Liekinvalvontamenetelmät

Liekinvalvontamenetelmät refer to the various techniques and technologies used to detect the presence of a flame. These methods are crucial for fire safety systems, industrial process control, and other applications where early flame detection is vital. Common liekinvalvontamenetelmät rely on sensing the electromagnetic radiation emitted by a flame.

Infrapunavalvonta (infrared surveillance) is a widely used technique. Flames emit infrared radiation across a spectrum, and infrared sensors are designed to detect specific wavelengths associated with combustion. Ultraviolet (UV) surveillance is another common approach. Flames also emit ultraviolet light, and UV sensors can identify these emissions. Some systems combine both IR and UV detection for increased accuracy and to reduce false alarms, as certain conditions might trigger one type of sensor without an actual flame present.

Other liekinvalvontamenetelmät include visual flame detection, which uses cameras and image processing algorithms to identify flame patterns. These systems can analyze color, shape, and movement to distinguish flames from other heat sources. Ionisaatiovalvonta (ionization surveillance) detects changes in the electrical conductivity of the air caused by the ions produced during combustion. Each method has its advantages and disadvantages regarding detection speed, range, sensitivity, and susceptibility to environmental factors like dust or steam. The choice of liekinvalvontamenetelmä depends on the specific application, the type of fuel involved, and the environmental conditions.