1
TYPE 45FS1/45UVFS1
MODEL 1000, 1001
FLAME
SIGNATURE
SCANNER™
DESCRIPTION
The FIREYE
®
Type 45FS1 and 45UVFS1
Signature Scanner™
flame detectors incorporate an inno-
vative flame detection method to determine the presence or absence of a target flame in a single or
multiple burner environment. Both scanners utilize a software algorithm that constantly compares
the amplitude-frequency characteristics of the target flame with the amplitude-frequency characteris-
tics that they learn during a setup procedure. This amplitude-frequency characteristic will be referred
to as the signature of the target flame. During the learn mode the scanner performs “real time” anal-
ysis of the frequency spectrum of the AC signal of the target flame to determine the type of flame
being sensed (e.g. burner flame-on, flame tips from adjacent burners, background flame, no flames,
etc.) and determines a specific shape or
Flame Signature
of the flame’s frequency spectrum. When
the scanner is put in the run mode, the
Signature Scanner
controls constantly compare the targeted
flame signal with the learned signatures to determine the status of the flame.
The 45FS1/45UVFS1 then provides a pulsed output to indicate that the flame signal matches its
learned flame signature. This pulse output is analogous to the strength of the flame signal, allowing
the scanner to be compatible with the 25SU3 and 25SU5 style flame amplifiers.
The main difference between the 45FS1 and 45UVFS1 scanners is the flame detector utilized in each
scanner. The 45FS1 scanner incorporates a large area lead sulfide cell sensitive to the infra-red range
more suitable for coal and/or oil type flames. This cell can detect a wide range of background bright-
ness without experiencing cell washout. The 45UVFS1 scanner uses a super-blue silicon cell sensi-
tive to the UV range, as well as an automatic signal amplification circuitry making it applicable for
all fuel types (gas/oil/coal).
The
Signature Scanner
flame detectors have the ability for remote communication to review and
program the system setpoints as well as download and upload the “learned” flame signature data
from one scanner to another using an IBM compatible PC and the FS700 software program. Refer to
Bulletin CU-39 for details.
The 45FS1/45UVFS1 Scanners have an eight (8) character LED display, a three (3) pushbutton key-
pad, and a program enable pushbutton to program and/or review the various system setpoints and
operating parameters associated with the setup procedure and operation of the scanner. Flame signa-
tures can be learned for a number of fuel types (gas, oil, coal, etc.). The selection of the flame signa-
ture is determined via the keypad or the remote file selector switches.
CU-32
APRIL 5, 2013
