Handbook
November 2011 / 59-UMC0071 / Issue 01
Mercury iTC
Page 88
BASIC OPERATING INSTRUCTIONS
Original Instructions
A program can contain up to 32 ramps and 32 steps. Each ramp and step lasts for a
programmable time period. Once a sweep has been programmed, it can be repeated as
often as desired. It is also be retained in non-volatile memory when the iTC is switched
off.
The Auto-PID facility may be used in conjunction with the sweep function to provide
optimum control over a wide temperature range. To avoid discontinuities during a
sweep, it is recommended that the start and end temperatures for the sweep ramps
should coincide with the Auto-PID segments.
6.3.2 Programming a sweep
1 Tap Control on the Home page. The Control Loop Configuration page is displayed.
2 Select the required temperature-sensor in the Sensor field.
3 Tap Sweep. The Sweep Table page opens.
4 Tap + to add a row to the table.
5 Enter the temperature (in K) for the first step in the Final T(K) field in row 1 of the
Sweep Sequence Editor.
6 Enter the time for the first ramp (in minutes) in the Time To Final T(mins) field in
row 1 of the Sweep Sequence Editor.
7 Enter the time to hold the step temperature (in minutes) in the
Hold At Final T(mins) field in row 1 of the Sweep Sequence Editor.
8 Tap + to add an additional row to the table.
9 When the complete sequence is programmed, tap Save to save the programmed
sweep as a file.
10 Tap Close to return to the Control Loop Configuration page.
11 Tap Home to return to the Home page.
6.3.3 Loading a sweep
1 Tap Control on the Home page. The Control Loop Configuration page is displayed.
2 Select the required temperature-sensor in the Sensor field.
3 Tap Sweep. The Sweep Table page opens.
4 Tap Load and select the filename of the sweep to be loaded (see Section 3.2.17).
6.3.4 Starting a sweep
1 Tap Control on the Home page. The Control Loop Configuration page is displayed.
2 Select the required temperature-sensor in the Sensor field.
3 Tap the Set (K) button until it displays Auto. The Set (K) field value will change as
the sweep proceeds.
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