Adwa AD630 waterproof portable DO meter

Adwa AD630 waterproof portable DO meter Adwa AD 630 DO & Temperature Waterproof TECHNICAL DATA Range 0.00 to 45.00 ppm O2 0.0 to 300.0 % saturation 0.0 to 50.0° C / 32.0 to 122.0° F Resolution 0.01 ppm / 0.1% 0.1° C / 0.1° F Accuracy ± 1.5% f.s. ( DO) ± 0.5° C / ± 1.0° F DO Calibration Automatic, at 1 or 2 standard points ( 0 and 100% ) or 1 custom point ( > 20% ) Temperature Calibration User offset adjustment Temperature Compensation Automatic from 0 to 50° C Altitude Compensation 0 to 4000 m ( resolution 100 m) Salinity Compensation 0.0 to 50.0 g/ l ( resolution 0.1 g/ l) Log-on-demand Up to 100 samples PC Interface RS232 port Probe ( included) AD8001/ 3 galvanic DO probe with built-in temperature sensor, DIN connector and 3 m cable Environment 0 to 50° C ( 32 to 122° F) RH max. 100% non-condensing Power Supply 4 x 1.5 V AA, alkaline battery Battery Life Approx. 200 hours of continuous use Auto-off User selectable: 5 minutes or disabled Dimensions 188 x 96 x 70 mm Weight 460 g