PRODUCT DATA
65-0267—09
C7961E,F Dynamic Self-Check
Ultraviolet Flame Detector
APPLICATION
The C7961E,F are dynamic self-checking flame detectors for
sensing the ultraviolet radiation generated by the combustion
of gas, oil, or other fuels.
FEATURES
• Oscillating shutter interrupts ultraviolet radiation
reaching the UV sensor at a 3 Hz rate to provide the UV
sensor tube checking function. The 7800 Series
Control conducts an additional shutter test every 5
seconds.
• Detectors can be mounted horizontally, vertically or at
any other angle.
• Quartz viewing window is field replaceable.
• Threaded conduit fitting and color-coded leadwires
allow rapid electrical installation.
• 3/4 in. and 1 in. NPT mounting models available.
• Models available with Molex Woodhead
1R5006A20A120 (Formerly Brad Harrison® 41310)
connector.
• A swivel mount is available to facilitate flame sighting.
• -40°F (-40°C) rated ultraviolet sensing tube.
• Incorporates UV sensor tube checking feature; used
with R7851C Dynamic Self-check Amplifiers.
• High pressure 50 psi (345 kPa) quartz viewing window,
magnifying lens and antivibration mount are available
as accessories.
• Housing meets NEMA 4 enclosure standards (C7961E).
• Protective heat block built into mounting flange.
• C7961E, F are immune to x-ray.
C7961F:
• Housing designed to be explosion-proof and
Underwriters Laboratories Inc. listed for use in
hazardous locations; Class I, groups C and D; and
Class II, groups E, F and G.
• Viewing window rated for 100psi (690 kPa).
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 3
Wiring (Fig. 10) ................................................................. 7
Adjustments and Checkout ............................................... 8
Troubleshooting ................................................................ 9
Service ............................................................................. 10
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