What are rotameters used for?

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.

Where rotameter is used in industry?

Generally, safety-shielded glass tube rotameters are used widely in the industry to measure both liquids and gases. They provide flow capacities to about 60 GPM, and are manufactured with end fittings of metal or plastic to meet the chemical characteristics of the fluid being metered.

What industries use flow rate?

INDUSTRIES SERVED

• Oil and Gas. Flow Meters for Oil and Gas Measurement From corrosive subsea environments, offshore production platforms, onshore oil fields, or refineries we…
• Automotive.
• Hydrogen Fueling.
• Chemical / Petrochemical.
• General Manufacturing.
• Hydraulics / Fluid Power Systems.
• Test & Measurement.
• Marine / Maritime.

What are variable area flow meters used for?

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

Why are Rotameters tapered?

Re: What is the reason for tapering the tube of rotameter? If it were the same diameter, the ball would either stay at the bottom or rise all the way to the top. The taper allows the annular area between the ball and the tube to be proportionate to the flow, in a balanced condition.

What are the advantages of rotameter?

Advantages of rotameter

• Low cost.
• Low pressure drop.
• Rangeability is better.
• It is suitable for small flow rates.
• It is easily equipped with alarms and switches or any transmitting devices.
• It also measures the flow rate of corrosive fluids.
• There is an availability of viscosity-immune floats.

What are the different types of flowmeters frequently used in industry?

Although the list below is by no means exhaustive, it addresses the most well-known types of flow meters used in industries today:

• Differential Pressure Flow Meters.
• Positive Displacement Flow Meters.
• Velocity Flow Meters.
• Mass Flow Meters.
• Open Channel Flow Meters.

What are the technologies used for flow rate measurement in industrial applications?

Flow measurement technologies provided by SmartMeasurement™ include differential pressure flow meters, magnetic flow meters, ultrasonic flow meters, positive displacement flowmeters, turbine flowmeters, variable area flowmeters, vortex flowmeters, Coriolis mass flow meters, and thermal flow meters.

What are the types of flow measuring devices used in industry?

Which of the following is variable area meter?

Rotameter works as a constant pressure drop variable area meter.

What is the principle of rotameter?

Working principle of rotameters It consists of a tapered tube; as fluid passes through that tube, it raises the float. Greater volumetric flow exerts more pressure on the float, lifting it higher.