Yamato Scientific DG400 Drying Ovens for Laboratory Tools - Manual (Page 25)

23
4. Operating procedures
Useful functions (calibration offset function)
Using the calibration offset
function
Calibration offset function compensates any differences
between the target temperature in the bath and the control
temperature of the controller (sensor temperature.) The
function can compensate in parallel to either plus or minus
side for the whole temperature band of the unit.
The lock can be set or released with the SUBMENU keys.
The temperature is set at “0” on shipping from the
factory.
STOP
RUN
MEASURED TEMP.
℃
HEATER
RUN
SET TEMP.
TIMER
SUB MENU
① Start operation at the target set temperature and confirm
the temperature in the bath with a temperature recorder
after temperature has stabilized.
② Confirm the difference between the set temperature and
that in the bath.
③ Press the TIMER key (SUBMENU key) long to enter the
sub menu mode.
Press the TIMER key (SUBMENU key) several times to
select the characters cAL
that indicate the
calibration offset function.
④ Enter the difference between the set temperature and
the temperature in the bath using the ▼▲ keys and
press the TIMER key (SUB MENU key) long to exit the
sub menu mode. (When you want to set the key lock
function, proceed to character selection process for the
key lock function without pressing the TIMER key
(SUBMENU key) long.）
* You can set either of + or – side for the offset compensation temperature.
When compensation is set for the – side, the measured temperature display decreases by the
compensation temperature while the temperature in the bath increases by the same amount.
When compensation is set for the + side, the measured temperature display increases by the
compensation temperature while the temperature in the bath decreases by the same amount.
* Since too large a compensation value may result in larger difference between the actual and
indicated temperatures and may present a danger, consult our nearest sales office before
entering a large compensation value.
* The device has, in addition to the calibration offset function, the two-point compensation
function that adjusts offset for the lower temperature range and higher temperature range, for
which adjustment temperatures have been input on shipping from the factory.
* Consult the nearest sales office before attempting validation work for the temperature adjusting
device.
Current temp.
Control temp. after
minus side
compensation
Control temp. after
plus side
compensation
③
④