Thermally Insulating Casing for Fluid Measurement Stability
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Solution Overview
Problem
Existing measuring devices for fluid media, such as meters, face complexities and high costs due to freely hanging cable connections that are not adequately protected, leading to measurement errors influenced by environmental parameters and potential corrosion.
Innovation Solution
A thermally insulating casing is fitted externally around the measuring tube, with channels to guide and fix cable connections, providing mechanical protection and thermal insulation, preventing condensation and bacterial growth, and allowing for more stable and accurate measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cable connections are exposed and run freely from measuring device to control unit, then device complexity is reduced, but measurement precision deteriorates due to environmental parameter interference
Solution Approach 1:
The patent introduces a casing as an intermediary component that houses the cable connections and provides thermal insulation. This casing acts as a mediator between the measuring device and the external environment, protecting the cable connections from environmental parameters while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent employs a simple plastic casing that provides sufficient protection without requiring complex or expensive materials. The casing is designed to be functional and straightforward, avoiding over-engineering while still achieving the desired protection level for the cable connections.
2Ease of manufacture
If cable connections are exposed without adequate protection, then manufacturing cost is reduced, but reliability deteriorates due to potential corrosion and environmental damage
Solution Approach 1:
The casing serves as a protective intermediary that shields cable connections from environmental damage such as corrosion and physical damage. This simple protective barrier significantly improves reliability without adding complex manufacturing processes or expensive materials.
3Device complexity
If no thermal insulation is provided, then device complexity is reduced, but measurement precision deteriorates due to convection and heat dissipation effects
Solution Approach 1:
The casing performs multiple functions simultaneously: it provides mechanical protection for cable connections, thermal insulation to reduce convection and heat dissipation, and structural support. This multi-functionality achieves improved measurement stability without proportionally increasing device complexity.
4Ease of operation
If cable connections are loosely arranged in housing space, then ease of assembly is improved, but measurement precision deteriorates due to temperature changes and outgassing
Solution Approach 1:
The thermally insulating casing acts as a mediator that creates a stable thermal environment for the cable connections. This insulation prevents temperature changes and outgassing that would otherwise affect measurement accuracy, while still allowing for relatively easy assembly of the components within the casing.
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
The solution enhances measurement stability and dynamics by reducing convection and heat dissipation, preventing measurement errors from temperature changes and outgassing, while maintaining a compact and cost-effective design.
Implementation Method 1
reduces free convection within the medium, especially at high temperature differences between the medium and ambient temperatures and low flow rates
Implementation Method 2
The casing is additionally thermally insulating, meaning it has a sufficient wall thickness to effectively create an insulating enclosure
Data Source
Figure 1
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AI summary
The invention relates to a measuring device for detecting at least one measurement value of a fluid medium, comprising a measuring tube with a measuring device arranged thereon and/or therein and a control and/or processing device arranged on the exterior of the measuring tube. The measuring device is connected to the control and/or processing device via one or more cable connections which run on the exterior of the measuring tube to the control and/or processing device. The measuring tube (2) is at least partly housed by a thermally insulating casing (8) which is placed on the exterior of the measuring tube or at a distance therefrom by a defined gap (25) in a formfitting manner at least in some sections and in which the one or more cable connections (6) are received in one or more channels (6).