IKA C 5000 control Package 2/12 - Manual (Page 62)

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IKA  -WERKE C 5000 control/duo-control Ver. 10 04.07
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Make certain that the desired operating mode (isoperibolic, adiabatic, or dynamic) is
set (see Section 8.8 “Configuring the system”). Open the 6DPSOH dialog window to
enter parameters. If a sample rack is active, parameter input is opened automati-
cally by setting or removing a crucible (see also C 5020 Operating Instructions).
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Enter the weight of the combustion sample in the :HLJKHG LQ TXDQWLW\ box. If an
electronic scale is connected to the calorimeter system, the weight can be accepted
automatically. Depending on the type of scale, the 6DPSOH dialog window can be
opened either through the sample key of the calorimeter or through the 3ULQWWUDQVIHU
NH\ of the scale. The space bar can be used to accept the scale value again.
You can move the cursor to the following entry boxes with the 7DE key. The mean-
ings of the other entry boxes are as follows:
4([WUDQ Correction for the thermal energy from the cotton thread used as
an ignition aid. A preset value of 50 J/0 J (without/with combustible
crucible) appears here. If you use a different ignition aid instead of
the IKA  cotton thread, change this value as appropriate.
4([WUDQ Correction for the thermal energy from an additional combustion
aid. The preset value is 0.
If the weight of the combustion aid is transferred in :LWK FRPEXV
WLRQ DLG mode from electronic scale, the resulting extraneous en-
ergy calculated from the weight appears in the 4([WUDQ box.
Even without a scale, the gross calorific value of the combustion
aid can be taken into consideration automatically. In this case, you
should enter the weighed in quantity of the combustion aid in the
4([WUDQ box and then press the p arrow. 4([WUDQ is calculated
according to the formula
4([WUDQ = Weighed in quantity of combustion aid x
calorific value of combustion aid
and is entered in the 4([WUDQ box. If a value > 10 J is entered, it
is assumed that the value already represents all extraneous en-
ergy 4([WUDQ In this case, there is no further conversion based
on the formula given above.