Multi-stage Mobile Phase Scale for Variable Bottle Capacity
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Solution Overview
Problem
Existing weight sensors for liquid chromatographs are either too sensitive for small mobile phase bottles and insufficient for large ones, requiring multiple types to accurately measure varying capacities, leading to increased costs and unnecessary sensor waste.
Innovation Solution
A remaining mobile phase scale with multiple stages and sensors, featuring a mode switcher and calculators to adapt measurement modes for normal and large capacity bottles, using a detachment-attachment holder to distribute load and combine stages for accurate monitoring across various bottle sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a weight sensor with a large measurement weight range is used, then load-resistant performance is improved and it can measure large capacity mobile phase bottles, but measurement sensitivity decreases and measurement accuracy becomes insufficient for small capacity bottles
Solution Approach 1:
The weighing scale is divided into multiple individual stages (first stage, second stage, etc.), each with its own weight sensor. This segmentation allows the system to measure small bottles on individual stages with high sensitivity while combining multiple stages to measure large bottles with sufficient load capacity.
Solution Approach 2:
Multiple individual stages are merged into a common stage that can function as a single measurement platform. When combined, the stages provide sufficient load-resistant performance for large capacity bottles while maintaining the ability to use individual stages for small bottles when needed.
2Measurement precision
If multiple types of weight sensors with different measurement weight ranges are prepared, then measurement accuracy for various bottle capacities is improved, but device cost increases
Solution Approach 1:
The weighing scale is designed with multiple individual stages that can function both independently for small bottles and in combination for large bottles. This multi-functional design eliminates the need for multiple different sensor types, reducing device cost while maintaining measurement accuracy across various bottle capacities.
Solution Approach 2:
The system dynamically adapts its measurement configuration based on bottle size. Small bottles are measured on individual stages using single sensor readings, while large bottles are measured on the combined common stage using summed sensor readings, optimizing measurement accuracy without requiring multiple sensor types.
3Measurement precision
If only a specific capacity mobile phase bottle is used, then measurement accuracy is improved, but unnecessary weight sensors remain present causing waste
Solution Approach 1:
The system is designed to be dynamically adaptable to different bottle capacities rather than being optimized for a single capacity. The controller can selectively use individual stages or combine stages based on the actual bottle size, ensuring that all sensors remain useful and preventing sensor waste.
Solution Approach 2:
The measurement parameters of the weighing scale are changeable - the system can switch between measuring on individual stages or on the combined common stage. This parameter flexibility ensures that the same hardware configuration can accurately measure bottles of various capacities without leaving sensors unused.
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
Enables accurate monitoring of mobile phase remaining amounts in bottles of different capacities without the need for multiple sensors, reducing costs and ensuring reliable measurements for both small and large capacity bottles.
Implementation Method 1
a weight sensor having a large measurement weight range has high load-resistant performance and is suitable for measurement of the weight of a large capacity mobile phase bottle
Data Source
AI summary
A remaining mobile phase scale includes a weighing scale (2) including a plurality of individual stages (10A, 10B) on which mobile phase bottles containing a mobile phase are placed and a plurality of individual weight sensors (12A, 12B) that respectively measure weight of mobile phase bottles respectively placed on the plurality of individual stages (10A, 10B), a detachment-attachment holder (4) detachably and attachably placed on the plurality of individual stages (10A, 10B) such that the plurality of individual stages (10A, 10B) are integrated as one common stage, and a mobile phase monitor (6) that monitors a remaining amount of a mobile phase in mobile phase bottles, and the mobile phase monitor (6) is provided with a mode switcher (28) configured to selectively switch a mobile phase monitor mode to one of a normal mode and a large capacity mode.