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How to read a rotor flowmeter? Why?
The reading method for the rotor flowmeter is as follows: For the sub flowmeter reading 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),
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2. How does a rotor flowmeter read?
How to read a rotor flowmeter? The reading method is usually pointer reading, but there are also LCD readings. Pointer reading only reads instantaneous flow rate. For LCD, Sun Zhengmeng has instantaneous and cumulative flow rates. If there is bridge output, it can also be read from the display instrument. Reference: The intersection of the maximum cross-section of the rotor and the engraved line on the glass tube is the flow rate value. Read the markings on the surface clearly, but be aware that if the liquid is not water, and the temperature and pressure are not standard conditions, the reading should be corrected using a formula that is generally applicable.
3. Is the rotor flow meter installed horizontally or vertically?
The rotor flow meter is usually installed vertically. Requirement for Anmuhong installation: Conventional rotor flow meters must be installed vertically on vibration free pipelines to ensure measurement accuracy and stability. The fluid should flow through the flowmeter from bottom to top, so that the float can rise or fall correctly under the action of the fluid, indicating the flow rate. Working principle: The rotor flowmeter contains a conical tube and a float inside. The weight of the float has been calibrated to float in the fluid and move vertically with changes in flow rate. When the fluid flows through a conical tube, the float rises or falls under the force of the fluid, and there is a certain linear relationship between the position of the float and the flow rate. The
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