Portable Trace Oxygen Analyzer
GNL-B1A - Shanghai ChangAi Electronic Science & Technology Co.,Ltd (ChangAi)
GNL-B1A portable oxygen analyzer is used to measure the oxygen concentration in clean, dry and noncorrosive gas in plus pressure and widely used in the fields of nitrogen separation from air, petrochemical, metallurgy, electronic power and machinery manufacture. - See more at: http://en.ci-ele.com/8aedb8bf-ef48-4f8c-127a-797c939a6181/e326afa7-5026-ad01-e03a-735aa5e38e37.shtml#sthash.BDXqdhqn.dpuf