Modeling temperature effects on a Coriolis mass flowmeter.

Area of Science:

• Mechanical Engineering
• Metrology
• Thermodynamics

Background:

• Coriolis mass flowmeters are crucial for custody transfer and proficiency testing, particularly for liquified natural gas (LNG).
• Understanding their temperature dependence is vital for accurate measurements, especially at cryogenic temperatures.
• Existing models may not fully capture the behavior of these meters across wide temperature ranges.

Purpose of the Study:

• To develop and validate a model explaining the temperature dependence of Coriolis mass flowmeters.
• To extend the applicability of Coriolis flowmeter models to cryogenic temperatures (down to 5 K).
• To propose correction coefficients for enhanced accuracy in extreme temperature environments.

Main Methods:

• Development of a theoretical model for Coriolis mass flowmeter temperature dependence.
• Experimental testing of the model within a specific temperature range (285 K to 318 K).
• Analysis of literature values for material properties to extrapolate model behavior to cryogenic temperatures.

Main Results:

• The developed model accurately predicts temperature dependence within ± 0.08 % compared to experimental data.
• The model exhibits an uncertainty of 0.16 % (95 % confidence level) within the tested temperature range.
• The study lays the groundwork for correction coefficients valid down to 5 K.

Conclusions:

• The model provides a reliable method for understanding Coriolis mass flowmeter behavior across varying temperatures.
• The research enables more accurate flow measurements in cryogenic applications.
• Further development based on this model can lead to improved custody transfer and metrology standards.