Manual

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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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