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『Calibrate the rotor flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. (1) The calibration coefficient of a certain model of rotor flowmeter is
(273.15+40)/(273.15+20)=1.0682
2. Is the rotor flowmeter installed horizontally or vertically?
The rotor flowmeter must be installed vertically, and more than 90% of the usage scenarios require vertical installation. Installation method analysis
1. Principle limitation: The rotor flowmeter measures the flow rate by floating the float up and down in the conical tube. The vertical direction of the material thickness can ensure that the float falls evenly under gravity. If the water gets trapped and hits the flat installation, it will cause the float to jam or stick to the wall, resulting in complete failure
2. Scale calibration: The flow scale values on the surface of the instrument are calibrated in a vertical state, and tilting more than 5 ° will result in a measurement error of more than 10%
3. Exception: Special designed axial insertion rotor flowmeters can be installed horizontally, but the product manual should clearly indicate "allowed for horizontal use" and have a horizontal calibration function. This type of product accounts for less than 5%. Maintenance tips: Use a spirit level to calibrate the verticality during installation, and clean the dirt on the inner wall of the conical tube with a cotton swab during annual maintenance. In the petrochemical industry, a major accident occurred in a refinery where the flow meter tilted 12 degrees due to pipeline vibration, resulting in a measurement error of 200 tons of crude oil per day. The reliability of vertical installation can be seen fro
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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. Therefore, by observing the position of the float, the flow rate of the fluid can be determined. Special circumstances: In certain special circumstances, such as space limitations or special requirements, it may be necessary to install flow meters horizontally. At this point, a specially designed rotor flowmeter should be selected to ensure the accuracy and stability of the measurement during horizontal installation. These specially designed flow meters may adopt different float shapes, weights, or installation methods to meet the requirements of horizontal installation. In summary, rotor flow meters are usually installed vertically. In special circumstances, if horizontal installation is required, a specially designed flow meter should be selected.