The determination of the concentration of various liquids plays a crucial role in numerous procedures of different processes. In this process, the ratio of two substances to each other in a mixture or solution is measured and evaluated.

A central factor in this concentration measurement is the amount of substance concentration. It is defined as the amount of a substance per unit volume and is particularly crucial in the analysis of solutions. It enables an accurate assessment of the chemical composition and reactivity. Thus, the amount of substance concentration becomes an indispensable tool in many areas.

In addition, there are various measurement ranges that allow the amount of substance concentration to be measured in different ways. They significantly expand the possibilities of concentration measurement and increase flexibility with regard to the specific requirements of the mixture or solution to be analyzed.

Finally, the amount of liquid to be analyzed plays an important role. It must be sufficient to allow accurate measurement, but not so large that it distorts the measurement result or makes the measurement unnecessarily complicated.

An important aspect of concentration measurement is the amount concentration (molarity) in a solution, which is defined as the amount of a substance per unit volume. This is particularly relevant in the analysis of a solution where the amount concentration is crucial for assessing the chemical composition, concentrations, and reactivity. Accurate measurement of the concentration of a substance in a solution is essential for controlling processes, ensuring quality, and conducting scientificinvestigations.

The ultrasonic measurement method of LiquiSonic^®

The basis of the measurement method is a time measurement that can be realized very accurately and with long-term stability. From the sound velocity, the concentration or density of a liquid is calculated. Other parameters can also be determined, such as the Brix content, solid content, dry matter, or suspension density.

Our LiquiSonic^® Concentration and density measuring devices are used in various processes for the analysis of liquids.

In a typical case, a calibration curve is determined from the relationship between sound velocity and concentration. Based on this, the corresponding concentration is calculated from each measured sound velocity value.

Limit value monitoring

Our ultrasonic measuring devices have no mechanical parts that can wear out or age. They offer outstanding advantages over competing measurement methods for determining concentration and density.

High reliability in determining the substance concentration

The measurement method only requires a precise time measurement to determine the substance concentration. From the sound transit time and the known distance between transmitter and receiver, the sound velocity is calculated. The typical sensor design includes transmitter and receiver in a compact housing.

The measurement method is independent of the conductivity, color, and transparency of the liquid due to the sensors and is characterized by high reliability in determining the substance concentration. The measurement accuracy of the devices is between 0.05 m% and 0.1 m%. In addition to sound velocity measurement, all LiquiSonic^® sensors have an integrated measurement of temperature for temperature compensation in the process.

Applications of concentration measurements

Concentration measurement is one of the essential methods to analyze the quality and safety-relevant characteristics of products and substances. Thus, it plays a crucial role in several industries. There are various methods for measuring a substance concentration in a solution, depending on the type of substance and the requirements of the application.

A practical example of the application of concentration measurement can be found in the pharmaceutical industry: Here, the precise determination of the concentration of an active ingredient in medicines is essential to ensure their effectiveness and safety. This demonstrates the importance of precise measurement methods for determining the concentration of the amount of substance in quality assurance.

Further examples:

• Chemistry/Chemical Production (For monitoring the composition of mixtures)
• Food production (For controlling the product quality of food)
• Metallurgy (To check the quality of metal ores)
• Environmental analysis (For calculating pollutants in water)

In addition, concentration measurement is also used in many other areas, for example in science.