Analyse properties of any fluids with our m:explore.eis measurement system – our technology can assess properties of liquids! Using electrochemical impedance spectroscopy (= eis), you can distinguish the components of a complex substance.
Increase the efficiency of your resources!
Process optimisation: Improve process control!
Generate a fingerprint of your fluid!
User-friendly due to intuitive operation!
Tailor the system to your requirements!
USE CASES: Industrial Sectors
USE CASES: Manufacturing Process
Why using m:explore.eis?
How does m:explore.eis work?
The newly developed device series m:explore.eis represents a complete system for the compact measurement of any liquid by electrochemical impedance spectroscopy (EIS). The measuring box can be used as a bypass to transport liquids into the internal measuring cell by an integrated peristaltic pump. The device can operate in manual, semi-automatic or fully automatic mode. The measuring cell has a temperature control unit to set and maintains target temperatures from room temperature to approx. 98 °C. The devices of the measuring box series can record an impedance spectrum in the frequency range from a few 100 Hz to 6 GHz.
FAQ - Frequently Asked Questions Impedance Spectroscopy
|What is impedance spectroscopy?||+|
Impedance spectroscopy (also dielectric spectroscopy or electrochemical impedance spectroscopy) is a non-destructive, fast and low-cost measuring method that can record electrical material parameters, such as impedance, conductivity and permittivity. These parameters are frequency-dependent and vary based on the frequency of the alternating electric fields they are measured with.
Ultra-wideband impedance spectroscopy allows for insight into the examined materials that would otherwise not be obvious at first glance. This can be interesting for users that would like to have information that goes beyond conventional sensors. Various process parameters are reflected in electrically-measured quantities and can be captured with UWB technology.
In some cases, the direct measurement of one parameter is either not possible or cannot provide the required information. In these scenarios, the information can be derived through post-processing or a combination of the measured data.
|How does impedance spectroscopy work?||+|
An electromagnetic (EM) wave is emitted from the applicator into a substance.
The frequency-dependent material parameter permittivity εr describes the transmissibility of an EM wave through a substance and is measured over a broad frequency
range with a single measurement. This allows for a differentiation between very similar substances that is not possible with a single narrowband measurement.
|What does the Ilmsens impedance spectroscopy consist of?||+|
At Ilmsens, the impedance spectroscopy consists of the following three parts:
|How accurate are the results from the Ilmsens ultra-wideband impedance spectroscopy?||+|
In the impedance spectroscopy, the accuracy of results depends on the following:
If components of a liquid show similar permittivity values, only larger concentration changes become detectable.
In order to illustrate which materials are similar in their electric properties, the following table displays several exemplary materials and their permittivity values based on the indicated sources.
In contrast to some sources, it should be noted that permittivity values are not constant, but rather temperature and frequency dependent. Therefore, the permittivity values in the table can only provide a first indication.
Example: Water (εr = 80) and oil (εr = ca. 3) can be differentiated very well. Even small concentrations can be easily detected.
|What are possible applications for impedance spectroscopy?||+|
Impedance spectroscopy helps to detect the composition of mixtures of substances, such as:
|What are the advantages of Ilmsens ultra-wideband technology compared to conventional impedance spectroscopy?||+|
The main advantage is the ability to differentiate between components of a complex substance: Through ultra wideband signal measurements, the typical behaviour is found for a given substance component. Just as a fingerprint can be assigned to a specific human being, a certain substance component can also be assigned to an impedance spectrum. The wider the frequency interval (impedance spectrum) over which the measurements are carried out, the more clearly the assignment succeeds.
Two substances might be similar in a limited frequency range, but the wider the measured frequency range, the more likely it is to find differences in a specific frequency range.
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