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4. OPERATION PROCEDURE
Calibration Offset Function
The calibration offset feature makes it possible to compensate for any difference between
temperature reading on the control panel and actual chamber temperature (taken manually). This
enables parallel compensation in either direction (+ or -) over the entire temperature setting
range on all DF/DH series units.
Example
Actual chamber temperature is lower than control panel temperature reading by 2°C:
Temperature reading can be calibrated by entering a calibration offset value of -2.0 to compensate
against the actual temperature deficiency of 2°C.
If the initial temperature reading was 200°C, it will read 198°C after offset calibration, and be brought
into agreement with actual chamber temperature.
The -2°C calibration in the example above is applied over the entire temperature setting
range (DF412/612: 0～260°C, DH412/612: 0～360°C). Note that offset values may change
slightly depending on sample/specimen arrangement in the chamber and/or
temperature setting.
Turn control panel off (idle)
Turn main power switch ON (｜). Lower display shows
current time.
If unit is in standby, press and hold to turn control
panel power off (idle).
shows in lower display while
flashes in upper display.
2) Using and , enter password “ ”
into upper display and press (password is
set at “11” and cannot be modified).
Set Calibration Offset value.
1) Press . is shown in lower display
and in upper display. Press .
Right-most digit flashes.
2) Enter offset value using , and
press .
Example
Temperature reading: 200°C, actual chamber
temperature (manually taken): 198°C
Offset input value: -2.0°C
Press and hold to return to initial idle screen.
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