CI-PC89M Plateau dispersion oxygen monitor Product FeaturesOxygen flow range: diffusion hole flow 20L/min adjust-able,nasalᅠsuctionᅠnozzleᅠflowᅠ0~5L/min adjustable;Oxygen flow rate 20L/mint, noise JF40dBA;3D ion flow sensor for the measuring unit, the design life of this sensor is 2 times of the ordinary ion flow sensor;Real-time online monitoring indoor air oxygen concen-tration, to ensure the safety of use;Provide oxygen concentration, equivalent altitude, absolute altitude, relative humidity,...