How to use glass rotor flowmeter | High score verification of glass rotor flowmeter usage method

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1. Calibration methods for glass rotor flow meters There are three main calibration methods for glass rotor flow meters, namely volumetric method, weighing method, and standard meter method. The volumetric method is a sales method that calibrates by measuring the volume of the fluid. When operating, first install the calibrated flow meter to ensure a tight connection. Start the fluid source and adjust it to the desired flow rate, collect the fluid in a standard container for a certain period of time, and record the time and volume. Repeat multiple measurements and take the average. Compare the actual volume with the displayed value on the flow meter to calculate the error. Suitable for situations with small flow rates and low accuracy requirements
2. Weighing method This method is calibrated by weighing the fluid mass. After installing the flow meter, introduce the fluid into a container of known mass, weigh the total mass using high-precision equipment, and subtract the container mass to obtain the fluid mass. Convert the density to volume and compare it with the displayed value on the flow meter. Suitable for fluids with stable density, the calibration accuracy is relatively high
3. The standard meter method uses a high-precision standard flow meter for comparison. Connect the standard table and the calibrated table in series to ensure stable fluid flow. Adjust to different flow points, record the displayed values of both, and calculate the relative error of the calibrated meter. Widely used in various flow measurement scenarios, with high calibration efficiency.

2. How should I read a rotor flowmeter? Why?

The reading method for the rotor flowmeter is as follows: For the sub flowmeter r

eading method, stand in front of the flowmeter, with your eyes parallel to the float, and move your line of sight horizontally to the left until you see the outline of the float touching the positioning line. The corresponding reading value is at the intersection of the positioning line and the horizontal scale in the middle of the float.. A rotor flowmeter measures fluid flow based on the principle of throttling, but it changes the flow area of the fluid to maintain a constant differential pressure between the upper and lower parts of the rotor. Therefore, it is also known as a variable flow area constant differential pressure flowmeter or a float flowmeter. In a vertical conical tube that expands from bottom to top, the gravity of the circular cross-section float is supported by liquid dynamics, and the float can freely rise and fall inside the conical tube. Under the action of flow velocity and buoyancy, it moves up and down, and after balancing with the weight of the float, it is transmitted through magnetic coupling to indicate the flow rate on the dial. Generally divided into glass and metal flutter rotor flow meters. Metal rotor flowmeter is the most commonly used in industry. For small diameter corrosive media, glass material is usually used. Due to the inherent fragility of glass material, rotor flowmeters made of precious metals such as all titanium are also used for key control points. Rotary flowmeter is a variable area flow meter based on float position measurement. Adopting an all metal structure and modular concept design, it has low pressure loss, large range ratio (10:1), easy installation and maintenance, and can be widely used for flow measurement and process control in complex, harsh environments

How to use glass rotor flowmeter | High score verification of glass rotor flowmeter usage method

2. How should I read a rotor flowmeter? Why?

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