Operation - Honeywell 800 Series Manual

signal processors; it is not possible when using the
700ACSP or 700DCSP signal processors. The switch-over
from Channel A to Channel B can be implemented from
the burner control system. Refer to the P531/P532 user
manual, 66-2068, for further information regarding
switch-over and the use of Channels A and B with
independent settings.
ACCESSORIES
Orifice disks (kit M-702-6) - Used to reduce the signal
brightness in cases where the signal brightness is too
strong. Located immediately in front of the lens, it will
reduce the amount of signal to the sensor. Bag assembly
contains orifice disks and retaining rings. Orifice disks
come with 3/8, 1/4,
3/16 and 1/8 inch diameter holes. Contact the factory for
guidance in using orifice disks.
Insulating nipple (R-518-13) - 1/2-in. NPTM Ultem heat
and electrical insulating nipple typically used in
conjunction with a swivel mount and union.
VH insulating mounting block (700UA, 800UA) - 1/2 in.
NPTF Ultem heat and electrical insulating mounting
block, used in place of the Delrin mounting block. 1/4 in.
NPTF purge air connection. Typically used in conjunction
with a swivel mount. Rated for continuous service up to
320°F (160°C).
Swivel mounts, small (700-1, 700-2, 700-3) - All have
1/2 in. NPTM viewing head connections on one end with
varying process connections including 1 in. NPTF,
1/2 in. NPTF and
1/2 in. flanged.
Swivel mounts, large (M-701-1, M-701-2, M-701-2-FLG,
M-701-2-SS, M-701-3, M-701-3P, M-701-4) - All have 1
in NPTF viewing head connections, one end with varying
process connections including 2 in. pipe slip on, 2 in.
NPTF, 2 in. flanged, 2 in. NPTF in stainless steel
construction, 4.5 in. flanged with 3 bolts, 3 in. NPTF and 2-
bolt flanged. Appropriate fittings must be used to adapt
the 1/2 in. NPTF viewing head process connections.
Insulating locking coupler adapters (R-518-PT13, R-518-
PT13L) - 1/2 in. NPTM Ultem adapters insulate the
viewing head electrically and thermally and are used with
the R-518-CL13-HTG (R-518-PT13) or R-518-CL12-HTG
(R-518-13L) locking couplers. The R-518-PT13L has a
quartz lens.
Locking coupler (R-518-CL13-HTG) - Used with the R-
518-PT13 insulating locking coupler adapters. Process
connection end is 1/2 in. NPTF.
Connector
Locking coupler (R-518-CL12-HTG) - Used with the
R-518-PT13L insulating locking coupler adapters.
Process connection end is 1 in. NPTF.
ASY786 --> Replacement field wireable connector.
Cable and Connectors - S70X/S80X Viewing Heads
ASY782 -->15 foot C330S cable with pre-wired ASY786
connector.
ASY785 --> 50 foot C330S cable with pre-wired ASY786
connector.
HONEYWELL MODEL 700/800 SIGNAL PROCESSOR AND VIEWING HEAD
ASY785-200 --> 200 foot C330S cable with pre-wired
ASY786 connector.
Cable (C330S) - 4-conductor with drain, foil/braided
shield. Sold per foot.
Isolation Units (ISO-UNIT, ISO-UNITSS, ISO-UNITHPGT) -
All have 1 in. NPTF connections with 1/2 in. NPTF purge
ports and quartz window. Black anodized aluminum or
stainless steel construction. The HPGT version has a 1/2
in. thick quartz window for higher pressures. Appropriate
fittings must be used to adapt the 1/2 in. NPTF viewing
head process connections.
Air cooling canister (700ACC) - Has an air inlet port on
side. Used with vortex coolers.
Vortex coolers (M3208 and M3210) - Used with air cooling
canister. Contact your distributor or the factory for
selection assistance.
Cable restraints (800CR, 700CRLT) - Liquid tight S80X
and S70X cable restraint versions. The 800CR includes
the 700CRLT and the 800ACC-RING adapter.
Mounting blocks (700DA, 700DA-1, 800DA) - Delrin
replacement adapter/mounting blocks for S70X and S80X
viewing heads. All have 1/4 in. NPTF purge air
connections. Rated for continuous service up to 180F
(82C). The 700DA and 800DA have 1/2 in. NPTF process
connections while the 700DA-1 has a 1 in. NPTF process
connection. For more 1 in. NPT accessories that can be
used with the 700DA-1, refer to the S55XBE manual, 66-
2064.
USB to RS422/RS485 Converter (COMMOD) - Protocol
converter for use with external communication with a
remote computer.
Fiber Optic System Compatibility - The S70X and S80X
viewing heads are compatible with the Honeywell FASA
fiber optic extension products. The S700FOAD and
S800FOAD adapters are applicable, depending on the
application. Contact your distributor or the factory for
assistance with fiber optic selection and pricing.

OPERATION

IR Detector
The S702 and S802 viewing head models use a
Germanium photodiode, which responds to IR
radiation/flicker in the flame. Flame flicker is caused by
the combustion, or forced air injected in to the flame.
Combustion air can be mixed with the fuel (pulverized
coal) or can be introduced separately. In either case,
forced air is introduced in such a way as to aid the
combustion process. This air is usually made turbulent by
causing it to swirl with spin vanes located in the burner
throat. Flame flicker is created when turbulent air mixes
with the flame. It is composed of random frequencies and
the amount of high frequency flicker is dependent on the
fuel and the burner.
The S702, S702PF and S802 viewing head models
respond to flicker frequencies above 33Hz. All flicker
frequencies below the filters are ignored, so it is important
11 66-2069EP—08