Setting Alarm From Idle

1 From IdLE , press 7. ALAR will appear alternating with the last alarm temperature entered.

2 Enter alarm temperature. Press ENTER. IdLE will appear. (Enter 0000 to turn alarm off.)

Note: 9999, as an alarm temperature, automati- cally changes to the maximum temperature rating of your controller.

When the alarm sounds, shut it off by pressing any key ex- cept STOP. (The STOP key does not work while an alarm sounds.) If the alarm sounds as soon as firing begins, it is be- cause the alarm was set to a temperature below the current temperature.

Setting Alarm During Firing

1The alarm beeps while the kiln is firing. Press 7.

2Enter the new temperature.

3Press ENTER. The kiln will continue firing.

If you touch 7, enter a new temperature, and forget to press ENTER, the controller will merely continue firing.

Note: When an alarm sounds, firing to completion does not shut the alarm off.

9 / Cone Numbers

& Skip Segment

Cone Table

Look up a cone temperature with the 9 key.

1 From IdLE , press 9. CONE will appear, then the cone, if any, currently programmed in Cone-Fire.

2Enter a pyrometric cone number. Press ENTER. The display will show the cone temperature. If you enter a non-existent cone number, the display will show CONE , ready for you to enter a different cone num- ber.

Note: Do not be concerned if the actual cone shut-off temperature does not match the Cone Ta- ble. The temperature of a cone varies with firing speed. The cone temperatures in Cone Table are for self-supporting cones fired at a rate of 108°F / 60°C per hour during the last hour of firing.

Skip Segment

Skip Segment works only during firing. It jumps from the current segment to the next one.

To skip a segment, press 9. SKIP will appear, then the current segment. Press ENTER. (If you change your mind and don’t want to skip that segment, don’t press ENTERafter SKIP appears. Instead, press 9 again. The firing will con- tinue in the same segment.)

Skip Segment in Cone-Fire

In Cone-Fire, Skip Segment works in Pre-Heat and Hold:

■To skip out of Pre-Heat and begin the cone firing.

■To skip out of Cone-Fire Hold. Slow Cooling will begin. (If the firing does not include Slow Cooling, Skip Seg- ment will not end a Hold. Press STOPto end the firing.)

Skip Segment in Ramp-Hold

In Ramp-Hold, the firing will skip to the ramp of the next segment from either a ramp or hold of the current segment. (See page 12 for details on ramps, holds, and segments.)

Skip Segment Examples

For additional examples, see Chapter 4, pages 14 - 15.

Cone-Fire

■In Cone-Fire you are firing to an 05 witness cone for the first time. You select cone 04 with a 60 minute hold and a slow cooling. After 30 minutes in hold, the 05 witness cone bends to maturity. Use Skip Segment to end the hold and begin Slow Cooling.

Note: Once you know how much hold time will bend the witness cone, program that much hold for the next firing.

Ramp-Hold

■Skipping to a Cooling Segment: You have programmed 2167°F for a cone 5 glaze firing, followed by a segment for controlled cooling. Watching the witness cone through the peephole, you notice that cone 5 is bending at 2150°F. Use Skip Segment to end the firing segment and begin the one for slow cooling.

Note: Make a note of the temperature at which the cone bent. Program that temperature for the next firing.

■Skipping to a Hold: Skip Segment does not skip from a ramp to a hold. It skips to the next segment. If you need to skip to a hold, program an additional segment with the hold that you want. Then skip to that segment. Example:

Segment 1: rate 500°F to 1828

Segment 2: rate 200°F to 1750 with 30 minute hold

Enter/Start

■ Press ENTERafter each step in program- ming a firing.

■Press ENTER once to begin firing.

The Options Key

See Chapter 6, page 17.

The Stop/Back Key

You can stop a firing at any time (except when the alarm sounds) by pressing STOP.

If you inadvertently enter Ramp-Hold, Cone-Fire, or Options, you do not have to go through all the prompts to get back out. Press STOP to go to IdLE .

The STOP/BACK key is also like the Back button on an Internet browser. It works in Cone-Fire and Ramp-Hold programming. It will take you back one step every time you press the key.

7

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Sentry Industries Sentry 2.0 operating instructions Cone Numbers Skip Segment, Enter/Start, Options Key, Stop/Back Key
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Sentry 2.0 specifications

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