-26-
Mark Press
Time
Pressure
■
Control mode select screen
■
Control mode select screen
00:01:27
Leak
Menu
Run
Stop
Power
Hold
AUTO
Run
00:01:27
Display
186
hPa
Mark Press
hPa
----
Leak
Menu
Run
Stop
Power
Leak
Menu
Run
Stop
Power
Hold
AUTO
Run
00:07:53
Display
120
hPa
Mark Press
hPa
----
Leak
Menu
Run
Stop
Power
120
5-4 Operation of the AUTO (Automatic
Control) mode
The AUTO (Automatic Control) mode automatically controls
pressure to prevent sudden boiling, automatically determines a
pressure that enable an optimal collection rate and a
condensation time at the same time (Mark Press) for the fixed-
value operation.
There are two modes: AUTO mode that detects pressure
changes and controls the pressure and AUTO-2 mode that uses
a vapor temperature sensor (optional) in addition to pressure
changes.
(1) [Hold] function
You can stop decompression to avoid bubbling or sudden
boiling.
If you press the [Hold] key during decompression or slope
control, the pressure at the time you pressed the key will
be maintained.
Press the [Hold] key again to release.
(2) Adjusting of the automatically determined pressure (Mark
Press)
You can adjust the automatically determined pressure
(Mark Press).
Press the dial key to start adjusting after a pressure has
been determined automatically, then turn the dial key to
change the value to the pressure you want and press to
determine.
* For the inverter pump, Mark Press will be adjusted
automatically as needed, note that automatic
adjustment will not be performed once you have
adjusted the setting using the dial key.
5-4-1
AUTO mode
In the AUTO mode, pressure is controlled automatically by
detecting pressure changes.
You can stop the unit automatically based on the operation
time by setting an operation stop condition (Auto Stop).
While the AUTO mode does not need any changes of settings
in principle, if you definitely need to change the control
status, the following functions and settings may be changed.
* The unit has been set to be an optimal state at the
cooling water temperature between 5 and 10
℃
and the
room temperature of 25
℃±
10
℃
at the conditions below:
Solvent with low boiling point: Bath temperature 40
℃
Solvent with high boiling point: Bath temperature 60
℃
* Sudden boiling might not be suppressed depending on
the sample.
In such a case, take following measures in consideration:
reducing samples, lowering the number of sample flasks,
or lowering the bath temperature.
* For the inverter pump, Mark Press will be adjusted
automatically once the fixed-value control has started.
(If you set the number of adjustment (Mark Count) to 2 or
larger in the AUTO-2 mode, the second session and the
sessions that follow do not perform automatic adjustment
of Mark Press.)
