IKA C 7010 Operating Instructions Manual

15C7010/12 0508Intended purpose:The C 7010 and C 7012 decomposition vessels must only beused for determining the gross calorific value of solid and liquidcombustible materials in accordance with DIN 51900, BS 1016T5, ISO 1928, ASTM 5468, ASTM 5865, and ASTM 4809.Operation of decomposition vessels is only permitted in com-bination with the IKA calorimeter C 7000.Operating requirements:The maximum amount of energy input into the decompositionvessel must not exceed 40000 J. (Select the weight of thesample accordingly). The permissible operating pressure of230 bar (23MPa) must not be exceeded. The maximum per-missible operating temperature must not exceed 50 ° C.Do not fill the decomposition vessel too full of the sample.Only fill the decomposition vessel with oxygen up to a maxi-mum pressure of 40bar (4MPa). Monitor the adjusted pressu-re on the pressure reducer.Perform a check before every combustion to ensu-re there are no leaks (see the sections entitledLeakage test).Explosive substances:Many substances tend to combust in an explosive manner (forexample because of the formation of peroxide). This maycause the decomposition vessel to burst.The C 7010 and C 7012 standard decomposition vessels mustnot be used for examinations on samples that are capable ofexploding. It is absolutely essential to use a special high-pres-sure decomposition vessel to contain the sample in thesecases!Notes on the sample:Substances of which the combustion behavior is not knownmust be examined for their combustion behavior before com-bustion in the decomposition vessel C 7010 and C 7012 (dan-Saf et y inst uc t ions ger of explosion).If you are burning unknown samples, leave the room or keep asafe distance between you and the calorimeter.Benzoic acid must only be burned in the form of pellets!Combustible dust and powder must be compressed into pelletsbefore combustion. Oven-dry dust and powder such as woodchips, hay, straw, etc. burn in an explosive manner! They must bemoistened first! Readily combustible liquids with a low vapor pres-sure must not be come in direct contact with the cotton thread (forexample tetramethyl dihydrogen disiloxan)!Combustion residue, auxiliary materialsIn addition, toxic residues of combustion are possible in the formof gasses, ash or precipitates on the inner wall of the decomposi-tion vessel, for example.Observe the accident prevention requirements applicable to theactivity and the work station. Wear personal safety equipment.When handling combustion samples, combustion residues andauxiliary materials, the appropriate safety requirements must beobserved. The following are examples of substances that maycause dangers:corrosiveeasily flammablecapable of explodingcontaminated with bacteriatoxicOxygenWhen working with oxygen, observe the appropriate require-ments.Danger warning: As a compressed gas, oxygen promotes combu-stion, supports combustion intensively and may react violentlywith combustible substances. Do not use any oil or grease!Using a crucible made of stainless steelWhen using crucibles made of stainless steel, their conditionshould be carefully checked after every experiment.