Orbital ball flowmeter for gas and fluid

A flowmeter for measuring flow of a fluid, of the type where the fluid flow is directed into rotation movement for measurement, the flowmeter comprising:

• a housing having an inlet, an outlet, and a measuring chamber between the inlet and outlet, the measuring chamber having a diameter larger than that of the inlet;
• an expanding part of the housing between the inlet and the measuring chamber, wherein the diameter increases from the small diameter of the inlet to the larger diameter of the measuring chamber;
• a blade section between the inlet and the measuring chamber, the blade section having spiral blades for imparting the rotational movement to the fluid when the fluid enters the measuring chamber,
• wherein the blade section is located in an expanding part of the housing, such that the fluid is imparted with the rotational movement prior to reaching the measuring chamber;
• and
• a ball positioned in the measuring chamber such that the rotational movement of the fluid moves the ball in a circular motion around the measuring chamber for measuring the flow of the fluid.