YSI CR 3200 Thermoreactor - Manual (Page 20)

Operation CR 3200
20 ba76120e01 08/2012
Note
The reaction temperature is reached when the temperature in the
thermoblock is in a range of ± 1 °C around the adjusted temperature
for two minutes constantly. The control lamps of the thermoblock will
then light up red.
Sequence with
automatic timer
If the start of the timer for the reaction time has been set to automatic
in the SETUP menu (START TIMER:AUTO see section 5.5.3), the
reaction time automatically starts after the reaction temperature has
been achieved. The reaction temperature is kept constant during the
reaction time.
After the reaction time has expired the control lamps flash red.
The temperature program is finished.
The thermoreactor is in the program selection mode.
As soon as the thermoblock has cooled down to under 50°C, the
control lamps switch themselves off.
Sequence with manual
timer
If the start of the timer for the reaction time has been set to manual in
the SETUP menu (START TIMER:MAN. see section 5.5.3), an S is
displayed in front of the nominal reaction time. With this setting the
thermoreactor controls the temperature until the timer for the reaction
time is started by pressing g.
The reaction temperature is kept constant during the reaction time.
The control lamps of the thermoblock will then light up red.
After the reaction time has expired the control lamps flash red.
Additionally, an acoustic signal sounds.
The temperature program is finished.
The acoustic signal is finished.
3 Start the displayed temperature program with g.
The control lamps for the thermoblock flash red.
The nominal reaction time (in hours and minutes) appears on
the display.
4 Start the timer for the reaction time with g. The S in front of
the reaction time disappears.
5 Using g confirm the end of the reaction time for each
thermoblock.