Detector and Sprinkler Activation Time

Calculate the time for a heat detector or sprinkler head to reach its activation temperature under a growing t² fire, using the DETACT ceiling-jet correlations.

A fire below a ceiling with a detector offset horizontally, showing the radius from the fire axis to the detector and the ceiling height above the fire.
The radius is measured horizontally from the fire axis to the detector.
Fire
Geometry
m
m
Detector
m^½·s^½
°C
°C