Combined Transfer Module for Direct Conductivity at Controlled Temperature

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Solution Overview

Problem

Conventional TOC analyzers rely on temperature compensation algorithms for conductivity measurements, which require knowledge of solution composition and temperature, and often use bulky devices with multiple conductivity cells, leading to potential measurement inconsistencies.

Innovation Solution

A device with integrated transfer modules and temperature control systems that maintain fluid at a specified temperature, using gas permeable membranes and conductivity sensors to directly measure conductivity without temperature compensation, ensuring accurate measurements at the desired temperature.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If temperature compensation algorithms are used to measure conductivity at 25°C, then conductivity values can be reported at standard temperature, but measurement accuracy deteriorates due to unknown solution composition and reliance on assumptions

Engineering Contradiction:

Improveconductivity measurement temperatureVSAvoidconductivity measurement accuracy

Core Design Contradiction:

TemperatureVSMeasurement precision

Solution Approach 1:

The patent changes the temperature parameter from a compensated calculation approach to a directly controlled measurement approach. By actively controlling the measurement cell temperature to match the reference temperature (25°C), the system eliminates the need for temperature compensation algorithms and their associated assumptions about solution composition, thereby improving measurement accuracy

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the computational/algorithmic system (temperature compensation calculations) with a physical control system (temperature-controlled measurement cell). Instead of calculating what the conductivity would be at 25°C based on assumptions, the system physically maintains the measurement cell at 25°C and measures directly, substituting mechanical/thermal control for mathematical compensation

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If multiple conductivity cells are used to measure separate streams, then conductivity measurements can be obtained, but device size increases and measurement consistency deteriorates

Engineering Contradiction:

Improveconductivity measurement capabilityVSAvoiddevice size and structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple measurement functions into a single conductivity cell by implementing temperature control directly on the cell. This consolidation eliminates the need for separate measurement streams and multiple cells, reducing device size while maintaining measurement capability through active temperature management

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent makes the single conductivity cell universal by equipping it with temperature control capability. This allows the same cell to accurately measure conductivity across different temperatures without requiring multiple specialized cells, enabling one device to perform multiple measurement functions

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 precise conductivity measurements at a specified temperature, eliminating the need for temperature compensation calculations and reducing measurement errors, while allowing for compact and efficient conductivity analysis.

Implementation Method 1

a gas permeable membrane disposed between the first transfer plate and the second transfer plate, wherein a portion of the first fluid channel and a portion of the second fluid channel are separated by the gas permeable membrane

Methodology Applied

Scientific EffectGas permeation: Permeation

Implementation Method 2

a temperature control system configured to heat or cool the first transfer plate and the second transfer plate of each of the plurality of transfer modules, wherein heating or cooling the first transfer plate and the second transfer plate heats or cools the fluid within the first fluid channel and/or the fluid within the second fluid channel to the desired temperature

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP4241078B1Combined transfer module with integrated conductivity measurement

Publication Date: 2025.10.01 BL TECHNOLOGY INC

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AI summary

A device for analyzing total organic carbon (TOC) within a fluid at a desired temperature can include one or more transfer modules, each including a first and second transfer plate. A first fluid channel is formed in the first transfer plate and a second fluid channel is formed in the second transfer plate. A CO2 permeable membrane is disposed between the first fluid channel and the second fluid channel and a temperature measurement device measures a temperature of a fluid within the first and/or second fluid channel. A temperature control system is configured to heat or cool the transfer plates. Heating or cooling the transfer plates heats or cools the fluid within the first and/or second fluid channel to the desired temperature. One or more conductivity sensors are configured to measure a conductivity of the fluid within the first and/or second fluid channel.