12
3 Product Description
Additional letters are describing additional properties:
The suitability of the device types may differ from that indicated in the table depending on par-
ticular circumstances.
Example type identification:
FFS07 IR-1 T
FFS08 IR-1 T S2
FFS07 IR-1 T Ex
Fig. 3-2 Spectrum of the flame
Addl.
Identifyer
especially
used with
Property Area
T IR in the field of low
frequencies
little turbulent flames, such as in strong
recirculation
S2 IR low sensitivity high residual radiation out of the com-
bustion chamber, high intensity such as
at some pulverised fuel burners
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