The core requirements for oxygen in a calorimeter

When a calorimeter measures the calorific value of a substance, the quality of oxygen directly affects the accuracy of the results. It requires extremely high purity of oxygen, usually high purity oxygen with a purity of ≥ 99.5% is used. Too many impurities will interfere with the combustion reaction and cause deviation in the measurement data.

Precise control of oxygen pressure

Oxygen pressure is also a key factor. Oxygen supply pressure needs to be stable in the range of 0.28 - 0.3MPa. Too high pressure may cause safety problems, and too low pressure cannot ensure that the sample is fully burned, which affects the normal operation of the calorimeter.

Oxygen sources and options

The oxygen used in the calorimeter generally comes from a special oxygen cylinder. When selecting, ensure that the cylinder quality is qualified, the logo is clear, and the oxygen is strictly purified. High-purity oxygen purchased through regular channels can ensure the stable operation of the calorimeter and reliable data to the greatest extent.

Precautions for use

During use, it is necessary to regularly check whether the oxygen pipeline is well sealed to prevent oxygen leakage. At the same time, when replacing the oxygen cylinder, it is necessary to strictly follow the operating procedures to avoid air mixing and affect the purity of oxygen, so as to ensure the continuous and accurate operation of the calorimeter.