Oval gear flow meters measure fluid through the rotation of an oval gear.
The oval gear flowmeter is a commonly used flow measurement device. Its working principle is to measure fluid flow through the rotation of a pair of oval gears. When the measured value of the flow meter is larger than the actual value, may be caused by the following factors:
Gear wear: As time goes by, the gear may become damaged due to Friction and wear cause dimensional changes, which can affect the rotation speed of the gear and the accuracy of the flow meter. If the gear is severely worn, the measurement value may be too high.
Changes in fluid properties: The design of the flow meter is based on specific fluid properties, such as viscosity, density, etc. If the actual properties of the fluid differ from those assumed when the flow meter was designed, measurement errors may result. For example,if the fluid viscosity increases,it may cause the gear to rotate faster, resulting in a larger metering value.
Installation issues: The installation location, direction and connection method of the flow meter to the pipeline may affect its measurement accuracy. If installed improperly,it may cause the fluid flow to be unstable,and thus cause the gear to rotate at an abnormal speed,and thus affect the accuracy of the measurement value.
Temperature effect: The temperature change of the fluid may affect its viscosity, thereby affecting the rotation speed of the gear and the measurement value of the flow meter. The increase in temperature may reduce the viscosity of the fluid, leading to a larger measurement value.
In order to solve this problem, you can take the following measures:
Check the gear wear regularly and replace it if necessary.
Ensure that the properties of the fluid (such as viscosity, density, etc.)match the design parameters of the flow meter.
Ensure that the flow meter is installed correctly, including the direction, location and connection to the pipe.
Monitor the temperature of the fluid and, if necessary, take steps to keep the fluid temperature stable.
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