Becoming a DDS Calorimeters Agent The CAL2K system for today and the future Digital Data Systems has an established name in the field of calorimeter design and manufacture. A brief synopsis of its history dates from the early 1970’s with the AMPC, the 1980’s with the CP500 and in the …
The CAL2K calorimeter from Digital Data Systems has a revolutionary vessel. The vessel features safety standards, data tracking requirements and reliability. The vessel is the heart of the calorimeter and features a printed circuit board containing : a microprocessor, memory, temperature sensors and other electronics, which are built into the …
The calorific value (CV) of most liquid oils can be determined in exactly the same way as solids, e.g. coal, i.e. by placing the sample in a pressurized vessel, igniting the sample and measuring the released heat in a controlled environment. The sample is placed in the crucible : the …
Refer to ISO 1928. Isothermal includes both static jacket and isoperibol. Isoperibol calorimeters control the temperature of the surrounding water jacket so that it is at a constant temperature. The static jacket has a thermal capacity such that the temperature of the surrounds remains nearly constant without active control. The …
Theory of “Dry Isothermal” CV Determinations : Conventional Way The CV (Calorific Value) of a substance is measured by burning it in a controlled environment. The resulting heat released by this combustion i.e. the net temperature rise, is proportional to the calorific value. A problem, however, occurs in that during …
Calorimeters are mainly used in the coal industry, i.e. coal fired power stations, iron and steel plants, cement plants and other users of coal. However, they are often used in other non-coal related industries. Some examples of other industries are : Animal Feeds – various experimental types of maize are …
Refer to the following specifications : ASTM E144-94, British Standards BS 4791-1985 The CAL2K vessels have a built in firing counter which monitors how many determinations a vessel has done. The vessel must be inspected after 5000 firings. At 4000 firings an alarm is activated to indicate that the vessel …
CV Measurements in the Animal Feed Industry Many institutions are doing research and development on animal feed. These institutions include: Animal and Dairy Research Department of Agriculture Universities Technicons Private Industries The aim is to improve the nutritional value of the feed. Part of the research involves the calorific value …
A ‘Miss Fire’ is indicated by the calorimeter when the temperature has not risen above the ‘MISSFIRE TEMPERATURE RISE’ limit 30 seconds after firing. This can have several reasons, which are explained. Open the vessel and check: If the cotton is fully intact: go to Electrical firing problem If the …
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