IKA C 5000 control Package 2/12 - Manual (Page 26)

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IKA  -WERKE C 5000 control/duo-control Ver. 10 04.07
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In order to achieve these experiment conditions, the following components are
housed in the measurement cell
• Inner vessel with a water jacket
• Magnetic stirrer to create even distribution of heat within the inner vessel
• A water system with pump, expansion container and connection for an external
cooling unit
• Heater and temperature controller
• O
2
filling and degassing device
The measurement cell receives the signals for performing the individual steps of the
experiment from the controller. The controller records and monitors the experiment
data and operating states that are recorded by the sensors in the measurement cell.
The following processes take place during determination of gross calorific value in
the measurement cell:
• The cover of the measurement cell closes automatically and the decomposition
vessel with the fuel sample is immersed into the inner vessel.
• Pure oxygen flows through the oxygen filling device into the decomposition ves-
sel until the pressure preset by the user is reached (normally 30 bar).
• The pump fills the inner vessel and takes care of circulation in the water system.
• The magnetic stirrer keeps the water in the vessel constantly in motion so that
heat is distributed evenly.
• The fuel sample is electrically ignited by the ignition device.
• The water in the circuit is cooled off by an external cooling unit and is then
heated back up to the required temperature by the heater in the measurement
cell.
• After the end of the experiment, the over-pressure is allowed to escape from the
decomposition vessel, the inner vessel is emptied and the cover of the meas-
urement cell is opened. The decomposition vessel can then be removed.
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