The technique of weighing is one of the most accurate measuring methods for experimental investigations. For numerous applications, however, it is not possible or useful to locate a balance or a weighing instrument in the measuring chamber itself (e.g. at high temperatures, high pressures, aggressive atmospheres). In many of these cases magnetic suspension balances could be a suitable solution.
By means of magnetic suspension balances it is possible to accurately measure the weight changes of a sample located in a closed measuring cell made of metal or glass. In these cases, the balance (a commercial analytical or micro balance) is located outside the measuring cell at ambient atmosphere and the sample weight is transmitted contactless “through the wall" of the measuring cell. The operating principle is illustrated in the picture.