What is the name of the nozzles used for sampling steam purity?

The isokinetic sampling nozzle is specifically designed for sampling steam purity because it maintains an equal velocity between the steam and the sample being drawn. This is crucial for accurately assessing the quality of the steam, as variations in sampling speed can lead to inaccurate results. The isokinetic principle ensures that the sample collected is representative of the actual steam conditions, reducing the risk of any biases that could arise from changes in flow rates.

In contrast, other types of nozzles may not maintain this critical balance of velocities. For example, a standard sampling nozzle might not account for the differences in flow conditions, potentially leading to inaccurate sample representation. Similarly, a vortex sampling nozzle is typically utilized for different applications involving fluid dynamics but does not specifically cater to steam purity sampling. A pressure sampling nozzle, while useful in other contexts, does not focus on maintaining isokinetic conditions essential for evaluating steam purity. Therefore, the isokinetic sampling nozzle is the most appropriate choice for ensuring reliable steam purity analysis.