BRAND NEW Transformer Oil Gas Analyzer (TOGA) GC System

By analyzing the gases dissolved in transformer oil, potential transformer faults can be avoided. ASTM D3612 provides for identification and quantification of dissolved gases intransformer oil by GC. The SRI TOGA GC uses the version referred to as D3612B, the direct injection technique where the dissolved gas extraction takes place inside the GC. This means that other than collecting the transformer oil in a glass airtight syringe, no sample preparation is necessary prior to injection into the TOGA GC. This helps to avoid contamination made possible by transferring the sample between various containers.

Features:

By reconnecting a few tubing lines, the TOGA GC can be used to create dissolved gas standards. A Tedlar bag (or other container) filled with gas standard is connected to the standard pump. The standards preparation vessel is filled with sample liquid. The standard pump bubbles gas standard through the standards preparation vessel, equilibrating the liquid over time to a known concentration.

Concentration by Weight:
Hydrogen 10.7ppb
Oxygen 25.74ppm
Nitrogen 76.65ppm
Methane 70.6ppb
Carbon monoxide 207.4ppb
Carbon dioxide 518ppb
Ethylene 120.9ppb
Ethane 120.7ppb
Acetylene 86.7ppb

To achieve these chromatograms, a transformer oil standard was pumped through the gas extraction loop of a TOGA GC equipped with HID and TCD detectors. The TCD was used to quantify the oxygen and nitrogen because the HID is too sensitive for the large quantities typically found dissolved in transformer oil.