Pressure tank Digital Data Systems

The DDS Bomb vessel is unique in that it is the first of its kind and displays the following features:

The vessel is smaller than conventional vessels, which results in a smaller heat capacity. Special attention has been given to a thermally balanced vessel design which has been achieved using computer aided design (CAD) and computer simulation of heat transfer characteristics.

The vessel has an oxygen volume of 0.22 litres (220ml), which allows for a 0,5gr coal sample at approximately 30MJ/Kg. The temperature sensors are located cylindrically within the vessel walls at eight places.
The approximate temperature rise of the vessel after burning of 0,5gr benzoic acid is 9 degrees C. Practical tests have shown that up to 0.8gr of benzoic acid can be burnt without affectin g the accuracy. Oxygen starvation affects the results with higher charges.

The vessel is "smart" with an microprocessor built into the base of the unit. All the information pertinent to a vessel is stored permanently inside the vessel i.e. vessel number, calibration, number of firings, date of last reconditioning etc.

The vessel PCB is only powered up when it is placed in the calorimeter. The consequences of the vessel memory is that any vessel can run in any ...follow link for more info

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