(c) Copyright July 09
[4] ‘Fire Test Comparisons of Ion and Photoelectric Smoke Detector Response Times’,
Fire Suppression and Detection Research Application Symposium, Orlando, Florida, USA
J Qualey, L Desmarais and J Pratt; February 7 - 9, 2001
3 of 4 . . .
Slides: 25, 26, 27 and 28:
These slides will show you not all testing demonstrates that the ionization is fast during a flaming fire. In a conference sponsored by NIST in 2001, a UL test was presented.
The results again show the photoelectric’s were much faster to respond in a smoldering fire, depending on the placement of the detector to the fire, by as much as almost 19 minutes when they were set at the sensitively levels sold to home owners.
Note:
The Photoelectric in this test also was faster by literally a few seconds than the ionization in the flaming tests as well.
Remember that sensitively levels can be manipulated by manufacturers. When the sensitivity levels were set the same, to the most sensitive levels, the Photoelectric was 11 seconds faster than the ionization in the flaming tests but was 30 minutes faster in the smoldering tests.
NIST 12th Conference on Automatic
Fire Detection - March 2001
Download
HERE > > >
