EZT-570S User Manual
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4.1.1
Entering Step Time
The length of time, loop set points and jump conditions for each step are entered by touching the
corresponding row for the desired entry in the list on the left side of the Program Entry screen. To
enter the time for the step, press the first row in the step data list view that contains the time entry.
Upon doing so, the numeric entry keypad will be shown.
The length of each step is entered as a period of time in hours, minutes and seconds. To make time
entry easy, the entry will automatically be formatted into time as the number keys are pressed. For
example, if a step is to be thirty seconds long, just enter a value of 30. If the time for the step is one
minute and thirty seconds, enter a value of 130 for 1 minute, 30 seconds. If the step time is one hour
and thirty minutes, enter a value of 13000 for 1 hour, 30 minutes and 00 seconds.
Figure 4-2 Step Time Entry
Since one hour and thirty minutes is also a time of 90 minutes, you can also enter a value of 9000 for
90 minutes, 00 seconds. Upon pressing the ‘Enter’ button, the time will be formatted and displayed in
the step data list view as 1:30:00.
A step
time of zero can be entered for a step to implement an immediate set point change.
This will cause the chamber to go to the set point as quickly as possible. When used in
conjunction with a “wait” condition on the following step, there is no need to know the time it
takes for the chamber to achieve set point.
The wait can be used to trigger the next step, typically a soak, so that the desired soak time
is achieved without having to determine what additional time may be needed in order to make
sure the chamber reaches set point before starting the soak time.
4.1.2
Entering Step Set Points
The length of time, loop set points and jump conditions for each step are entered by touching the
corresponding row for the desired entry in the list on the left side of the Program Entry screen. To
enter set points for each control loop, touch the loop in the step data list view and enter the desired
set point via the numeric keypad.
The loop set points are used as the target set points for the step, i.e., the set point that each control
loop will reach by the end of the step. Each set point will then change independently of the other set
points in order to arrive at the target set point when the time left in the step reaches zero. Thus,
based on the time entered and the difference in set point from the previous step, the step will either
be a ‘ramp’ step or a ‘soak’ step.
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