HX679A Hydraulic Comparator HX679A can provide pressure for non-oil calibrating pressure gauges such as oxygen gauge, acetylene gauge. It is widely used in power, metallurgy, petroleum, chemical and the metrology industry. Characteristics Ø Food grade fine stainless steel and hermetic technology in the military industry Ø Cleaning easily Ø Fast connection, quick pressurizing and easy operation Ø The product is used for calibrating all kinds of non-oil gauges such as oxygen gauge, acetylene gauge Technical Specification Pressure range ( 0~ 600) bar Stability 0.05% F.S Working medium Distilled water , pure water Output interface M20* 1.5 Female Weight 3.9kg