RADLEY Mya 4 - Creating a Ramped Profile Step

Mya 4 Reaction Station – Instructions
Issue 8 Page: 143
9.1.2 Creating a ramped profile step
When heating/cooling as fast as possible, overshoots are to be expected. So if temperature control
to minimise overshoots is critical, creating a ramped profile step for each step is the recommended
method. Generally, the longer the ramp time, the lower the overshoot will be.
• To create a ramped profile step, enter the current temperature in the From temperature box,
and the required final temperature in the To temperature box.
• In this case, the temperature will rise slowly, according to the calculated linear profile from start
temperature to end temperature over the time period selected. This gives an additional level of
control on top of the Temperature Control option, and is likely to produce much better results for
critical applications where minimal initial overshoot is necessary.
Example of creating a ramped profile step to minimise temperature overshoots
In the example below, a ramped profile step has been created with a start reaction temperature (Tr)
of 20 °C to an end temperature of 80 °C, with a duration of 30 minutes, and the End Condition set as
Value.
In this case, the system will heat to 80 °C in a calculated linear profile determined by the set duration
(in this case 30 minutes). After 30 minutes, if the set reaction temperature (Tr) of 80 °C has been
reached, the step will end. If the reaction temperature has not reached 80 °C, the step will continue
until it does, and then end.