The face velocity can be controlled but will alarm if the alarm level falls to a condition where containment will be effected. Tha gas sensor samples a mixture of the air from between the two filters and if breakthrough of a chemical is detected the unit will alarm. This ensures that all parts of the filter are monitored. The safety filter means that work can be completed before the filters are changed. A filter clamping mechanism allows for easy loading of the filter and ensures an even seal at the filter face at all times.
All mechanisms are on the claen side of the filter.
Electronics are housed in a self-contained section out of the airflow and away from any contamination. The visual display gives a constant read-out of face velocity and can also be used to show the status of the unit and when servicing is required. Pt 1 Sect 6 and BS 7258 pt 4. Unique filter monitoring and identification ensures correct information is given to the operator. Quietly reassuring Low noise level- only 50dBa on Sensair 10.