What is the principle of high-precision glass rotameters? Posted by : admin / Posted on : Mar 08， 2024

High-precision glass rotameter is an instrument commonly used to measure liquid flow. Its principle is based on the relationship between the rotational motion of the rotor and the fluid flow rate. The following is a detailed explanation of the principle of high-precision glass rotameter:

1. Basic structure:
High-precision glass rotameter usually consists of a pipe, one or more rotors, sensors and displays. One or more rotors are installed inside the pipe, and the rotors rotate with the flow of fluid. The sensor measures fluid flow by detecting the rotational speed of the rotor and displays the results on the display.

2. The relationship between rotor motion and fluid flow rate:
There are usually magnets installed inside the rotor, and as the fluid passes through the pipe, the fluid exerts a force on the rotor, causing it to start spinning. The rotation speed of the rotor is directly proportional to the flow rate of the fluid, that is, the faster the flow rate, the faster the rotor rotates.

3. Sensor detects rotor rotation:
Magnetic material is installed on the rotor, and the sensor can detect the rotation of the rotor. Hall effect sensors or magnetoresistance sensors are usually used to detect changes in the magnetic field of the rotor to determine the rotation speed of the rotor.

4. Measure flow:
By measuring the rotational speed of the rotor, combined with the known rotor diameter and pipe cross-sectional area, the flow rate of fluid through the pipe can be calculated. The flow calculation formula is usually based on the relationship between rotation speed, rotor diameter and pipe cross-sectional area, as well as the density of the fluid and other parameters.

5. Advantages of high-precision glass rotor flowmeter:
High-precision performance: Because the rotor rotation speed is proportional to the fluid flow rate, high measurement accuracy can be achieved.
High reliability: Simple structure and stable operation, so it has high reliability and durability.
Wide scope of application: It can be used to measure various liquid fluids and is suitable for various industrial environments.

6. Things to note:
Rotor design: The design of the rotor must take into account the fluid characteristics and flow rate range to ensure measurement accuracy.
Calibration: Flow meters require regular calibration to ensure measurement precision and accuracy.
Maintenance: Clean and maintain the flow meter regularly to ensure proper operation.