16
Standard
The Standard Control is a fast and simple reaction method. The user programs
A temperature control point and
A run time (time held at the specified temperature).
All other method parameters are controlled by the instrument defaults. All method parameters can be edited with the
Discover hotkeys.
1. With the main menu displayed, press the DISCOVER key.
2. Using the ARROWS and “+/-” keys highlight “Standard.”
3. Press the ENTER key.
4. Press the temperature hotkey on the Discover keypad to modify the method.
5. Use the “+/-” keys to increase or decrease the temperature to the desired parameter. (0 - 220°C)
6. Press the right ARROW key to highlight “Time”.
7. Use the ARROW keys to select the hours, minutes, and/or seconds of time to edit. Use the “+/-” keys to increase
or decrease the selected time parameter. (1 second to 99 hours, 59 minutes and 59 seconds).
8. Once the time is entered properly, press the ENTER key to accept all method parameters.
Dynamic
The Dynamic Control option provides more flexibility in how the user programs a reaction method. It applies to a
specified amount of power, defined by the user, to reach the control point. It modulates this set power automatically,
based on the sensor feedback data, to ensure the control point is reached rapidly, but with limited error (temperature or
pressure “overshooting”). The user programs:
the maximum amount of microwave power that can be applied to the method,
a temperature control point,
a pressure control point,
a hold time (the time the system maintains the control parameters),
a stirring function with speed control and a pre-stir option, and
PowerMAX
(simultaneous
cooling).
The ActiVent feature can be implemented in Dynamic Control. If the reaction generates a gaseous byproduct or an
extreme amount of pressure during the reaction, the ActiVent will vent at a specific setpoint for a pre-determined number
of times.
The “Delta Pressure” is the assigned amount of pressure to drop from the pressure set point. A delta of
50 PSI (1.7 BAR) is recommended.
The “PressureSP” is the pressure set point at which the venting will begin. If the gaseous byproduct that
is generate is the only pressure in the reaction vial (the reaction temperature does NOT exceed the
boiling point of the solvent), the ActiVent pressure release can be set below the control point. If a gas is
generated, but some of the pressure is due to vapor pressure, the release point for the ActiVent
must be set at or above the pressure control point.
