Utilizing maintenance-free galvanic electrode that is unaffected by H2S and CO2, Model 630 measures atmospheric oxygen from 0-100% with 0.1% resolution and ±1% FS accuracy, ±1 digit. User attaches electrode to meter and uses screwdriver to adjust meter to display 20.9% (air) or to any gas of known concentration. Operating on single 9 V battery, meter features 0.5 in. high LCD, low battery indicator, and automatic temperature compensation from 0–40°C.
This story is related to the following:Oxygen Meters