When designing blowing systems for a high-temperature reactor, we can primarily use mathematical tools that allow us to determine the state quantities of the flowing medium using a calculation. In many cases, however, it is necessary to verify these calculated quantities, e. g. by using a model. On the other hand, there is also a frequent situation occurring, when information needs to be obtained on an existing blowing system or its parts. In both cases, we must determine the basic parameters and properties of the flowing medium. These basic parameters include, in particular, the pressure and temperature of the flowing medium, and we address them as the so-called evaluating quantities. Specially designed probes are used to measure these evaluating quantities of the flowing medium, which differ from each other, depending on which flow parameter is being measured by the given probe. The submitted paper lists selected types of probes that can be used to measure the evaluating quantities of the lance outflows in the blowing systems which are used to blow gas media into the workspace of the high-temperature reactors. The possibility to compare calculated results to the measured ones supplies the designers of the blowing systems with important information on the reliability of their mathematical calculations and, thus, they can refine and correct their calculations so that they correspond as closely as possible to the real state.Keywords: Gas blowing, lance outflows, blowing systems, press probes, temperature probes
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