Note 10. Acceleration heating function: dAST, dOUT
DSPR400 can accelerate heating speed of the initial heating phase by running
the heater at high power, then reduce the power once the temperature is getting
close to the boil. The heating acceleration is controlled by two parameters,
Distilling acceleration set temperature, dAST and Distilling acceleration
output power, dOUT. The dAST set the temperature limit that below this
temperature, the controller will output at a power determined by the dOUT. When
temperature rise to the dAST, the output will automatically reduce to the
evaporation of impurity. Since the heater power and liquid volume varies
between each application, we suggest the dAST to be set at least 10 degree
(Fahrenheit) below the boiling point for the first time use. As you getting familiar
with your system, you can change this setting to higher or lower. The dOUT is
the power used during initial heating phase. The unit is in percent of power. It
should be set to 100% unless you have a very powerful heater with very small
amount of liquid. The dOUT setting does not limit the power regulation range for
distilling phase. If you don’t need to use this feature, set dAST to 0, so this
controller will work as a manual mode controller over the entire
temperature range.
Note 11. Timer Function: dt, dtSP.
This timer function allows the controller to show the distilling time. It makes a
beeping sound when timed out and will display the process is ended. It can also
automatically shut off the controller’s power output after time out. The time
duration is set by dt parameter for distilling mode. The unit is hour: minutes.
When timer function is enabled, the timer counting will be started by timer start
temperature, dtSP. When temperature reaches timer start temperature, the
timer starts to count. After timer started counting, it will continue even if the
temperature drops below this start temperature. The timer can be reset to start
from beginning again. To reset the timer, press the knob momentarily, the display
will show rSton top and “n” at the bottom, rotate the dial clockwise will change
the bottom display to “y”. Press the dial again will reset the timer (Figure 4)
After the timer starts, the top display will be switched between the current
temperature and current time alternately in every 6 seconds. The temperature
and time display can be easily differentiated with their appearance. The
temperature reading has two or three digits. For example, 212 degrees will be
displayed as “212”. The timer display has four digits with flashing colon in the
middle. For example, “01:20” for 1 hour 20 minutes.
If you want to use the timer as a regular timer without correlating to the
temperature setting, you can set dtSP below the ambient temperature (or just
zero). The timer will start as soon as the regulator is powered up. You can use
the reset button (rSt) to reset the timer at any time.
Note 12. Alarm function for removing the foreshot/heads (for built-in
buzzer only): dALH
DSPR400 has a built-in buzzer that can be programmed to beep when
temperature reaches the alarm set temperature, AH. The alarm will generate
four short beeps every time the temperature rise from below AH to higher than
AH. The alarm function can be used to notify the operator to remove the
foreshots/heads at specific temperature close to the component boiling point.
The alarm function does not affect the heating or the time function, it only
provides the alarm sound.
Note 13. High temperature finish function, FF and dFSP.
This regulator can stop the distilling when the actual temperature is over the limit
temperature you set. The function is latched just like a limit controller. Once it is
the process is ended, it will not start again when temperature drops back, unless
the system is reset.
This feature is controlled by two parameters: High temperature finish function,
FF and finishing temperature set value, dFSP. (FF is in system configuration
menu, please check section 6.1.) If FF is set to ON, this feature is enabled. The
dFSP set the finish temperature limit. When the reading temperature is below
dFSP temperature, the controller will work as normal. When the temperature rise
