Metrohm 873 Biodiesel Rancimat Manual - Manual (Page 121)

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3 Set second tangent
￭ Keep the [Shift] key and left mouse button pressed down to
set the second tangent.
4 Adjust the position of the tangents
￭ Position the cursor on a black square on the tangent.
The cursor assumes the form of a cross hair.
￭ Keep the [Ctrl] key and the left mouse button pressed down
to move the point to the required position.
After you have adjusted the position of both tangents, you can read
the value of the new induction time both in the dialog window Live
graph at the top right beside the red line and also in the dialog window
Reevaluation under Manual.
5 Save changes
￭ In the dialog window Live graph click on the button [Save].
The new induction time is accepted in the determination overview.
Deleting manually set tangents
Proceed as follows to delete the previously set tangents:
1 Delete tangents
￭ Click on the symbol .
Resetting all reevaluations
1 Reset induction and stability time to the original value
￭ Click on the [Reset] button.
4.7.4 Extrapolation
Extrapolation can be used to extrapolate the results measured at various
temperatures to the required target temperature. In addition, the factor for
converting the induction time to the standard time can be determined.
A detailed description of the parameters can be found at "Parameter
description", page 116.