Coriolis Flow Transducer Temperature Compensation
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Solution Overview
Problem
Conventional vibronic measuring systems face challenges in accurately determining the transducer apparatus temperature, which is crucial for precise measurement of fluid parameters like density and viscosity, due to limited temperature measurement points and dynamic heat equilibration processes, leading to potential mechanical destruction and defective measurement results.
Innovation Solution
A measuring system with two temperature sensors positioned on the first and second ends of the tubes, generating a transducer temperature value that represents an average or weighted average of the tube wall temperatures, allowing for improved metrological compensation of temperature distribution and reducing mechanical load on sensors and electrical lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If temperature sensors are positioned at limited measurement points on the tubes, then the device complexity is reduced, but the measurement precision of transducer apparatus temperature deteriorates
Solution Approach 1:
The patent divides the temperature measurement task into multiple discrete measurement points along the tube (at least three different positions including inlet, outlet, and intermediate sections). Each sensor captures local temperature data, and the control unit processes these segmented measurements to determine the overall transducer apparatus temperature, thereby improving measurement precision without requiring a single complex sensor system.
Solution Approach 2:
The patent transitions from single-point temperature measurement to multi-point spatial distribution measurement. By measuring temperature at multiple positions along the tube length and processing these spatially distributed measurements, the system achieves more accurate representation of the transducer apparatus temperature while maintaining relatively simple sensor hardware.
2Strength
If temperature sensors are positioned closer to the tube ends, then the mechanical load on sensors and electrical lines is reduced, but the measurement precision of transducer apparatus temperature deteriorates due to dynamic heat equilibration processes
Solution Approach 1:
The patent segments the tube into multiple measurement sections (inlet section, outlet section, and intermediate sections) and places sensors at specific positions within these segments. This segmentation allows the system to capture temperature distribution patterns while positioning sensors away from high-stress end regions, balancing mechanical durability with measurement accuracy.
Solution Approach 2:
The control unit processes temperature measurements from multiple positions and uses this feedback information to determine the transducer apparatus temperature. By continuously monitoring temperature at multiple points and processing the data, the system compensates for dynamic heat equilibration effects and provides accurate temperature representation even when sensors are positioned to minimize mechanical load.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances measurement accuracy by providing a more representative transducer apparatus temperature, reducing the risk of mechanical destruction and improving the reliability of fluid parameter measurements, while also offering redundancy for temperature measurement in case of sensor failure.
Implementation Method 1
a first temperature sensor coupled mechanically and thermally conductively with the wall of the first tube... and positioned closer to the first end of the first tube than to the second end of the first tube
Implementation Method 2
a first temperature sensor... adapted to register a first measuring point temperature... and to convert such into a first temperature measurement signal
Data Source
AI summary
The measuring system includes a transducer apparatus with two tubes. Each tube is adapted to be flowed through by a fluid from an inlet end toward an outlet end and to be caused to vibrate. An electromechanical exciter mechanism excites and maintains mechanical oscillations of each of the tubes, and a sensor arrangement registers mechanical oscillations of at least one of the tubes. The transducer apparatus includes two temperature sensors each being mechanically and thermally conductively coupled with a wall of the tube, wherein each of the temperature sensors registers a measuring point temperature, and converts such into a temperature measurement signal temperature. A measuring and operating electronics (ME) generates a transducer temperature measured value representing a transducer apparatus temperature so that a magnitude of the transducer temperature measured value is greater than a magnitude of the measuring point temperature and less than a magnitude of the measuring point temperature.