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Advanced Bomb Calorimeters - Manufacturing Superb Calorimeter for today's Analytical Needs.
Compliance with Standard Test Methods
Digital Data Systems "dry" static jacket bomb calorimeter systems are manufactured and designed in accordance with the following International Standards :
ASTM D1989 - 97
Standard Test Method for Gross Calorific Value of Coal and Coke by Microprocessor Controlled Isoperibol Calorimeters.
This test method covers the determination of the gross calorific value of coal and coke by an isoperibol bomb calorimeter using electronic temperature sensors and automatic calorimeter controllers.
Applies To : bomb; calirometer; calorific value; isoperibol bomb calorimeter; microprocessor
ISO 1928: 1995
Solid mineral fuels - Determining gross calorific value by bomb calorimetric method, and calculation of net CV.
Annexure B : Isoperibol and Static Jacket Bomb Calorimeter
Below is and extract from the International Standard :
Principle
The Characteristic feature of isoperibol calorimeters is the isothermal jacket. The temperature of the surrounding thermostat is kept constant throughout the experiment by active control. The static jacket calorimeter has a thermal capacity such that, even without active control, its temperature remains nearly constant during measurements. In both cases there is a flow of heat between the calorimeter itself and the thermostat. Calorimeters surrounded by thermally insulating material behave largely as static jacket calorimeters.
DIN 51900-2
Determining the gross calorific value of solid and liquid fuels using the Isoperibol or static-jacket calorimeter, and calculation of net CV.
Below is an extract from the International Standard :
The calorimeter bomb prepared as specified in DIN51900-1 is placed in a calorimeter can, which is filled with water and surrounded by an isoperibol or static jacket insulating jacket. After temperature has equalized and the fore period has elapsed, the fuel sample is fired and the increase in temperature is recorded. Recording is terminated at the end of the after period. The gross calorific value of the sample material is calculated from the corrected temeprature rise and the effective heat capacity of the calorimeter.
Note : The specified method is using an isoperibol or static jacket calorimeter covers all procedures in which the temperature of the calorimeter can differ from that of the jacket. As a result of the temperature difference, it is necessary to correct the rise in temperature for the heat exchange (1).
British BS 4791:1985
Specification for Calorimeter Bombs.
British BS 1016:105:1992
Methods for analysis and testing of coal and coke. Determination of gross calorific value using adiabetic, isothermal or static bomb calorimeter.
ASTM D240-02
Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter.
This test method covers the determination of the heat of combustion of liquid hydrocarbon fuels ranging in volatility from that of light distillates to that of residual fuels.
Applies to : bomb calorimeter methods; gross heat of combustion; heat of combustion; heating tests; net heat of combustion; Bomb calorimeter methods; Combustion--petroleum products; Heating tests--petroleum products; Oxygen bomb calorimeter methods; Oxygen consumption calorimetry.
ASTM D4809-00
Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter (Precision Method).
This test method covers the determination of the heat of combustion of hydrocarbon fuels. It is designed specifically for use with aviation turbine fuels when the permissible difference between duplicate determinations is of the order of 0.2 %. It can be used for a wide range of volatile and nonvolatile materials where slightly greater differences in precision can be tolerated.
Applies to : aviation turbine fuels; bomb calorimeter; heat of combustion; hydrocarbon fuels
ASTM E144-94
Standard Practice for Safe Use of Oxygen Combustion Bombs.
This practice covers methods for judging the soundness of new and used oxygen combustion bombs, and describes the precautions to be observed in oxygen bomb combustion methods. This practice is applicable to all procedures in which samples are completely oxidized by combustion in a metal bomb containing oxygen under pressure. Hydrostatic test and proof test shall be performed. The following precautions shall be observed in all oxygen bomb combustion methods: sample weight; oxygen filling system; ignition system; and safety barricade.
This practice covers methods for judging the soundness of new and used oxygen combustion bombs, and describes the precautions to be observed in oxygen bomb combustion methods.
This practice is applicable to all procedures in which samples are completely oxidized by combustion in a metal bomb containing oxygen under pressure. Where there is conflict with specific precautions in individual ASTM methods, the latter shall take precedence.
The values stated in inch-pound units are to be regarded as the standard. The metric equivalent of inch-pound units may be approximate.
Applies to : bombs; combustion; oxygen
Certifications
Digital Data Systems CAL2K, e2k and ECO bomb calorimeter systems carries the CE mark.
CE certification awarded by TUV Rheinland.
Click here to download the CE Certification.
Digital Data Systems vessels are pressure tested and certified by OSG which is a government approved inspection authority. All CAL2K pressure vessels are tested in accordance with International Standards. Click here to download a sample of the test certificate.
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