Siemens QRI Series Quick Start Manual page 8

Spectral curves
Flames
Legend
Sensitivity of flame
detector
8/12
Building Technologies
Relative intensity of radiation
3
2
1
0
0
1
Spectral emission of radiation of luminous and nonluminous flames at 1,500 K (extract
from VDI Report no. 423, 1981).
a Black body radiation
b Pulverized coal flame
c Oil flame
d Gas flame
100 %
10 %
1 %
1 1.5
a
b
c
d
2
3
Wave length (µm)
3
2.5
2
Wave length (µm)
b
d
4
4
3.5
CC1N7719en
5
17.07.2018