A fire detection system that operates on the rate of temperature rise is a
- thermocouple system.
- thermal switch system.
- continuous loop system.
Explanation
A thermocouple detection system responds to the rate of temperature rise: a fast rise creates a large temperature difference between the active and reference junctions, generating enough voltage to trip the alarm, while a slow general heat soak does not. Thermal-switch and continuous-loop systems instead react to a fixed overheat level.
titanas20 asking:
Why not "continuous loop system"?
Community Comments (1)
M
Mhmd Posts: 4 19.12.2012 / 02:19
First you should understand how a thermocouple works!
It is a combination of two dissimilar metals. So when they are subjected to heat. It will expand at a different rate. This difference of hot and cold section creates a varying voltage proportional to the heat generated, the voltage can be take in to account for example 1 mv = 50 *C 2 mv = 100*c. The system can be calibrated to work in this way.
Fire detection is to detect fire or rise in temp. So the best thing is to use here is a thermocouple system.
Cheers!!
It is a combination of two dissimilar metals. So when they are subjected to heat. It will expand at a different rate. This difference of hot and cold section creates a varying voltage proportional to the heat generated, the voltage can be take in to account for example 1 mv = 50 *C 2 mv = 100*c. The system can be calibrated to work in this way.
Fire detection is to detect fire or rise in temp. So the best thing is to use here is a thermocouple system.
Cheers!!
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