Smoke Detector Sensitivity

[princetonbrian]

Can anyone tell me what year NFPA started requiring sensitivity testing of smoke detectors. I have some simplex smoke detectors dated 1986 with no sensitivity listing on the label. Just wondering if these were made prior to mandated sensitivity testing.

 

[cdafd]

Will have to look at 72.

Is there an exception in it not to require sensitivity testing, for smoke detectors mad before a certain year??


That is basically your question asked a differ my way, I take?

 

[cdafd]

not seeing an exception, except maybe have to test to manufacture testing procedures


14.4.4.3.4 To ensure that each smoke detector is within its listed and marked sensitivity range, it shall be tested using any of the following methods:


(1)
Calibrated test method


(2)
Manufacturer’s calibrated sensitivity test instrument


(3)
Listed control equipment arranged for the purpose


(4)
Smoke detector/fire alarm control unit arrangement whereby the detector causes a signal at the fire alarm control unit where its sensitivity is outside its listed sensitivity range


(5)
Other calibrated sensitivity test methods approved by the authority having jurisdiction

 

[cdafd]

one more::::
from the commentary

Older detectors manufactured prior to current standards did not require a sensitivity range to be marked on the product. These detectors should have a sensitivity of between 0.5 and 4 percent per foot obscuration (light gray smoke) depending on the type of the detector. Sensitivities less than 0.5 percent obscuration per foot may lead to unwanted alarms, and sensitivities over 4 percent per foot may cause delays in or failure of detection.