When it comes to detecting smoke, time is essence. That's why we designed a test that simulates a state of emergency in real life.
The first thing to know is that there are two main types of fires for which these products are intended for: burning fires and burning fires.
The firefighter (or slow burning) refers to the combustion that occurs on the surface of solid material. Aerial fires produce large amounts of heavy smoke, but they cannot withstand a flame. Think of a cigarette that is slowly burning, but never shoots at flames.
Testing to detect smoke in progress.
A firefighter who can and will become a fire if the proper action is not taken immediately.
Flames are the ones that they get to know more about, and they usually arise from the ignition of any flammable material, such as flammable substance, wood, paper, etc. These generally produce less smoke than a firefighter, but are more destructive.
We built a chamber in which the smoke detector under the test was located and feeded the two different types of smoke through a chimney. Then, we directed the speed of the answer. The sooner the smoke detectors' alarm was activated, the better.
To simulate smoke coming from a firefighter, I flamed 300 g of coal and left to warm 10 minutes before feeding the smoke. I wanted to make sure that most of the coal is burned and that the smoke is thick enough to activate the alarm.
The recreation of the fire was easy, only 30 g of grated paper made the trick. Again, I provided a significant amount of smoke present before feeding it through the chimney and in the chamber.
On the great discomfort of my neighbors, who had to withstand the smoke -coming smoke, and to whom I sincerely apologize, I repeated the whole process three times after a smoke detector under the test and a kind of smoke, totaling six tests After smoke detector. Finally, on average I had the answer time. You can check them in the table below: