Gas Chromatograph Tester

The more accurate full name of the Gas Chromatograph Tester should be the dissolved gas analysis gas chromatograph in oil, abbreviated as DGA chromatograph. It is a key analytical instrument used in industries such as power, petrochemicals, and rail transit to monitor the operating status of large oil filled electrical equipment (such as power transformers, reactors, transformers, oil filled cables, etc.) and diagnose internal latent faults.

(1) For chromatographic analysis of gases in oil samples, a clean, dry, and well sealed 100mL medical syringe must be used for sampling. After sampling, there should be no bubbles in the oil.

(2) Before sampling, the oil accumulated in the dead corners of the channel must be drained. Generally, 2-3L should be drained before sampling. When the pipeline is thick and long, at least twice its volume should be drained.

(3) The sampling connection pipe must be dedicated and acetylene welded rubber pipes are not allowed to be used as sampling connection pipes.

(4) After sampling, the syringe core should be kept clean to prevent jamming.

(5) From sampling to analysis, samples should be kept away from light and sent in a timely manner to ensure completion within 4 days.

1. Petrochemical industry: By analyzing samples of crude oil, refined oil products, and lubricants, it is possible to determine whether they meet the requirements. At the same time, quality issues during the production process can also be analyzed and resolved.
2. Environmental monitoring field: By analyzing and detecting pollutants in soil, water, air and other samples, it can help people understand the status and sources of environmental pollution, and take corresponding measures to protect the environment.
3. Pharmaceutical field: Oil chromatography analyzer can also be used for related research and experiments in pharmaceutical, biomedical and other fields, such as analyzing drug metabolites, detecting biomarkers, etc.

summarize
Gas Chromatograph Tester (DGA chromatograph) is an indispensable "diagnostic doctor" in modern power systems and large-scale industrial equipment maintenance. It utilizes the high separation ability and sensitivity of gas chromatography technology to accurately capture trace fault characteristic gases dissolved in insulating oil, providing the most direct and effective technical means for evaluating the internal insulation condition of equipment, early detection and diagnosis of latent faults. Its application greatly improves the safety and reliability of equipment operation, and is one of the core supporting technologies for preventive maintenance strategies.

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