Thermo Scientific ARCTIC Serie Manual De Instrucciones página 106

Section 4 Operation
Edit - Ramp Program (AC 200 only)
Edit Ramp Program
Define your program as a series of setpoints with a known period of time interval between each. Each
interval is one step of the program. Pay careful attention to the first part of your program. What condi-
tions must exist at the beginning of your process? For example, at the starting setpoint you may need to
program an initial period of constant temperature to allow for thermal stabilization.
Note Consider the circulator's limitations when designing programs. Temperature or time parameters
which exceed the performance capabilities of the circulator will result in unsatisfactory operation. If
reaching the ramp setpoint temperatures is important, you will have to operate the bath between the
desired setpoints and note the duration before programming the ramp.
It is possible to create a program calling for very rapid changes in temperature. Although the circulator
may not be capable of producing such changes, it may be practical to program such steps as a way to
cause the fastest possible temperature change.
The ramp program has an
When enabled this feature pauses the ramp timer until the temperature reaches setpoint, ± variance.
This assures the temperature reaches setpoint before the ramp program continues to the next step.
Ramp Program
1. With
to display:
Edit Ramp
Edit Step
Menu
The ramp can have up to 30
Variance
The is used to set a temperature range, the program starts when the fluid temperature is
within this range. For example, if the desired
the program automatically starts when the bath temperature is between 20°C to 30°C.
Cycles
sets the number of times the entire ramp program is repeated after the last step is completed.
For example, selecting 3
End State
configures the circulator to either
the program is over.
4-12
is used to view/adjust the immersion circulator's program function.
Assured Soak
feature that can be enabled for each step independently.
highlighted press
Steps
.
Start Temp
Cycles
runs the entire ramp program a total of 3 times.
Shut Down

Edit Ramp
2. With
highlighted press
display:
No of Steps
Variance
Cycles
End State
Menu
Variance
is 25°C and the
or continue running (
to
xx
xxx.xx
xxx
Shut Down
is set to +5°C,
Maintain
) when
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