● The Operation Principle
1. The operating principle behind the variable area flowmeters are as below：
- The variation of cross-sectional area by fluid flow.
- A balance struck between buoyancy of float, pulling and thrust of liquid, and gravity.
2. The variable area flow meters should be installed vertically.
3. Because of buoyancy, the force of the liquid and the float material should be considered.
4. The machining quality and float design will affect balance position.
5. There is an accuracy difference between the variable area flow meter with and without the guide rod. The model with a guide rod is more accurate because the guide rod makes the float always stay in the axis of the flow meter. In contrast, the float without the guide rod will shift off-axis which could impact flow rate accuracy. Therefore, the accuracy in-part is dependent on the guide rod.
6. Low price, no brand flow meters or product knock-offs have crooked guide rod problems because of bad design and machining. It results in inaccurate flow rates.
7. The body of LORRIC variable area flow meters are made by injection molding with polymer which features high accuracy and low tolerance. In stark contrast to glass material.
8. Each of LORRIC’s variable area flow meters is made through delicate machining with careful adjustments to detail. Our variable area flow meter is also customizable for certain specs depending on clients needs.
9. If there is no obvious damage to the flow meter, any abnormality, such as drastic shifting of the float or unstable flow rates could be caused by piping issues.
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● 3 advantages of variable area flow meter
1. It is easier to read the flow rate by eye visualization.
2. You can observe the status of the fluid through the transparent tube.
3. It is an easy and quick way to receive flow rate data.
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● How to Receive Flow Rate Data by Reading the Float
Please refer to the article, Essential points of reading flowrate using a flowmeter to understand how to read a float for flow rate data.
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● Patented Dual-indicator Helps to Easily Define Flow Rate Range
As a result of customers feedback, we improved the way to read the flow rate through a patented dual-indicator system. In contrast, to the more common “sticker” system which could easily peel off over time. Simply adjusting the indicators could help users clearly observe and define the flow range appropriate in their case. This small adjustment does not affect the convenience and accuracy of the flowmeter.
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● Some Points You Need To Know About Variable Area Flow Meters
- Each batch of floats could potentially weigh differently. We calibrate every batch of flowmeters to reach as high accuracy as possible.
- The float and flow meter body should always be replaced at the same time to maintain accuracy.
- Every type of fluid has its own characteristics LORRIC is able to customize every flow meter according to the components of the fluid the client is using. For details, please refer to the page Flowmeter Scale Customization.
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