IKA C 2000 basic Operating Instructions Manual page 19

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The calorimetric experiment, which entails combustion of the fuel sample under pre-
cisely defined conditions, takes place in the measuring cell.
The following components are located in the measuring cell for this purpose:
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The following processes occur in the measuring cell during an experiment:
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Inner vessel with insulating water jacket (outer vessel)
Stirrer to ensure uniform distribution of heat in the inner vessel
Water circuit with a heater element for controlled equalization of the system
temperature and automatic filling of the inner vessel
Temperature sensor to record measurement values
Oxygen filling apparatus for the decomposition vessel
The measuring cell cover closes automatically and the decomposition vessel is
immersed with the fuel sample in the inner vessel.
Pure oxygen flows into the decomposition vessel through the oxygen filling ap-
paratus until the pressure set by the user has been reached (30 bar).
Water from an external pressure source (a water faucet, laboratory thermostat
or cooler) flows into the device and is heated up to the working temperature
(optionally 25 ° C / 30 ° C).
The inner vessel is filled with temperature-controlled water (at working tem-
perature).
A stirrer ensures there will be uniform distribution of heat in the water within the
inner vessel.
The temperature of the water in the insulating outer vessel is controlled.
Die fuel sample is ignited electrically with the ignition device.
The increase in temperature of the water in the inner vessel is measured and
the gross calorific value is determined.
At the end of the experiment the inner vessel is emptied and the water in the
circuit is cooled off by an external cooler unit or is diverted to the outlet.
The measuring cell cover opens and the decomposition vessel can be removed.
Pressure must be released from the decomposition vessel manually (venting
button C 5010.6 or venting station C 5030).
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