Honeywell C7061 Dynamic self-checking flame detector used with R7861 Dynamic Self-check Amplifiers for sensing the ultraviolet radiation generated by the combustion of gas, oil, or other fuels.
APPLICATION
The C7061 is a dynamic self-checking flame detector for
sensing the ultraviolet radiation generated by the combustion
of gas, oil, or other fuels.
This flame detector is available in two versions:
model C7061A for use in Standard applications, and model
C7061F for use in installations requiring explosion-proof
packaging. The flame detector is designed for use with either,
R7061 Dynamic Self-Check Ultraviolet amplifier and
• R4348 Flame Switch or,
or with,
R7861A Dynamic Self-Check Ultraviolet amplifier and,
• 7800 SERIES Burner Programmers
These configurations provide a closed-loop, self-checking
circuit which insures the integrity of both amplifier and flame
detector. Improper response simulated flame loss results in
a safety shutdown and/or alarm.
DESCRIPTION
The C7061A1020 and C7061F1003 detector models are
identical except for housings.
Model C7061F detector is for use in installations requiring
explosion proof packaging. The housing is conform the EExd
IIC T6 classification. More details for the explosion proof
housing can be found in the chapter Standards and
Approvals.
The C7061F model has a 1-inch NPT tapping for mounting
onto a sight pipe.
The terminal block on both models is of wire clamp type with
removable screws and is situated in the compartment of the
C7061. The UV cell contains an ultraviolet sensing tube,
shutter assembly, terminal block and magnifying lens.
The UV sensor can be mounted from the programmer/flame
switch up to a length of 300 m.
FEATURES
• Oscillating shutter interrupts ultraviolet radiation reaching
the UV Sensor 12 times per minute (when used with R7861
amplifier in combination with 7800 SERIES) to provide the
UV Sensor tube checking function. When used with the
R7061 amplifier in combination with R4348 flame switch,
the shutter frequency is 60 times per minute. Amplifier
circuitry components are checked from the
microprocessor in the 7800 SERIES Control.
• Detectors can be mounted horizontally, vertically or at any
angle in between. The self-checking C7061 models require
faceplate alignment and have integral locating reference
points to assure proper operation of the shutter
mechanism.
• Ultraviolet radiation sensing tube and quartz viewing
window are field replaceable.
• Two flame detectors can be wired in parallel to reduce
nuisance shutdowns in difficult flame sighting applications.
• A swivel mount is available to facilitate flame sighting.
• -40°C (-40°F) rated ultraviolet sensing tube is available.
• lncorporates UV Sensor tube checking feature; used with
R7061 and R7861 Dynamic Self-Check amplifiers.
• High pressure 50 psi (345 kPa) quartz viewing window,
magnifying lens and antivibration mount are available as
accessories.
• Housing meets IP67 enclosure standards.
• C7061 F only: explosion-proof housing, meets EExd IIC
T6 classification.
• Protective heat block built into mounting flange.
