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HONEYWELL MODEL 700/800 SIGNAL PROCESSOR AND VIEWING HEAD
66-2069—02 2
1. All models include Electronic self-check.
2. Flicker Frequency filter settings available for IR sensor
models.
3. Gain Selection available through Signal Processor.
The viewing heads, the viewing head connector, and the cable
provided are watertight, and have NEMA 4X ratings when the
connector is properly tightened with pliers and the cable is
protected from UV exposure.
The availability of both UV-sensing and IR/flicker-sensing
viewing heads ensures that the flame monitoring systems can
provide good discrimination in most single and some multiple
burners firing a single fuel. UV sensing is appropriate for
monitoring natural gas, some mixed gases and light oil flames.
IR/ flicker sensing is appropriate for monitoring heavy oil and
coal flames.
SPECIFICATIONS
Series 700 and 800 Viewing Heads
MODELS S702, S702PF, S702HF, S702HFPF, S706,
S706PF, AND MODELS S802, S802HF, AND S806
Electrical
24VDC Power is supplied by Signal Processor
Environmental
Viewing Head Sealing: NEMA TYPE 4X rated when the
molded connector ring is tightened with pliers and a UV
protection is provided for the cable by installing in conduit.
Ambient Temperature: -40°F to 185°F (-40°C to 85°C)
IR Detector Spec
S702, S702PF, S702HF, S702HFPF, S802, S802HF:
Germanium photodiode with spectral response 950nm to
1710nm (1/2 intensity points) and peak spectral response
at 1400nm
High Pass Filter Pickup: 33 Hz standard, 155 Hz high
frequency option (-HF)
IR Optical
Angle of View: 1 degree (1.45 in. dia. at 6 ft. or 3.7 cm dia. at
1.8 m)
UV Detector Spec
S706 & S706PF, S806: UVtron with spectral response 185nm
to 260nm and a peak response at 210nm
UV Optical
Angle of View: 5 degrees (1 inch per foot)
Cable & Connectors - S70X/S80X Viewing Heads
New installations - highest level of EMI shielding available:
ASY785 --> 50 foot C330S cable with pre-wired ASY786
connector.
ASY785-200 --> 200 foot C330S cable with pre-wired
ASY786 connector.
ASY786 --> Field wireable connector with shield.
Dimensions
Refer to Fig. 9 and Fig. 10.
Model 700ACSP & Model 700DCSP Signal
Processer
Electrical: Model 700ACSP
Primary Input Power: 85-265VAC, 50-60 HZ, 0.07A Max.
fused (with either V.H. connected)
Battery Backup Voltage: 22VDC to 26VDC, 0.2A DC Max.
fused (with either V.H. connected)
Electrical: Model 700DCSP
Primary Input Power: 22VDC to 26VDC, 250 mA Max. fused
(with either V.H. connected)
Battery Backup Voltage: 22VDC to 26VDC, 0.5A DC Max.,
fused (with either V.H. connected)
Outputs
Flame Relay: 2 form C contacts
Self-Checking Relay: 1 form C contact
Relay Contact Ratings: 5A at 125 VAC, 277 VAC, & 30 VDC;
1/8 HP 125 & 250 VAC
Analog Flame Signal: Isolated 0 to 20 mA or 4 to 20 mA
output for remote meters or DCS, 360 ohms maximum
resistance
Environmental
Ambient Temperature: 32°F to 140°F (0°C to 60°C)
Dimensions
Refer to Fig. 11 and Fig. 12.
Table 1. Available viewing head models and associated features.
Model Connector
Pipe Fit Connection
0.5 in. NPTM with 50-ft
(15.2 m) pigtail
UVTron
Sensor IR Sensor
High
Frequency
Filter 155Hz
Aluminum
Housing
Stainless Steel
Housing
S702 X X X
S702HF X X X X
S702PF X X X
S702HFPF X X X X
S706 X X X
S706PF X X X
S802 X X X
S802HF X X X X
S806 X X X