Fully automatic gas extraction unit compliant with international standards IEC 60567 and ASTM D-361 for dissolved gas analysis (DGA) of transformer oil.
Fully automatic gas extraction device based on multi-cycle mercury-free vacuum extraction method. It is connected to the Agilent GC system via a pump and tubes that comply with international standards IEC 60567 and ASTM D-361. The mercury-free toppler principle allows for extraction under high vacuum, enabling the extraction of more gas. Gas transfer from the pump to the GC is performed with a very small dead volume, which can be measured and used for correction. If the gas content is too low to be injected into the GC, it is automatically diluted with air or argon.
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basic information
System Configuration Components Dissolved Gas Analysis (DGA) is a widely used method for assessing the condition of oil-filled transformers. Initial faults within the transformer can be detected by analyzing the gases dissolved in the transformer oil. DGA is a diagnostic tool for detecting and evaluating initial faults in oil-filled transformers. The term "fault" here is defined as a process that causes abnormal energy dissipation within the transformer. When a fault occurs in the transformer, the insulation system undergoes chemical degradation, resulting in the generation of various gases that dissolve in the oil. These gases are often referred to as key gases, and their concentrations can be correlated with various types of faults in the transformer through different analytical methods.
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Applications/Examples of results
Main Features This system is fully compliant with the IEC 60567 standard. Sample volume: 10 to 250 mL Capable of measuring low concentration gases below 0.5 mL/L Extraction parameters can be freely set (stroke count and duration of each stroke can be configured) "Dead volume" can be measured for diagnostics and/or volume correction Diagnostic function of the piston pump (10 mL of air injected to check the airtightness of the piston) Measurement values can be exported in Excel format Displays all operational parameters including intermediate extractions and shows the final results Conversion to standard values of 1013.25 mbar and 20°C is possible All extraction processes can be executed manually in stages Calibration functions for scale, pressure sensor, temperature sensor, and vacuum sensor are included in the software. Buchholz gas analysis External gas (cylinder) analysis Uses hardware and software from a leading company in the measurement and control equipment field (National Instruments) User interface can be translated into the local language.
Company information
Aivic Research was established with the aim of contributing to the improvement of healthcare by helping to enhance the data accuracy of dissolution testing through the provision of excellent dissolution testers and dissolution tester inspection services, as well as introducing the latest dissolution testing information by utilizing various pipes from overseas, thereby supporting the development of the pharmaceutical industry in Japan.
