| Document ID (ISN) | 62741 |
| CIS number |
94-1320 |
| ISSN - Serial title |
0002-8894 - American Industrial Hygiene Association Journal |
| Year |
1993 |
| Convention or series no. |
|
| Author(s) |
Brown R.C., Vaughan N.P. |
| Title |
Measurement of the leakage and fit factor of a filtering facepiece by continuous monitoring of pressure pulsations |
| Bibliographic information |
Aug. 1993, Vol.54, No.8, p.409-416. Illus. 10 ref. |
| Abstract |
The fit factor of filtering respirators is measured by continuous monitoring of the pressure produced in the respirator cavity by injecting and withdrawing a volume of air so that the volume varies sinusoidally with time. Comparison between measurements made when leaks occur and the measurements made without leakage enables a fit factor to be calculated for each breath. Results obtained by the use of this method on a filtering respirators worn by a manikin agree with bubble flowmeter measurements, although systematic differences exist. The method is most accurate when leakage is large, and is potentially useful for fit factors up to about 50, and leakages down to about 2%. |
| Descriptors (primary) |
air purifying respirators; leakage testing; equipment testing; personal protective equipment |
| Descriptors (secondary) |
evaluation of equipment |
| Document type |
D - Periodical articles |
| Country / State or Province | United Kingdom |
| Subject(s) |
Personal protection
|
| Broad subject area(s) |
Chemical safety
|
| Browse category(ies) |
Respiratory protection
Personal protection
|
