What is the use of the variable area flowmeter?

The variable area flow meter is an industrial flow meter used to measure the flowrate of liquids and gases. The variable area meter consists of a tube and float. The float response to flowrate changes is linear, and a 10-to-1 flow range or turndown is standard.

What is the operating principle of a variable area flow meter such as a rotameter?

The rotameter is an industrial flowmeter used to measure the flowrate of liquids and gases. Its operation is based on the variable area principle: fluid flow raises a float in a tapered tube, increasing the area for passage of the fluid. The greater the flow, the higher the float is raised.

What is the purpose of a rotameter?

A rotameter (variable area meter) is a flow meter that measures volumetric flow of liquids and gases. There is no difference between a rotameter and flow meter, and these terms are used interchangeably. The technique for measuring flow is accomplished by a freely moving float finding equilibrium in a tapered tube.

How does cross sectional area affect velocity?

The rate, or velocity, of blood flow varies inversely with the total cross-sectional area of the blood vessels. As the total cross-sectional area of the vessels increases, the velocity of flow decreases. As vessel diameter decreases, the resistance increases and blood flow decreases.

Which one of the following is used is a variable area meter?

Rotameters are the most widely used type of variable-area (VA) flowmeter. In these devices, the falling and rising action of a float in a tapered tube provides a measure of flow rate .

What is the type of variable area?

Area meters are of two general types : Rotameters and. Piston type meter.

What do you mean by variable area flow meters discuss the constructional and working details of rotameter?

The Variable Area Flowmeter is an instrument for measuring the flow of liquids and gases in pipelines. It includes a vertical tube through which the fluid flows whose diameter increases from the bottom to the top and a float which can move vertically in the tube. The position of the float is a measure of the flowrate.

Which one of the following is a variable area flow meter?

Why variable area flowmeter consists of a tapered glass tube?

Working principle: The fluid flows up through the tapered tube forcing the float to a position with sufficient free area to enable the flow to pass. This free area is related to the flow rate, the weight of the float and the density and viscosity of the fluid.

What is cross-sectional area of artery?

Arterial wall cross-sectional area as defined by two circles: an outer circle with the circumference defined by the media-adventitial interface of an artery and an inner circle representing the lumen of an artery, where r is the radius of the artery and IMT is the thickness of the artery wall.