All bodies produce infra-red radiation. The frequency and level of these emissions
is dependant on the temperature and physical nature
of the material and the event.
sampling the spectrum and degree of infra-red emissions permits defined analysis of the monitored condition. Fires, and even more importantly potential
fire conditions, can be detected when other forms of fire or heat sensor would be ineffective due to the rigors of particular application parameters and environments.
A variety of infrared detector types target the different forms of fire hazard monitoring. These including spark monitors, flame sensors & black-body heat detectors.
Patol Limited's Series 5000
Sensors are black body IR heat emissions detectors. The systems are "tuned" to indicate temperature anomolies in solid objects. Coal is an almost perfect "black-body", but is far from the only application.
5000 infrared sensors detect ignited material in a full flaming fire condition, but they also respond to material at abnormal but much lower pre-ignition temperatures.
latter ability is not matched by "Spark or Flame Detectors" that also monitor infra-red. These types are tuned to the different characteristics exhibited by those hazards.