IKA C 2000 control User Manual
Page 18
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-WERKE C 2000 basic / control
Ver. 04 08.07
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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:
•
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 following processes occur in the measuring cell during an experiment:
•
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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