- 26 -
Installation
and
Operation
Offset Setup Loop
(Digital Plus Only)
Offset
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Yes
Yes
No
No
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Offset
Offset
NOTE:
Use this feature only when the bath is at a stable temperature.
Press the Offset button to display the current offset temperature value and
illuminate the LED.
To change the value press and hold the Offset button for five seconds to enter
the controller's Offset Setup Loop. The bath will alternately flash
oFSEt
with
the current temperature.
Use the arrow buttons to change the value. For example, if the bath is at
+40°C and the desired offset is +5°C, change the display to +45°C. Press the
Offset button once the desired offset is displayed. (If the Offset button is not
pressed the function will time-out and the change will not be saved.) The
display will show
StorE
. Press YES to accept the value, NO to abort it.
If, after pressing YES, the display returns to +40°C, not +45°C, the Offset
button was not depressed when you entered the Offset Setup Loop. Press the
Offset button to display the offset temperature and illuminate the LED.
NOTE:
Offset only changes the display of the enabled probe. Setpoint and
alarm values will display the non-offset value. Temperature control (rapid heat,
and rapid cool functions) will continue to use the non-offset value.
If you press the Offset button when an offset is 0 or not defined, or if serial
communications is enabled, the button will flash, the unit will beep three times,
and the display will momentarily show an error message (Er53 for offset
undefined, Er54 for serial comm on). In either case the function can not be
enabled.
With offset disabled, the unit controls to and displays the calibrated value for
the internal or external probe, whichever is selected.
With offset enabled, the unit still controls to the calibrated value,
not the offset
value
, for the internal or external probe. The display shows the calibrated value
with the offset value added.
In Computer mode if you send a signal to the bath to display internal or
external probe temperatures, the calibrated value is returned. If you send a
signal to change the display value the offset value is returned.
