RESPIRATORY PROTECTION EQUIPMENT

摘要

A respirator has one or more electrodes (17) of e.g. conductive elastomer disposed on the surface of a face sealing member (6) opposite to the surface which seals against the user's face. In use the integrity of the seal formed between the sealing member and the user's face is monitored by monitoring the electrical capacitance across that member between the electrode(s) and the user's face.