It is suitable for measuring the calorific value of a substance that can be completely burned in high-pressure oxygen, and can also measure the calorific value of a substance that can be burned in a vacuum. The principle of measuring the calorific value of substances in high-pressure oxygen is as follows: first put the standard weight sample in a heat-resistant and corrosion-resistant stainless steel crucible, place the crucible in a stainless steel cartridge, tighten the elastic cap, and then insert the oxygen bomb Fill it with oxygen at a pressure of about 5% and then put it into a circular inner cylinder. When the sample in the cartridge is energized and energized, the heat generated by the sample's combustion is conducted from the cartridge wall to the inner cylinder's water. The heat capacity of the heat system (including water cylinder and oxygen bomb) can calculate the calorific value of the sample. The water in the aforementioned water sleeve is basically constant. The heat exchange between the water cylinder and the outer water sleeve during the experiment can be appropriately The calculation is corrected-calorimeter.
Temperature measurement range: 0 ℃ -65 ℃
Temperature measurement resolution: 0.0001 ℃
Calorific value test accuracy: better than 0.2% (benzoic acid)
Power supply: AC220V ± 10% 50Hz
Thermal capacity: about 10450J / K
Test time: about 15min-sulfur tester
1) According to the packing list, take out all the packing in the box.
2) Carefully check for missing parts or damage, check for defects, and contact the supplier in time to find a solution. Do not use it rashly.
3) The instrument should be far away from high temperature heat source and steam. (Calorimeter)
4) The instrument should be installed on a horizontal cement board or other work surface without vibration, and the distance from the wall or other objects is not less than 150 mm.
5) Do not place any objects on top of the instrument.
6) Warning-the instrument must be well grounded-coal testing equipment.
7) Place the main unit of the analyzer, printer and microcomputer in turn.
8) Connect the printing cable, monitor and keyboard.
9) Connect the power supply with good grounding.
Oxygen bomb: In addition to cleaning the oxygen bomb after each test, the following points should also be noted and checked:
(1) The oxygen bomb can only be twisted by hand. When the hand feels resistance, it should be stopped. Never use a tool to twist it hard.
(2) The spring cap and valve seat should be rinsed and dried after use.
(3) Rinse the bullet cup, scrub the threads, and check the upper part of the bullet cup for mechanical damage. Be careful not to turn the bullet cup upside down.
(4) Check whether the sealing ring is worn, if the seal is not tight and there is air leakage, it should be replaced.
(5) Conduct regular insulation performance inspection.
(6) Perform a 20Mpa water pressure test on the oxygen bomb regularly. After each water pressure test, the oxygen bomb must not be used for more than 2 years.
(7) Outer water tank: If the test is stopped for a long time, the water in the tank needs to be drained to keep the interior clean and clean, and do not allow dirt to fall into the tank.
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