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143
SIM HELP EVENT #
It enters a message number (#) in to the stored help memory. Other commands:
CMD=112
F11
The complete help event memory can be cleared with the:
147
DUMP RSLT VESSEL
The results of the specified vessel are dumped to the D1 port.
31 TEMPERATURE RISE
The vessel is calibrated with 0.5g BA which rises the vessel temperature by approx. 12.5C. This rise
should be achieved when a sample is burned. That it turns means that the sample mass should be
adjusted so that it yields approx. the same rise. The CAL3K can 'tolerate' a range from 8 to 16C rise when
calibrated with 0.5g of BA. Adjust the sample mass as follows:
Benzoic Acid
Food
Other
Oil, Fett, Fuel
The following commands are valuable:
81
READ LAST N_RISE 0
This reads the Net Rise of the last sample. The display is valid until a new vessel is fired.
31.1 VERY SMALL SAMPLE MASS
Sometimes a sufficient sample mass is not available. Then a vessel should be calibrated with less than
0.5g BA. It is a bit messy and not convenient to split a 0.5g tablet to ~0.2g or less, but it can be done.
BA Calibration Mass
~0.2g
~0.1g
Less than ~2C rise is not advised because the errors get out of hand.
If the calibration mass is changed then the calibration memory must be cleared and 4 calibrations must
be performed with the low mass. If more than one vessel is used then all vessels must be cleared and
fresh calibrated.
The following parameters must be set to confirm with the changed calibration:
104
LOW RISE LIMIT
The default is 8C. Change to suit!
105
HIGH RISE LIMIT
The default is 16C. Change to suit!
30
MIN MASS LIMIT
The default is 0.2g. Change to suit!
DDS CALORIMETERS OPERATIONS MANUAL V1.1
0
PRINT HELP HISTORY
Read last help history, Enter=more, F11=next
1
26.454KJ/g
~17KJ/g
<10KJ/g
~37KJ/g
Rise
Rise Range
5C
3-8C
2.5C
2-4C
1
1
1
2022
Digital Data Systems (Pty) Ltd.
CAL3K Advanced Bomb Calorimeters
www.ddscalorimeters.com
0.5g
0.75g
1.0g
0.3g
Website:
www.ddscalorimeters.com
67
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