Description: UV PURPLE PEEPER,SELF CHECKING
Category: Combustion Controls
Sub Category: Sensors
C7012E Solid State Purple Peeper®
Ultraviolet Flame Detectors
FEATURES
All models
• Solid-state electronic circuitry provides low power
consumption and high reliability.
• Solid-state models directly replace previous models
with vacuum electron tube circuitry.
• Detectors can be mounted horizontally, vertically or
at any angle. The self-checking C7012E,F models
require faceplate alignment and have integral locating
reference points to assure proper shutter mechanism
operation.
• Ultraviolet radiation sensing tube and quartz viewing
window are field replaceable.
• Threaded conduit fitting and color-coded leadwires
allow rapid electrical installation.
• 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.
Basic Requirements
The combustion flames of most carbon-based fuels emit
sufficient ultraviolet radiation to enable the C7012 Solid State
Purple Peeper® Ultraviolet Flame Detector to prove the
presence of a flame in a combustion chamber. The detector is
mounted outside the combustion chamber. Its mounting flange
or union is threaded to one end of a sight pipe inserted through
the wall of the combustion chamber. The ultraviolet sensing
tube in the flame detector sights the flame through the pipe.
When a flame is present, the UV tube in the C7012 senses the
ultraviolet radiation emitted. The C7012 produces a signal that
is sent to the amplifier in the flame safeguard control. The
amplified signal pulls the flame relay into the control to allow
proper operation of the system.
Because it is necessary for the UV sensing tube to actually see
the flame, it is best to locate the detector as close to the flame
as physical arrangement, temperature, and other restrictions
permit.
Replaces Part Numbers: C7012E1120, CARC7012E1120