Integrated Liquid Level and Specific Gravity Sensing Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional systems for measuring liquid level and specific gravity in containers are unable to independently determine changes in these parameters, often provide only general information, and are not suitable for corrosive environments or cost-effective manufacturing, requiring separate devices for each measurement.
Innovation Solution
An integrated assembly with a first sensor arrangement for measuring liquid level and a second sensor arrangement for measuring specific gravity, using movable sleeves and sensors such as optical, ultrasonic, or capacitive sensors, allowing independent detection and display of both parameters, and constructed from materials like plastic for corrosive environment compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional systems use a single sensor to detect liquid level and specific gravity changes, then the system is simpler and cheaper, but it cannot independently determine whether the change is due to liquid level or specific gravity
Solution Approach 1:
The patent combines multiple sensing functions (liquid level detection and specific gravity measurement) into a single integrated assembly. The first sensor detects liquid level by responding to the liquid surface, while the second sensor detects specific gravity by responding to liquid pressure at a fixed depth below the surface. Both sensors are housed together in one assembly, eliminating the need for separate devices and enabling independent measurement of both parameters simultaneously.
2Reliability
If metallic materials are used in measurement devices, then the devices are more durable and precise, but they cannot operate in corrosive environments
Solution Approach 1:
The patent changes the material parameter from traditional metals to non-metallic materials such as plastics or ceramics. This material substitution allows the sensing assembly to operate in corrosive environments while maintaining measurement functionality. The non-metallic materials resist corrosion from acids and other aggressive substances, enabling reliable operation in previously incompatible environments.
3Ease of manufacture
If two separate devices are used to measure liquid level and specific gravity, then each measurement can be precise, but the system is more expensive and requires more space
Solution Approach 1:
The patent merges two separate measurement devices into a single integrated assembly that performs both liquid level detection and specific gravity measurement. The first sensor measures liquid level by detecting the position of the liquid surface, while the second sensor measures specific gravity by detecting pressure at a known depth below the surface. This consolidation reduces manufacturing costs, minimizes space requirements, and eliminates the need for separate installations while maintaining measurement precision for both parameters.
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 independent measurement and display of liquid level and specific gravity in a single device, functioning effectively in corrosive environments and reducing manufacturing costs, while providing precise readings.
Implementation Method 1
a light emitting diode communicates with a phototransistor by transmitting a light signal that is received by the phototransistor. When the second sleeve moves between the light emitting diode and the phototransistor, it prevents the light emitting diode from communicating with the phototransistor.
Implementation Method 2
the ultrasonic sensor is mounted to the first sleeve and sends a signal which reflects off of the second sleeve and returns to the sensor. The level of the liquid may then be determined by the sensor by measuring the amount of time it takes for the signal to return to the sensor.
Implementation Method 3
the level of the liquid is determined by measuring changes in capacitance between conducting plates which are mounted to the first sleeve.
Implementation Method 4
The specific gravity gauge has a fixed specific gravity, and is displaced in the liquid relative to the second sleeve based on the specific gravity of the liquid.
Data Source
AI summary
An assembly for measuring both the level and specific gravity of a liquid in a container includes a first sensor arrangement for sensing the level of the liquid in the container, and a second sensor arrangement for sensing the specific gravity of the liquid. The first sensor arrangement measures and then independently outputs at least one signal relating to the liquid level in the container. The second sensor arrangement measures and then independently outputs at least one signal relating to the specific gravity of the liquid in the container, thereby providing an integrated device to measure both parameters of the liquid.