Volumetric Flow Meter, as a mechanical flow meter, is also called Positive displacement flowmeter. It can measure the volume flow of high viscosity and corrosive fluids.
Volumetric Flow Meter is a mechanical instrument used to measure the volume flow of fluids. A volumetric flow meter is an instrument which can measure either directly or indirectly the volume of a substance which is passing through a specific location in a set period of time. The main advantage of these types of flow meters is that they can handle high viscosity and corrosiveness fluid.
Sino-Inst offers a variety of Oval Gear Flow Meters for flow measurement. If you have any questions, please contact our sales engineers.
Featured Volumetric Flow Meters
Volumetric Flow Meter Types
As a mechanical flowmeter, the positive displacement flowmeter is characterized by no requirements for the front and rear straight pipes and high measurement accuracy. It is widely used in measuring viscous media such as oils.
With so many positive displacement flow meters, each has its own advantages and is used in different media measurement.
Common positive displacement flow meters are oval gear flow meters, double rotor flow meters, waist wheel flow meters and scraper flow meters.
However, volumetric flow meters are more expensive than ordinary electronic watches, especially large-caliber meters.
Volumetric flow meter working principle
The positive displacement flow meter is a flow meter that uses mechanical measuring elements to continuously divide the fluid into a single known volume, and repeatedly fill and discharge the volume of fluid to accumulate the total amount of fluid.
Volumetric flow measurement uses a fixed small volume to repeatedly measure the volume of fluid passing through the flowmeter.
Therefore, there must be a standard volume of space inside the positive displacement flowmeter, which is usually called the “metering space” or “metering chamber” of the positive displacement flowmeter.
This space is formed by the inner wall of the instrument case and the rotating parts of the flowmeter.
The working principle of a positive displacement flow meter is: fluid passing through the flow meter will produce a certain pressure difference between the inlet and outlet of the flow meter.
The rotating part of the flowmeter (referred to as the rotor) rotates under the action of this pressure difference, and discharges the fluid from the inlet to the outlet.
In this process, the fluid fills the “metering space” of the flowmeter again and again, and then is continuously sent to the outlet.
Under the conditions of a given flow meter, the volume of the metering space is determined. As long as the number of rotations of the rotor is measured, the cumulative value of the volume of fluid passing through the flow meter can be obtained. Flow rate of viscous fluids such as oils, condensate, resin and liquid food.
For the flow of high-viscosity media, other flowmeters are difficult to measure, but positive displacement flowmeters can accurately measure with an accuracy of ±0.2%.
Mass Flow Rate vs Volumetric Flow Rate-How to convert ?
- If the mass flow of the flow is known and needs to be converted into volume flow, the following formula can be used: qv=qm/ρ. In the formula, qv is volume flow, m3/s. qm is mass flow, kg/s. ρ is fluid Density, kg/m3.
- If the volume flow rate of the fluid is known, it needs to be converted into a mass flow rate, which can be done with the formula: qm=qv×ρ.
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Sino-Inst, Manufacuturer for Volumetric Flow Meters. For example: crude oil flowmeter, diesel flowmeter, gasoline flowmeter.
Sino-Inst’s Volumetric Flow Meters, made in China, Having good Quality, With better price. Our flow measurement instruments are widely used in China, India, Pakistan, US, and other countries.
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Volumetric Flow Meters for Sale-Sino-Inst
Volumetric Flow Meter, as a mechanical flow meter, is also called Positive displacement flowmeter. It can measure the volume flow of high viscosity and
Product SKU: Volumetric Flow Meters
Product Brand: Sino-Inst
Product Currency: USD
Product Price: 500
Price Valid Until: 2059-09-30
Product In-Stock: InStock