Limiting Oxygen Index Tester

To automatically determine the minimum quantity of oxygen required for combustion. The apparatus determines the flammability characteristics of the materials used in the production of electric cables. The oxygen percentage is detected by a paramagnetic transducer (O2 accuracy <0.1%), and the combustion occurs inside the glass column. The operator is fixing only the O²ratio, while the N²flux is kept constant by proportional valve of the electronic system. Two units separated, one to check the measurements and one to feed oxygen and nitrogen to the column where the testing sample is placed.