The DOB21 model has been discontinued. Please see the DOH-SD1 as a possible alternative or contact our Flow Engineering department.
The DOB21 is a compact benchtop dissolved oxygen meter
and a amperometric dissolved oxygen probe with automatic
temperature compensation for field or laboratory applications.
The unit measures dissolved oxygen in ppm or percent
saturation and temperature in degrees Celsius.
Programming is conveniently done via a three button
keypad and stored in the non-volatile memory. The unit also
includes an audible minimum and maximum alarm. The
DOB21 kit is supplied with the dissolved oxygen probe, a cell
maintenance kit, BOD kit and operator’s manual all in a hard
SPECIFICATIONS Dissolved Oxygen Measurement Range: 0 to 60 mgO2/L Resolution Selection: 1/0.1/0.01 Relative Accuracy: 0.02% of full scale
Oxygen Gas Measurement Range: 0 to 30% O2 Resolution Selection: 1/0.1 Relative Accuracy: 0.33% of full scale
Saturation Measurement Range: 0 to 600% Resolution Selection: 1/0.1 Relative Accuracy: 0.1% of full scale
General Automatic Temperature Compensation: 0 to 60°C (32 to 140°F) Barometric Pressure Compensation Altitude: Up to 10,000 m (32,808') Salinity Compensation: 0 to 40,000 ppm Display: 16 characters x 2 lines Power Supply: 9 Vdc battery (included) Operation Time: Up to 60 hours Dimensions: 170 H x 130 W x 135 mm D (6.7 x 5.1 x 5.3")
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