Working principle of rotameter

What is rotameter?



Rotameters are the most commonly used variable space flow meters. It’s also often referred to as rotor move meter or float circulate meter. Its operation is easy, with a liquid or gas passing via a conical tube. In order for this fuel to cross via the tube, it must first elevate a float that’s fixed contained in the tube.

What is working precept of rotameter?



When a rotameter is used with a liquid, the float rises due to the combination of the rate head of the fluid and the buoyancy of the liquid.

With gases, the buoyancy pressure is negligible and the float strikes mostly because of the velocity strain head of the gas. In both instances, the upper the flow rate, the upper the float moves up the tube. The float moves up and down the tapered tube in proportion to the flow price and the annular space between the float and the tapered tube wall. As the float strikes up by means of the tube due to its tapered nature, the annular opening increases. As this increases, the differential strain across the float decreases. When the weight of the float is balanced towards the upward pressure exerted by the fluid or gas, the float stabilizes.

The float can then be compared to a calibration scale printed on the tube itself or placed next to the tube on the surface of the meter. The calibrated scale will sometimes give a volumetric flow reading, corresponding to liters per minute (LPM).

Application of rotameter



Rotameters are commonly used to measure the move of liquids or gases, with the following utility examples:

Laboratory.

ไดอะแฟรม ซีล and manufacturing traces.

Processing industry.

Oil industry.

Oxygen move measurement in medical functions.

For metering purge flow (i.e. viscous fluids with suspended particles).

Download our rotameter specifications and manuals



Check rotameter specs and operation handbook



More articles on flowmeters:

Liquid circulate meter



Select the proper water flow meter for you



Difference between move meter and move transmitter



Mass move rate vs volumetric move feee
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What is rotameter?



Rotameters are probably the most generally used variable area move meters. It’s also often called rotor circulate meter or float move meter. Its operation is easy, with a liquid or fuel passing by way of a conical tube. In order for this gas to pass by method of the tube, it must first increase a float that is fastened inside the tube.

What is working principle of rotameter?



When a rotameter is used with a liquid, the float rises as a result of mixture of the speed head of the fluid and the buoyancy of the liquid.

With gases, the buoyancy drive is negligible and the float strikes mostly due to the velocity pressure head of the gas. In both instances, the upper the flow price, the higher the float strikes up the tube. The float moves up and down the tapered tube in proportion to the circulate rate and the annular space between the float and the tapered tube wall. As the float strikes up via the tube because of its tapered nature, the annular opening will increase. As this will increase, the differential pressure across the float decreases. When the weight of the float is balanced against the upward drive exerted by the fluid or gas, the float stabilizes.

The float can then be compared to a calibration scale printed on the tube itself or placed next to the tube on the skin of the meter. The calibrated scale will usually give a volumetric circulate studying, corresponding to liters per minute (LPM).

Application of rotameter



Rotameters are generally used to measure the circulate of liquids or gases, with the next application examples:

Laboratory.

Testing and production lines.

Processing business.

Oil trade.

Oxygen flow measurement in medical purposes.

For metering purge circulate (i.e. viscous fluids with suspended particles).

Download our rotameter specs and manuals



Check rotameter specifications and operation guide



More articles on flowmeters:

Liquid move meter



Select the proper water move meter for you



Difference between move meter and flow transmitter



Mass flow price vs volumetric flow ratee

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