Despatch Protocol Plus Controller (Heat Only) - Manual (Page 39)

Protocol Plus Owner’s Manual O PERATION
Version 2 39
Copyright © 2010 by Despatch Industries.
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certain conditions where the center of the oven chamber is not the same temperature as
the control thermocouple. This temperature differential may occur when the oven is not
allowed to soak at a constant temperature for long periods of time, or when the oven is
being used at high temperature. Table 11 shows the menu items available.
5.6.10.3. Access Zone Calibration Page
1. Enter Setup Mode.
2. Press
Page until Zone Cal displays.
3. Press Menu .
4. Change each parameter by pressing Menu until the desired parameter is displayed,
and then press
▲ or ▼ to change the value.
5. Press Page to exit the Zone Calibration Page.
O
Use Factory Calibration only when no calibration instrument is
available. Push
▲ to restore factory values.
Table 11. Zone Calibration Page Parameters and Values.
Menu Item
Display Description Range
Zone 1
actual Zone Cal
Zone1Act Point at which Zone 1 is set
(center of chamber) -73°C to 760°C (-100°F to
1400°F)
Zone1
displayed Zone Cal
Zone1Dis Desired displayed value for Zone
1 setting -73°C to 760°C (-100°F to
1400°F)
Zone 2
actual Zone Cal
Zone2Act Point at which Zone 2 is set
(center of chamber) -73°C to 760°C (-100°F to
1400°F)
Zone2
displayed Zone Cal
Zone2Dis Desired displayed value for Zone
2 setting -73°C to 760°C (-100°F to
1400°F)
Factory
calibration
15
Zone Cal
FactCal Restores the factory calibration
values Ready or Done (push-key)
5.6.10.4. Access Factory Calibration Recovery
Factory Calibration Recovery restores the original factory calibration values. This may be
helpful if the calibration has been lost and a calibration instrument is not readily
available. To use the Factory Calibration Recovery feature only, bypass the Zone 1 and
Zone 2 calibration parameters by pressing
Menu .
15 Use only when no calibration instrument is available, push
▲ to restore factory values.