IRIS S550, Руководство по применению, Страница: 3 / 19

S550 GENERAL DESCRIPTION
The IRIS Model S550 is a state- of- the-art flame
monitor viewing head utilizing two types of
detectors, an IR (infrared) solid state and UV
(ultra violet) tube.
The S550’s work with the latest version of the
P520/P522 signal processors. Like other viewing
heads in the S500 family, the S550’s produce
output pulse rates propor tional to the flame signal
strength; the pulse rates are displayed at the front
panel of the signal processors. But, unlike the
other members of the S500 family, certain
parameters in the S550 viewing head can be
selected or adjusted remotely from the front panel
of the P520/P522 signal processors. The
parameters are:
a) UV gain 0-99
b) Fil ter Se lec tion 1-8
c) IR gain 0-699
Once adjusted, the new parameters are stored in
EEPROM in the signal processor. If power is
removed from the signal processor which powers
the viewing head and then reapplied, the signal
processor then automati cally re-sends the stored
parameters out to the S550 viewing head. In
addition, at the front panel of the signal processors
the operator may also select “CAL”, a semiau to
-
matic mode which will help to speed up the S550
setup. This is explained in detail in the section
called
CALIBRATING THE S550
on page 10. Also
notice the
FLOWCHART OF S550 PROGRAMMING
,
Fig ure 3 on page 15. Thus the S550 is a dual-
sensor viewing head where the gain and filter
selec tions are adjusted remotely and stored in the
P520/P522 signal processors.
S552 GENERAL DESCRIPTION
The S552 is for IR sensing only. It is basically an
S550 without a UV capability. The P520 or P522
will be aware of which viewing head of the S550
family is connected to it so that only those adjust -
ments which are appro priate to the S552 will be
made available to the operator. These adjust ments
apply to the S552:
a) Filter Selection 1-8
b) IR gain 0-699
When it comes to features like CAL, which will be
described later, the operator is only given those
choices which are appro priate. For example, he
does not have to choose between calibrating with
the UV sensor or the IR sensor; in CAL he is only
offered the choice of calibrating with the IR sensor
or not. This is shown in the
FLOWCHART OF S552
PROGRAMMING
, Fig ure 4 on page 16.
To keep the manual straightforward only the
operation of an S550 is described. If one has an
S552 one should simply disregard references to
those features of the S550 which are UV-related.
S556 GENERAL DESCRIPTION
The S556 is for UV sensing only. It is basically an
S550 without an IR capability. The P520 or P522
will be aware of which viewing head of the S550
family is connected to it so that only the
adjustment which is appro priate to the S556 will
be made available to the operator:
a) UV gain 0-99
When it comes to features like CAL, which will be
described later, the operator is only given those
choices which are appro priate. For example, he
does not have to choose between calibrating with
the UV sensor or the IR sensor; in CAL he is only
offered the choice of calibrating with the UV
sensor or not. This is shown in the
FLOWCHART
OF S556 PROGRAMMING
, Fig ure 5 on page 17.
To keep the manual straightforward only the
operation of an S550 is described. If one has an
S556 one should simply disregard references to
those features of the S550 which are IR-related.
COM PARI SON WITH OTHER MODEL 500
SE RIES VIEW ING HEADS
The S550 uses a Germanium sensor for IR
detection like an S511 and uses a high- voltage
vacuum tube sensor for UV detection like the
S506’s, but
both
sensors are in the same housing
in the S550. The pulses from the UV and IR
sensors are summed inter nally into a single pulse
stream out to the signal processor.
A dual-LED indicator is used to indicate the pulse
rate out of the S550. It is visible at the rear of the
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IRIS MODEL S550 APPLICATION MANUAL