Bake Flow Rate (ml/min) – This is the flow rate of the pressurization gas during the
bake cycle. The bake flow rate can be programmed from 0 to 500ml/min in 1ml/min
increments.
NOTE: It is suggested to have a minimum a flow rate of at least 10ml/min
passing through the trap when the trap temperature is above ambient. This will
prevent damage to the trap material.
Programmable Bake Flow Control - <click> the Program button to enable this feature.
The screen as shown in Figure 3m will appear. <Check > the Enable Ramp Control
box to program the desired settings.
Initial Flow (ml/min) – This the beginning bake flow rate programmed in
ml/min. The initial flow can be programmed from 0 to 500ml/min in 1ml/min
increments.
Initial Hold Time (min) – This is the time in minutes the initial flow is
maintained. The initial hold time can be programmed from 0.0 to 999.9 minutes.
Ramp Rate ((ml/min)/min) – This is the rate programmed in ml/min the bake
flow will increase after the initial hold time has expired to the desired final flow
set point. The ramp rate can be programmed from 1 ml/min per minute to 500
ml/min 1 ml/min increments.
Final Flow (ml/min) – This is the ending bake flow rate programmed in ml/min.
The final flow can be programmed from 0 to 500ml/min in 1ml/min increments.
Final Hold Time (min) – The final hold time is not a value to be entered by the
User. The final hold time is the calculated difference of the final bake time taken
from the sum of the initial time and the ramping time needed to achieve the final
flow rate.
For Example: Total Bake Time = 10 minutes
Initial Flow = 40ml/min
Initial Hold Time = 2 minutes
Ramp Rate = 40ml/min per minute
Final Flow = 240ml/min
Final Hold time = 3 minutes.
Explanation: Since it takes 5 minutes to ramp from 40ml/min to
240ml/min at a rate of 40ml/min per minute. The final hold time is
calculated to be 3 minutes.
10 minutes – (2 minutes + 5 minutes) = 3 minutes
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