LUTRON DO5509 DISOLVED OXYGEN METER

* Display 13 mm ( 0.5 " ) LCD, 3 1/ 2 digits * Measurement Range Dissolved Oxygen - 0 to 20.0 mg/ L, Res. 0.1 mg/ L. Acc ± 0.4 mg/ L * Sensor Temp. Compensation: Automatic from 0 to 40æ C * Battery: C 9V, Power Current Approx. DC 3.5 mA * Operating Temp. 0 to 50 æ C ( 32 to 122æ F ) * Operating Humidity Less than 80% RH * Dimension Main instrument : 131 x 70 x 25 mm ( 5.2 x 2.8 x 1.0 inch ) * Oxygen probe : 190 mm x 28 mm Dia. ( 7.5 " x 1.1 " Dia.) Probe cable length : 4 meters, Weight 350 g ( 0.77 LB ) - with probe & battery. Accessories Included : Oxygen probe( OXPB-09N ) ..1 Pc, Carrying case..1 Pc. Operation manual..1 Pc. Spare Probe head with Diaphragm set, OXHD-04.. 2 set, Probe-filling Electrolyte, OXEL-03.. 1 set Optional Accessories : * Oxygen probe ( OXPB-09) , Spare Probe head with Diaphragm set ( OXHD-04) , Probe-filling Electrolyte ( OXEL-03)