15
ALARM TEMPERATURE SETTING
This unit is provided with both high and low temperature alarms. The temperature at which the alarm is
activated may be changed.
The available set range for high temperature alarm is b5
o
C and +15
o
C, and -5
o
C and -15
o
C for
low temperature alarm against the chamber temperature.
Note:
The temperature alarm is set at
±
10
o
C of the set temperature at the factory.
Display Mode
Set
range
F01
High temperature alarm set
between 5
o
C and 15
o
C higher than the chamber set temperature
F02
Low temperature alarm set
between 5
o
C and 15
o
C lower than the chamber set temperature
As an example, Table 3 shows the procedure to set the high temperature alarm so that the alarm can
activate when the chamber temperature is 5
o
C higher than the set temperature.
Table 4 shows the procedure to set the low temperature alarm so that the alarm can activate when the
chamber temperature is 5
o
C lower than the set temperature.
Table 3. Procedure for setting high temperature alarm (change from 10
o
C to 5
o
C)
Description of operation
Key operated
Indication after operation
1
----
The current chamber temperature is
displayed.
2
Press numerical value shift key for
about 5 seconds.
F00 is displayed and the first digit is
flashed.
3
Press numerical value shift key and
scroll the figure to 1.
When pressed, the figure of settable
digit changes.
4 Press set key.
SET
The current setting is displayed and
the first digit is flashed.
5
Scroll the figure to 005 by using
digit shift key and numerical value
shift key.
When pressed, the changeable digit
is shifted.
When pressed, the figure of settable
digit changes.
6 Press set key.
SET
Alarm temperature is memorized and
the current chamber temperature is
displayed.
Table 4. Procedure for setting low temperature alarm (change from -10
o
C to -5
o
C)
Description of operation
Key operated
Indication after operation
1
----
The current chamber temperature is
displayed.
2
Press numerical value shift key for
about 5 seconds.
F00 is displayed and the first digit is
flashed.
3
Press numerical value shift key and
scroll the figure to 2.
When pressed, the figure of settable
digit changes.
4 Press set key.
SET
The current setting is displayed and
the first digit is flashed.
5
Scroll the figure to -05 by using
digit shift key and numerical value
shift key.
When pressed, the changeable digit
is shifted.
When pressed, the figure of settable
digit changes.
6 Press set key.
SET
Alarm temperature is memorized and
the current chamber temperature is
displayed.
The set mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing set key (SET) is not memorized.
