Overview The test standards for dissolved gas analysis in oil are GB T17623, ASTM D3612 and IEC 60567, which are widely used and reliable means to determine the state of transformers. At present, most of the oil sample preparation and testing process for dissolved gas analysis in oil is manually operated, which not only takes up a lot of labor, but also requires special training to avoid deviations in test results. The Weidmann TOP TOGA GC is a fully automated dissolved gas in oil chromatograph that requires no sample preparation, simply placing the syringe on a 16- or 32-position autosampler, and the instrument can be fully automated for sample filling and testing, guaranteeing high precision and accuracy of test results.
Features The TOP TOGA GC is a fully automated instrument that fully complies with ASTM D3612 IEC 60567 standards and uses a fully automated vacuum degassing method to extract the gas and transfer it to chromatography for analysis. Dissolved gases in up to 11 types of oil can be analyzed, and the volume of the gases removed is automatically measured during the degassing process and the total gas content in the oil is calculated. For high-voltage transformers, the total gas content in the oil is as important as the dissolved gas in the oil. The TOP TOGA GC is currently the only dissolved gas in oil analyzer that accurately measures the total gas content during the degassing process. The increase in the total gas content (TGC) is clearly indicated in the transformer.
There are faults, which may be thermal, electrical, or mechanical. The Top Toga GC enables automatic sampling of multiple samples in 16 or 32 positions with an autosampler, where the syringe is inserted into the sample tray and the instrument automatically tests the sample in batches. During sample changeover, an integrated rinsing step is used to remove sample carryover and eliminate cross-contamination between samples. The patented high-vacuum degassing method ensures the completeness and consistency of gas extraction, which can not only improve the sensitivity of the sample but also ensure the repeatability of the test results. The gases in the sample are removed and automatically transferred to GC for gas chromatography analysis of dissolved gas components using a thermal conductivity detector (TCD), a flame ionization detector (FID), and a methanation device. The entire analysis process is done in two steps, with high selectivity and accuracy, in full compliance with laboratory procedures.
The Top Toga GC allows the entire system to be calibrated during the measurement process, allowing the entire system to be verified for accuracy at any time, guaranteeing you confidence in your test results. Technical Specifications Sample volume: 30ml 100ml Detection limit: Hydrocarbon fraction less than 01ppm auto-filling: 16-position 100ml syringe or 30-position 50ml syringe Vacuum pump: oil-free and mercury-free, vacuum range (0.2 20)KPA Power supply: 100-240 VAC, 50 60 Hz Gas requirements: 99,999% argon for gas chromatography 99,999% hydrogen for gas chromatography Width Height Depth: 520 x 330 x 370mm Weight: 42 kg Application Scenarios It is suitable for the thermal operation test of factory transformers and the state analysis of oil-immersed power equipment in operation in the laboratory. The Top Toga GC is the ideal solution for automated testing of dissolved gases in oil.