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Orton Sentry Xpress User Manual

Cone fire/ramp-hold version digital temperature controller
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Cone Fire/Ramp-Hold Version
Sentry Xpress
Digital Temperature Controller
SENTRY
START/STOP Key
Starts and stops a
firing.
each programming step. It
works like the Enter key on a
computer.
°F
Temperature Display
ture display is in °F.
°C
Temperature display is in °C.
See page 7 for instructions on
selecting °F and °C.
°C Display Dot
Hr./Min.
when lit
START/
HIGHER
STOP
Xpress
M I C R O P R O C E S S O R
The Sentry Xpress 2.0 micro processor is manufactured by the
Up Arrow Key
Press after
From
Press Up Arrow to select
Cone-Fire or Ramp-Hold.
a Ramp-Hold firing, skips to
the next segment. After
pressing Up Arrow,
will appear. To skip, press Up
Arrow again.
Tempera-
Program
Review
Run
°F
When Off
°C
When Lit
LOWER
TM
Orton Ceramic Foundation and displays the CE mark.
press START.
during
Time Display
: Separates
hours from minutes. Example:
Display shown above is 1 hour
and 2 minutes.
Indicator
Lights
programming.
program review.
ing firing.
Down Arrow Key
from
or during fir-
ing, press Down Arrow.
The program you have se-
lected will appear one
step at a time.
from
press Down
Arrow.
On during
On during
Blinks dur-
1

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Summary of Contents for Orton Sentry Xpress

  • Page 1 STOP SENTRY Xpress M I C R O P R O C E S S O R The Sentry Xpress 2.0 micro processor is manufactured by the Orton Ceramic Foundation and displays the CE mark. START/STOP Key Up Arrow Key...

  • Page 2: Table Of Contents

    Safety General Guidelines ....3 The warranty on your Sentry Xpress controller does not cover damage from Time and Temperature Display ....3 overfiring, regardless of the Operation Begins from the IdLE Display .

  • Page 3: General Guidelines

    General A Rapid Way to Scroll Numbers Guidelines During programming, hold an arrow key down several seconds, and numbers will begin to scroll rapidly. Ordi- narily, you would press to raise a number and Time and Temperature to lower it. But sometimes it is faster to press the opposite key.

  • Page 4: Power Failures

    Another example: glaze crazing due to under-fired bisque. Cone-Fire mode fires the ware to a pyrometric cone How to Interpret the Bending number using the Orton cone tables on page 15. This mode is for ceramics, pottery, stoneware, and glazes. Your sup- of a Pyrometric Cone plier can tell you which cone number to program.

  • Page 5: How To Correct For Under- Or Over-Fired Cones

    Hold time entered. For instance, if you fired to cone 05, make sure the cone in When Hold is set to 99.99 hours, the Sentry Xpress will the kiln was not a cone 5 instead. (See the cone temperature remain at that temperature indefinitely, until chart on page 15.)

  • Page 6: Cone-Fire Firing Instructions

    Suppose your 016 witness cone, at a medium speed fir- ing, only barely started to bend. To fire 25° hotter, raise the target temperature of segment 2 by 25°: 1422 + 25 = 1447 This is the program you would enter in Ramp-Hold: Rate Temp.

  • Page 7: Rate

    Repeat Firings To repeat the last firing, press from . The kiln will begin firing. But first, make sure you are repeating the correct firing by using Program Review (page 3). Programming a Cooling Segment For controlled cooling, program a segment to a lower target temperature than that of the preceding segment.

  • Page 8: Skipping A Segment In A Ramp-Hold Program

    PrOG Ramp-Hold Programming rA1 = 250 Instructions °F 1 = 750 HLd 1 = 00.00 Note: Up to 8 segments are available in rA2 = 900 Ramp-Hold. If you don’t need all 8, zero out the °F 2 = 1425 unused segments.

  • Page 9: Lost Wax Burnout

    Lost Wax Segment 3 lowers temperature to 800°F/426°C, the typi- cal casting temperature for silver. (Most types of gold cast at 900°F/482°C.) Burnout Note: Casting temperature depends on the size of the mold. The temperatures above are only a guide. See your jewelry supply dealer for temperature CAUTION: Only kilns with vent holes are designed recommendations.

  • Page 10: Error Messages

    Error Messages The power failed during firing and kiln temperature was BAdP / Bad Programming below 212°F/100°C when the power came back on. The kiln will not fire because the program just entered tC / Thermocouple Failure has a rate of 0000 in segment 1. Program the firing again. The thermocouple failed or was disconnected during the EtH / Electronics Too Hot display.

  • Page 11: Display Messages

    Display Trouble Shooter Messages Problem: Controller display is blank. No heat in kiln. The firing was stopped. Is the kiln connected to the power? (page 8) This is the prompt for Cone-Fire mode. Has the circuit breaker tripped or fuse blown? Press the key to select Cone-Fire.

  • Page 12: Problem: Controller Display Turns On. No Heat In Kiln

    Controller Power Input Test Result: less than 20 volts UNPLUG the kiln/disconnect the power. Remove Did you recently replace the transformer? It may be the the 4 screws holding the controller faceplate to the wrong voltage. The voltage is below 20, which is not enough switch box.

  • Page 13: Cone-Fire Schedules

    Cone-Fire Schedules - °F These are the Medium Speed firing schedules programmed in Cone-Fire mode. To customize a schedule, write down your changes on a separate sheet of paper. Then load your new schedule into Ramp-Hold. Note: Your controller accepts only cone numbers that fall within the kiln’s maximum temperature range. Low Fire Cones °F Segment 1 Segment 2...
  • Page 14 Cone-Fire Schedules - °C These are the Medium Speed firing schedules programmed in Cone-Fire mode. To customize a schedule, write down your changes on a separate sheet of paper. Then load your new schedule into Ramp-Hold. Note: Your controller accepts only cone numbers that fall within the kiln’s maximum temperature range. Low Fire Cones °C Segment 1 Segment 2...

  • Page 15: Pyrometric Cone Temperature Chart

    Temperature Equivalents For Orton Self-Supporting Pyrometric Cones °F °C Cone Self-Supporting Cones Pre-Fire Cone Self-Supporting Cones Pre-Fire Num-ber Color Number Color Heated at: 27° F 108° F 270° F Heated at: 15° C 60° C 150° C Per Hour* Per Hour* Per Hour* Per Hour* Per Hour* Per Hour* —...

  • Page 16: Shorthand Instructions

    Shorthand Instructions These instructions may be confusing until you have read more detailed instructions on Cone-Fire, page 6, or Ramp-Hold, page 8. Read the safety guidelines, page 2. After pressing the keys in the left column, the message in the center will appear. Cone-Fire Keys to Press Display...

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