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An electrical conductivity Inspection system (EC meter) measures the electrical conductivity in a solution. It has multiple applications in research and engineering, with common usage in hydroponics, aquaculture, aquaponics, and freshwater systems to monitor the amount of nutrients, salts or impurities in the water.
Common laboratory conductivity meters employ a potentiometric method and four electrodes. Often, the electrodes are cylindrical and arranged concentrically. The electrodes are usually made of platinum metal. An alternating current is applied to the outer pair of the electrodes.
The potential between the inner pair is measured. Conductivity could in principle be determined using the distance between the electrodes and their surface area using Ohm’s law but generally, for accuracy, a calibration is employed using electrolytes of well-known conductivity.
Industrial conductivity probes often employ an inductive method, which has the advantage that the fluid does not wet the electrical parts of the sensor. Here, two inductively-coupled coils are used. One is the driving coil producing a magnetic field and it is supplied with accurately-known voltage.
The other forms a secondary coil of a transformer. The liquid passing through a channel in the sensor forms one turn in the secondary winding of the transformer. The induced current is the output of the sensor.
The Global Electrical conductivity inspection system market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
FOERSTER GROUP Electrical conductivity measurement It determines physical and technical material properties. Typical applications include controlling the quality of manufactured products, testing material combinations, and sorting metals, alloys, and scrap metal.
The unit is also used for the maintenance of aircrafts, determining heat damage, and in-process controls during production and processing in the metallurgy sector. It features five different excitation frequencies and an extremely high measuring accuracy.
The unit retains this high level of accuracy even at a high frequency of 960 kHz, making it possible to measure very thin workpieces with great precision.
The measuring instrument is able to automatically standardize the measured value of the electrical conductivity to 20°C due to an integrated temperature compensation. The measurement quality meets Boeings (BAC 5651) and Airbus standards.
The FOERSTER SIGMATEST portable instrument makes it possible to determine the electrical conductivity of non-ferromagnetic metals using eddy current.
This allows the identification of mechanical and material properties and the easy monitoring of highly stressed parts. The electrical conductivity is also used for quality control, for example, to determine the purity of metals. In addition, it can also be used to check the homogeneity of alloys as well as the rigidity and hardness.
