Yamato Scientific DN410H Constant Temperature Ovens User Manual

Page 73

Setting The Calibration Offset Function

This function can be activated when the controller is in the condition of accepting the MODE key.

EX. Bring the oven to the target set temperature 100°C and allow it to reach the steady state. After

then, measure the temperature at a point in the chamber. If it shows 97°C when the main display
shows 100°C, you can conform your measuring value to the one on the display by using the
calibration offset function.

Calibration offset

ΔD

CAL

is obtained from the Equation 1 (page22) as shown below.

△D

CAL

＝97℃－100℃＝－3℃

Procedures to set the calibration offset

ΔD

CAL

to the controller are shown as below.

Setting and changing the calibration offset value

• Push the MODE key, and then push the key or the key several times to display

on the

main display.

Push the key or the key several times

• The sub display shows the calibration offset value that has been set the last time.

NOTE: When the unit is shipped from the factory, the sub-display shows 0 as the

calibration offset value.

Push the ENTER key.

• The main display flashes the preset calibration offset value.
⇒ In this state, the set value of the calibration offset can be changed.

• The sub display shows

Push the key or the key several times

• Push either the key or the key to change the value on the main display to your desired value

(calibration offset value to be set newly).

When the changing is completed, push the

ENTER key.

• The changed value is entered and both the main and the sub displays return to the display mode just

before pushing MODE key. The controller starts the temperature controlling operation in order to
make the difference zero, since the difference is generated between the target set temperature and
the temperature in the chamber by the changing of the calibration offset value.

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