Product model: YSF-60W Theme features: YSF-60W gas density relay curve monitors the density of SF6 gas. It represents the temperature pressure comparison of SF6 under a certain rated working pressure on the dial with a curve, allowing people to conveniently and intuitively monitor the density of SF6 gas from the dial. Pressure gauges with this curve dial are called T-P curve density gauges. Used for monitoring the density of SF6 gas in sealed containers, capable of displaying gas density on site, suitable for monitoring low-pressure systems. Manufacturer: Hongqi Instrument Co., Ltd