Overview The test standards for dissolved gas analysis in oil are GB T17623, ASTM D3612 and IEC60567, which are widely used and reliable means to determine the condition of transformers. The Mobile GC is the world's only portable chromatograph for dissolved gases in oil that is fully compliant with ASTM D3612 and IEC60567 standards. It is suitable for the continuous tracking and monitoring of newly put into operation equipment and overhauled equipment, the on-site detection of equipment in operation and sudden failure equipment, as well as the inspection of maintenance and operation personnel and the daily inspection of the laboratory.
Features The Mobile GC weighs 19kg and is lightweight and portable with the box lever. It can be easily carried to the site for on-site acceptance of the transformer, on-site confirmation of transformer fault conditions, and gas analysis in the gas collector box after the operation of the gas relay. The internal power supply allows the instrument to work for 6 hours, which can easily meet the needs of a day's work. In addition, 220V mains power and 12V external power supply can be used.
The Mobile GC can perform the analysis of 7 or 11 characteristic gases, and 7 fault characteristic gases (hydrogen, methane, carbon monoxide, carbon dioxide, ethylene, acetylene, ethane) are used to evaluate the state of the transformerFour recommended gases (oxygen, nitrogen, propylene, propane) provide a comprehensive understanding of transformer operation. Mobile GC extracts dissolved gases from oil samples through patented vacuum degassing methods, and ultra-high vacuum degassing treatment makes the dissolved gases in oil more fully extractedCombined with highly selective gas chromatography, mobile GC can achieve higher sensitivity. Simply secure the syringe to the inlet, confirm the testing process according to the instrument's instructions, and let the more specialized instrument do the rest. The Mobile GC fully automates injection, degassing, and injection of sample gas into the chromatography loop for analysis, eliminating the need for sample handling and delivering accurate results in the field that are consistent with those in the lab.
Mobile GC is suitable for acceptance services and routine testing, and the vacuum degassing unit can be used to test the total gas content in the oil during the dissolved gas testing process, providing an additional layer of assurance for the safety of power equipment. Basis: IEC 60599, Roger ratios, Duval and other evaluation expert systems can quickly give transformer condition diagnosis.
Application Whether it is testing in transformer manufacturing, on-site (acceptance, supervision, confirmation of abnormal conditions), direct analysis of gases in gas relays, or analysis in the laboratory, Mobile GC delivers accurate and reliable results.
Technical Comparison Standards Compliance: The Mobile GC is the world's only portable dissolved gas in oil chromatograph that is fully compliant with ASTM D3612 and IEC60567 standards. Test principle: Mobile GC uses FID, methane converter and TCD detector based on chromatographic principles, and other imported brand instruments can test up to 11 gas components with a test range of up to 100,00000ppm；Instruments using detection principles such as TCD, spectroscopy, and sensors can measure up to 9 gas components with a maximum range of 60,000 ppm. Due to the chromatographic dispersing power, the detection limits of the Mobile GC are as shown in the table below, which is far superior to that of a portable instrument using the infrared spectroscopy detection principle.