Introduction of variable area flowmeters

Operating Principle Behind Rotameter (variable area flowmeters) ：

| Rotameter measurement

1. The flow rate is measured by the changing cross-sectional area of the pipe from bottom to top, using the balance achieved between the buoyancy of the float, the pull and thrust of the liquid, and gravity. This principle allows for the accurate determination of flow rates within the system.
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.

[1]

3 advantages of variable area flow meter

How to Read Flow Rate through the Float

| Read Flow Rate through the Float

Refer to the diagram above for types of floats and the following are reading methods:

• Ensure your eye level is parallel to the reading point when measuring flow rate.
• Use the correct reading position for the flow meter float (rotor) you ordered, with the horizontal black line in the diagram indicating the correct flow rate reading point for various types of flow meter floats (rotors).
• For a summary of reading methods, see the article on key points for reading flow meter floats (rotors).

Patent Dual-Pointer Design for Easy Flow Range Definition

| LORRIC's Patent Dual-Pointer Design

Starting from user convenience, this innovative approach moves away from the traditional sticker method for defining flow rates. The dual-pointer design allows for easy adjustment of flow range or setting a fixed flow simply by flicking the pointers, enhancing visibility and clarity. This design ensures flow control within a specified range, reducing operational inconvenience and increasing accuracy.

Some Points You Need To Know About Variable Area Flow Meters