Oxygen analyzer for attention

Oxygen content analysis, especially during the trace analysis of oxygen because oxygen in the air as high as 21% O2, therefore if not handled properly can easily result in sample contamination and interference analysis data does not appear correct. The main reason is caused by improper operation of the oxygen analyzer. Here are just a few impact factors of oxygen analyzer.

1 leak. Oxygen analyzer must be strictly before the opening of the first leak. Oxygen Analyzer not only in the strict premise of leakage of data to get accurate results. Any connections, joints, valves, etc. are not tight, will result in reverse osmosis of oxygen in the air and oxygen analyzer into the pipe interior, to arrive at the result of the high oxygen content.

2 pollution. In the re-use of oxygen analyzer, the first should be noted that oxygen analyzer connected whether sampling line leak into the air, and must be careful to leak into the oxygen analyzer air blowing clean, try not to make large amounts of oxygen through the oxygen analyzer sensors to extend sensor life. Purification process in the pipeline system, to shorten the purification time, need to have some way, usually using a small flow of high pressure discharge gas and blowing alternately can be rapidly purified oxygen analyzer channels.

3 pipe material selection. Oxygen Analyzer pipe material and surface roughness will also affect the oxygen content in the sample gas changes. Generally should not use plastic pipe, rubber pipe, etc., as connecting pipe. Oxygen analyzer is usually used brass or stainless steel pipe, the amount of micro analysis (refer to <0.1ppm) it must be polished stainless steel tube.

4 gas system to simplify and clean. Oxygen analyzer trace gas analysis requirements must effectively rule out a variety of road pipe fittings, valves, table top in the dead of the sample gas pollution. Therefore, the oxygen analyzer should be as simple as possible air system, connect a small selection of dead parts. Also, avoid using water seal, oil seals and sealing wax and other equipment to prevent the escape of dissolved oxygen caused by pollution, but also the need to avoid the kind of gas leads to the oxygen analyzer to increase imports of pipeline could easily lead to contamination of the purification equipment. The only way to ensure the system clean, accurate data obtained.