Sentry Sentry 2.0 Betriebsanleitung PDF herunterladen (Seite 8)

Note: In Program Review, a heating rate of 9999 is

displayed as . When a kiln is heated at full

power, it may overshoot the target temperature, espe

cially in the lower range. To avoid this, add an extra

segment with a slower rate for the last 50 degrees of

temperature rise.

CAUTION: The Sentry includes error messages to

warn you when the kiln is at the wrong temperature.

Firing the kiln at full rate turns off some of these warn-

ings. See TEdE Temperature Deviation, page 17, and

HTdE High Temperature Deviation, page 20.

If you are not sure how fast to fire, remember an old fir-

ing adage: When in doubt, slow it down.

Note: At the time that you purchase the controller, the

factory can set up your controller to calculate rate in

oneof three ways: 1) degrees of temperature change per

hour 2) degrees of temperature change per minute, or

3) elapsed time needed to reach a temperature. The

normal setting is degrees per hour. If you are having

problems entering rate, check the RATE option to be

sure your controller is set for degrees perhour, page 16.

(This note applies only to 18D and later software ver

sions. All pre-18D controllers figure rate only as de

grees per hour. See page 18, SOFT option, to look up

software version.)

Hold

Hold is the length of time that you want the kiln to re

main at the target temperature. Hold is also called soak or

dwell time. Hold gives the temperature time to become

more even throughout the kiln. Hold can be used in either

heating-up or cooling-down segments.

In programming step 5 (see next column), enter hold

time. When hold is set to 99.99 hours, the Sentry will re

main at that temperature indefinitely until you press

When the Sentry is in hold during a firing, the display

will alternate between time left in hold and the tempera

ture.

8 Ramp-Hold

Programming Steps

Use these instructions for your first firings. Later

you may prefer “Ramp-Hold Shorthand Instruc

tions,” back cover.

As you follow these steps, you will see values (tem

peratures, rates, etc.) from the last firing. To use

these again, press

. To program a controlled

cooling, set the segment to a lower target tempera

ture than that of the preceding segment.

To fire without Alarm or Delay: Follow steps 1

through 7. Then press

once.

Apply power to the kiln. then

will appear. (Press if does not

appear.)

Press . will appear. Enter a program

number from 1 to 9.

Press . will appear. Enter firing

rate for segment 1 (temperature change per

hour: from 1° to 9999°).

Press . (or ) will appear. En

ter the target temperature of segment 1.

Press . will appear. Enter seg-

ment 1 hold time in hours / minutes (e.g. 12

hours, 30 minutes=12.30). Nohold=00.00.

Press .If appears, and you have

an AOP receptacle on your kiln, use the 1 or

2 key to select ON or OFF. Press

(For more details on AOP, see page 16.)

Continue entering values for the segments

needed. When appears for the first

segment you don’t need, press

,then

. will appear. The kiln is ready

to fire.

press . will appear.

Enter alarm temperature. (Enter

to turn

alarm off.) Then press . will ap

pear.

press . will appear. En

ter delay time (i.e. 12 hours, 30 minutes =

12.30). Then press . will ap

pear.(Delayzeroes out after each completed

firing.)

From press

once. will appear, then kiln tempera

ture. If a delay was programmed, will

appear, then time remaining until start. To

stop the firing at any time, press

We recommend using Program Review (page 9)

before firing. When program fires to completion,

will appear. Press . will appear.

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