LUTRON DISSOLVED OXYGEN METER DO 5509

* 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 flowmetersolar.com
* 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.