Thermo Scientific Sorvall ST Plus Series, Инструкция по эксплуатации

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3-9
Graphical User Interface
Run Time in Standard Mode
Tap in the Time entry field above and use the keypad shown to enter the desired run time period.
Run time is shown in “hh:mm:ss”. For example, if you want to enter 2 hours and 30 min you must first tap
“2” on the keypad. This will set the run time to “00:00:02”. Then tap “3” on the keypad. This will set the run
time to “00:00:23”. When tapping “000” next on the keypad the set run time shows “02:30:00”, which is 2
hours and 30 min.
Figure 3–19: Run Time Box on Home Screen
The admissible time range for the current rotor appears just below the “Time” label to assist you in setting
run time correctly.
When you tap the
Time entry field, the previous setting will be replaced immediately as you start entering
digits on the keypad.
Run Time in Advanced Mode
In “Advanced Mode” the Time entry field has an extra click-wheel and changes its appearance with the option
you select. You have three options to choose from:
» Timed: Sets the run time in hours, minutes, and seconds.
»
Continuous: Starts a no-limit run, stopped only by tapping the Stop button on the “Home” screen.
» ACE (Accumulated Centrifugal Effect): The ACE feature is an integrator function that calculates the
effect of speed in relation to time and adjusts run time to account for differences in acceleration.
ACE is a mathematical model that helps you to transfer applications and their parameter settings
between centrifuges. For example, when you transfer an application to a new centrifuge, ACE ensures
that the application runs in exactly the same way and yields the same results as on a legacy centrifuge.
2. Tap the Save button to save the run time setting for the ongoing or for the next centrifugation run.
3. 2. 3. Acceleration and Deceleration Profiles
The centrifuge offers a total of 9 acceleration profiles (numbered 1 through 9) and total of 10 deceleration profiles
or braking curves (numbered 0 through 9). An acceleration profile gradually increases the speed of the centrifuge
after starting the centrifugation run. A deceleration profile gradually reduces the speed of the centrifuge towards
the end of the centrifugation run.
NOTICE Avoid if possible speed ranges close to natural resonances of the sytem. Runs at resonance speeds
may have show vibration and an adverse effect on the quality of separation.
Proceed as follows to select an acceleration or deceleration profile:
1. Tap the Accel / Decel icon on the left in the “Acceleration / Deceleration Profile” box on the “Home” screen,
shown in Figure 3–20 below.
Figure 3–20: Acceleration / Deceleration Profile Box on Home Screen
The “Setpoints: Standard” screen shown in Figure 3–13 or “Setpoints: Advanced” screen shown in Figure
3–14 appears.
Acceleration: Curve number 1 provides the slowest and curve number 9 the fastest acceleration rate.
Deceleration: Curve number 0 disables active deceleration. Curve number 1 provides the slowest active and
curve number 9 the fastest active deceleration rate.
2. Tap in the Accel or Decel entry field, then use the keypad on the right to enter the number for the desired profile.
The admissible range of numbers appears just below the “Accel” or “Decel” label to assist you in choosing
the desired profile.
When you tap the
Accel or Decel entry field, the previous setting will be replaced immediately as you start
entering digits on the keypad.
3. Tap the Save button to save the acceleration and deceleration profile setting for the ongoing or for the next
centrifugation run.
4. Release the or button when the number of the desired acceleration and deceleration profile appears
in the display window.
Doing so selects the acceleration and deceleration profile for the next centrifugation run.