... type gas in 20 mins No additional Accessaries requested HDGA Portable Dissolved Gas AnalyzerFeatures- Quick Testing 7 type gas in 20 mins ... in oil, accuracy to ±1ppm- Easy Operation, Operated by Button - Portable, Weighs up to 10 kgs- Stable performance, Good repeatability, and ... : 170× 340 × 460 mmWorking Method:PAS(Photo Acoustic Spectroscopy) HDGA Portable Dissolved Gas Analyzer