Working principle of rotameter

What is rotameter?



Rotameters are probably the most generally used variable area flow meters. It’s additionally often known as rotor flow meter or float move meter. Its operation is simple, with a liquid or fuel passing via a conical tube. In order for this gasoline to cross by way of the tube, it should first elevate 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 due to the mixture of the rate head of the fluid and the buoyancy of the liquid.

With gases, the buoyancy pressure is negligible and the float moves largely as a outcome of velocity stress head of the gasoline. In each instances, the upper the circulate price, the upper the float strikes up the tube. The float moves up and down the tapered tube in proportion to the flow rate and the annular area between the float and the tapered tube wall. As the float moves up through the tube due to its tapered nature, the annular opening increases. As this increases, the differential pressure across the float decreases. When the weight of the float is balanced against the upward drive exerted by the fluid or gasoline, the float stabilizes.

The float can then be compared to a calibration scale printed on the tube itself or positioned subsequent to the tube on the skin of the meter. The calibrated scale will sometimes give a volumetric move reading, similar to liters per minute (LPM).

Application of rotameter



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

Laboratory.

Testing and production lines.

Processing industry.

Oil industry.

Oxygen move measurement in medical purposes.

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

Download our rotameter specs and manuals



Check rotameter specs and operation manual



More articles on flowmeters:

Liquid move meter



Select the right water circulate meter for you



Difference between move meter and flow transmitter



Mass move price vs volumetric flow ratee
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What is rotameter?



Rotameters are the most commonly used variable area circulate meters. It’s also usually referred to as rotor flow meter or float flow meter. Its operation is simple, with a liquid or fuel passing via a conical tube. In order for this gas to pass by means of the tube, it should first increase a float that is mounted inside the tube.

What is working principle of rotameter?



When a rotameter is used with a liquid, the float rises due to the combination of the velocity 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 stress head of the gasoline. In each circumstances, the upper the move price, the upper the float moves up the tube. The float strikes up and down the tapered tube in proportion to the flow fee and the annular area between the float and the tapered tube wall. As the float moves up through the tube as a outcome of its tapered nature, the annular opening will increase. As this will increase, the differential strain across the float decreases. When the weight of the float is balanced against the upward pressure exerted by the fluid or gasoline, the float stabilizes.

digital pressure gauge can then be compared to a calibration scale printed on the tube itself or positioned subsequent to the tube on the surface of the meter. The calibrated scale will usually give a volumetric move reading, corresponding to liters per minute (LPM).

Application of rotameter



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

Laboratory.

Testing and production strains.

Processing trade.

Oil industry.

Oxygen move 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 handbook



More articles on flowmeters:

Liquid move meter



Select the right water move meter for you



Difference between move meter and flow transmitter



Mass flow price vs volumetric flow feee

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