OPTIONAL EQUIPMENT
Automatic Damper
System |
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The microprocessor
controller is the main controller of the system, responsible for time,
temperature and atmosphere of a kiln firing. It reads the temperature by
means of a
thermocouple mounted on the back wall protruding into the interior
of the kiln. The microprocessor then processes the pre-programmed
parameters (i.e.: ramp soak segments) and adjusts the output signal to
the proportioning valve located on the valve train. Depending on the
call for heat from the microprocessor, the proportioning valve will vary
the amount of gas reaching the burners. The kiln is also equipped with
an oxygen probe located just below the thermocouple. Reading the
atmosphere of the kiln via the oxygen probe, the microprocessor sends a
signal to the damper motor which then adjusts the damper automatically
to control the atmosphere.
By programming the
microprocessor’s parameters with time and temperature, the kiln can be
fired by ramping to a set point within a particular time frame. This
ramp time plus a soak time is one segment. The microprocessor contains
four ramp soak segments making up what is called a firing profile. This
profile is stored in the microprocessor’s nonvolatile memory. The
microprocessor contains two operating modes, AUTO and MANUAL. These
pre-programmed firing profiles can be operated by the AUTO mode. The
kiln can also be fired manually by the microprocessor controller.
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Our
auto-damper system is PC controlled using a windows based program that
is very easy to operate and hook up. All the parameters from the
controller are displayed on your computer screen, making it easier to
update and change your firing profiles. The program takes about 5
megabytes of space on your hard disk. There are no major upgrades needed
for you to install and connect the microprocessor program. The
microprocessor program offers remote station firing
capabilities.
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Automatic damper controls the kilns
atmosphere |
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The oxygen probe on the kiln sends atmosphere conditions to the control
panel, the microprocessor reads the signal and adjust the damper
automatically |
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The
proportional gas valve maintains just the right amount of gas to ramp or
soak the kiln at all times during the firing. |
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Microprocessors
on the kiln control both temperature (ramp/soak) and atmosphere |
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The microprocessor controller is equipped with a high
limit alarm. The high limit alarm will shut the kiln down once the kiln
hits the high limit temperature. The damper is automatically closed to
prevent any thermal shock. lf there is any disruption of gas or flame
failure, the flame safety system will automatically shut the kiln down.
Our auto-damper system is backed by a CSA (Canadian Standard
Association) certification meeting the required safety standards for gas
appliances. |
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A thermocouple is a temperature reading devise made up of two dissimilar
metals that when heated produce a thermoelectric current. The speed of
the current increases as the temperature increases. |