• Fast and linear response in the laminar regime,
• Low sensitivity to gas composition (if properly calibrated).