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Simple troubleshooting of spark direct reading spectrometer

】 Article Source: Editor-in-Chief: Release time: 2019-11-12 11:13:00 Clicks: - [Big Middle Small]
Spark direct reading spectrometer is a highly integrated detection device composed of multiple detectors. Correct operation and simple maintenance of the spark direct reading spectrometer can greatly improve the service life of the spectrometer. This article introduces several simple features Troubleshooting.

未标题-1

1. The excitation part of the sample is white, without dark halo, and the excitation is incomplete.
Troubleshooting and analysis: The analysis believes that it should be caused by the impure argon gas not meeting the test requirements. Before replacing the argon gas, the sample analysis was normal. After a long period of argon flushing and continuous excitation of the waste sample, the fault persisted. We replaced the argon, flushed and stimulated the waste samples, and when we analyzed the samples, we found that the failure disappeared and the analysis was normal. Therefore, after solving this kind of failure many times, it was found that the excitation was incomplete, mainly due to insufficient purity of argon.
2. The excitation of the sample is incomplete, and the detected content of element C is much higher than the actual content.
Failure analysis and elimination: When working in summer, it was found that the sample was incompletely excited, and the content of C element detection was much higher than the actual content. After excluding other failure factors, it was considered to be the effect of excessive ambient temperature. Turn on the air conditioner to adjust the room temperature of the analysis room to about 25 degrees, and then perform sample excitation. The test results of the content of each element are correct, and the fault is resolved. Therefore, when the season changes, when the temperature changes greatly, try to keep all the working environment of the instrument indoor, the temperature is constant, and do a standardized procedure in time to correct the curve.
3. The spectrometer's argon is fast
Fault analysis and troubleshooting: Check whether the pressure gauge is within the normal range, or there may be air leakage at each joint of the gas circuit.
4. There is a dark circle at the excitation point after the steel sample is excited.
Fault analysis and troubleshooting: first check the purity of argon, then look at the outlet of the spark table of argon, and check whether the exhaust pipe is blocked, and it needs no cleaning. Blocking the spark table outlet may cause the exhaust gas to be unsmooth, making a dark circle at the excitation point. If the color of the black circle is darker, it will continue to expand and become diffused. It may also be that the sample is uneven or leaks for half a day when the sample is placed. Also, if the conditions of the excitation are changed, the color may be abnormal after the excitation. Darkness may be greater when the excitation energy is high. In addition, the phenomenon of carbon deposition due to excitation, air leakage, abrasion of the excitation table, and uneven sample will cause this phenomenon. Pay attention when replacing the electrode to avoid carbon deposition.
行业资讯 Keywords in this article: Industry News

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