Lokalisatie Maskergelaatslekkage (Localization of Face-Seal Leak Sites)

摘要

A number of methods are described for determining the position leaks in the facial seal of a gas mask, among which there are: measuring the transport of sounds and light through leaks, measuring the deposition of aerosols on the face near leaks, and determining the amount of a gas that leaks into the mask at specific positions within the mask by means of samplers. The first three methods are complicated by the complex shape and the material properties of the mask and by possible health risks for the test persons. The last method is complicated by the airflow in the space between the mask and the face. This airflow can transport the test gas past samplers that are not in the neighborhood of the leak. However, if electronic sensors were used instead of samplers, the gas leakage test has potential. The disadvantages are the high cost and the potential leaks near the hole through which the cables attached to the sensors are lead out of the mask.