Skip Segment; Editing The Current Segment During Firing; Multiple-Zone Kilns; An Overview Of Multiple-Zone Firing - Orton Sentry 2.0 Operating Instructions Manual

Skip Segment

Skip Segment works only during fir-
ing. It jumps the firing from the current
segment to the next one.
Note: Skip Segment does not skip from a ramp to a
hold. It skips to the next segment.
To skip a segment, press .
current segment. Press
and don't want to skip that segment, don't press
ter appears. Instead, press
continue in the same segment.)
Skip Segment skips to the ramp of the next segment
from either a ramp or hold of the current segment.
Skip Segment Example
For more examples, see Chapter 3.
grammed 1425°F for glass fusing, followed by a segment
for controlled cooling. Watching the glass through the
peephole, you notice that the glass edges have rounded
nicely at 1315°. Use Skip Segment to end the firing seg-
ment and begin the one for slow cooling.
Note: Make a note of the temperature at which the
glass fused. Program that temperature for the next fir-
ing of that type of glass.
Editing the Current
Segment
During Firing
While the kiln is firing, you can change
the target temperature and hold time of the current seg-
ment. (You can edit only the segment that is firing. To edit
other segments, wait until the firing has progressed to
those segments.)
Even if the current segment has already started its hold
time, you can still edit the segment's target temperature.
You can raise or lower the target temperature. The con-
troller will go back out of hold and fire to the new target
temperature at the original rate. (You cannot edit the rate,
however.)
During firing, press .
The display will show the target temperature of the
current segment. Use the number keys to change the
temperature. Then press
The display will then show the hold time (or 00.00 if
there is no hold time) of the current segment.
Change the time, if needed, and press
kiln will resume firing.
will appear, then the
. (If you change your mind
again. The firing will
You have pro-
.
. The
Chapter 5
Multiple-Zone
Kilns
An Overview of Multiple-
af-
Zone Firing
Look into the
firing chamber.
The number of
thermocouple
tips indicates the
number of zones.
With two- and three-zone kilns, the Sentry measures
temperature from each individual zone. It then adjusts the
heat separately for each zone to improve temperature uni-
formity.
To maintain even temperature, the Sentry calculates
not only temperature difference between zones, but also
length of time needed to change temperature. By carefully
timing heat output, it maintains even temperature with a
minimal loss in firing speed.
Note: Multiple-zone kilns use the same programming
instructions as single-zone kilns.
Note: Firing a Ramp-Hold program at FULL rate
(9999) shuts off multiple-zone control for that firing.
The kiln then fires as a single-zone kiln.
Thermocouple Failure
In a Multiple-Zone Kiln
In a multiple-zone kiln, if a thermocouple fails, the fir-
ing will continue as a single-zone kiln so long as one ther-
mocouple still operates.
with the thermocouple that failed. (See page 19 for multi-
ple-zone thermocouple error messages.)

Power Output Lights

The three lights on the right of the temperature display
turn on when the controller sends a signal to the relays.
the relays, all three lights appear.
the top section of the kiln, the middle light power to the
If you are not sure how
many zones your kiln has,
look into the firing cham-
ber. The number of thermo-
couple tips indicates the
number of zones.
In single-zone kilns, the
Sentry measures tempera-
ture from one location.
When the controller turns
on the heat, all the elements
turn on.
will appear, alternating
When the Sentry sends a signal to
The top light indicates power to
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