Reynolds Number Correction for Vibratory Mass Flow Measurement
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Solution Overview
Problem
Vibratory meters, such as Coriolis mass flowmeters, experience inaccuracies in mass flow rate measurements due to viscosity-related effects, necessitating a correction method.
Innovation Solution
A system and method using a Reynolds number to correct mass flow rate measurements by calculating a Reynolds number-based correction value through a stored relationship between Reynolds number values and correction values, utilizing sensor signals and meter electronics to determine and apply the correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a vibratory meter is used to measure mass flow rate, then the measurement can be obtained, but viscosity-related effects cause inaccuracies in the measurement
Solution Approach 1:
The patent applies parameter changes by introducing the Reynolds number as a correction parameter that accounts for viscosity effects. The system calculates the Reynolds number based on flow conditions and uses it to determine a correction factor that adjusts the measured mass flow rate, thereby compensating for viscosity-related measurement inaccuracies without changing the physical structure of the meter
Solution Approach 2:
The patent implements feedback by using the measured mass flow rate and fluid properties to calculate the Reynolds number, which then feeds back into the measurement system as a correction factor. This closed-loop approach continuously adjusts the measurement based on actual flow conditions, improving accuracy while accounting for viscosity effects
Data Source
AI summary
A meter electronics (20) for using a Reynolds number to correct a mass flow rate measurement of a fluid is provided. The meter electronics (20) comprises an interface (401) configured to communicatively couple to a sensor assembly (10) containing the fluid and receive sensor signals from the sensor assembly (10) and a processing system (402) communicatively coupled to the interface (401). The processing system (402) is configured to store a Reynolds number-correction relationship, wherein the Reynolds number-correction relationship relates Reynolds number values with Reynolds number-based correction values, calculate a Reynolds number of the fluid using a measured mass flow rate value of the fluid, and determine a Reynolds number-based correction value using the Reynolds number and the Reynolds number-correction relationship.