IKA C 5000 control Package 2/12 - Manual (Page 69)

IKA  -WERKE C 5000 control/duo-control Ver. 10 04.07
3DJH 
ce
Using the 7DE key and the 'RZQ DUURZ key, place the cursor on the next experiment
and activate 6HO . With this, you have selected the next experiment for calibration.
The average value of the selected experiments, the average, relative error as a per-
centage, as well as the scattering range (max-min) absolutely and as a percentage
are displayed in the corresponding boxes.
$YHUDJH Calculated average value
05) > @ Average, relative error
0D[PLQ Scattering range
'LII The scattering range by percentage in reference to the
average value
cf
Repeat step 13 for all values that are to be selected. $YHUDJH then displays the av-
erage C value of these experiments.
cg
The following criteria apply to evaluating successful calibrations:
05) > @ Average, relative error, < 0.2 % according to ISO 1928
'LII > @ Scattering range by percentage, < 0.4 % according to
DIN 51900
Depending on the standard used, other criteria may be of consequence. Normal
requirements for accuracy of the calorimeter are however fulfilled with the values
given above.
ch
Using 7DE , place the cursor on the button > Æ @ and confirm with 2. or press  . This
causes the average value from the selected calibration experiments to be assigned
to the calorimeter system as the system heat capacity, or C value. If you place the
cursor on > Å @ and confirm with 2. you can enter the system heat capacity into
the C value box.
ci
Place the cursor on the experiments that were not used for calculating the average
value and delete with 'HO
cj
Exit the dialog box with 2. This ends the system calibration; you can now continue
with determining gross calorific values.