Omega Products DOB21 User Manual
Benchtop Dissolved Oxygen Kit
⻬ Scale Change in Auto-Range
⻬ Auto Calibration of All Parameters
⻬ Automatic Temperature Compensation
⻬ Salinity and Barometric Pressure Compensation
⻬ Data Logging up to 99 Points
⻬ BOD Capability
⻬ Zero and Span Auto Calibration
⻬ RS232 Output
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 cellmaintenance kit, BOD kit and operator’s manual all
in a hard carrying case.
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% O
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
2
DOB21
$
1008
DOB21, $1008,
shown smaller
than actual size.
Hard carrying case,
oxygen probe, cell
maintenance kit, and
BOD kit included.
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")
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Model No. Price Description
DOB21 $1008 Benchtop dissolved oxygen kit
Accessory
Model No. Price Description
DOE-21L $180 Replacement D.O. cell
DOM21L 68 Replacement cell maintenance kit for DOE-21L
DOM-ADP 72 Replacement BOD kit
DOE-21S 1620 Optional immersion polarographic cell with 20 m (66') cable
DOM-441 68 Replacement cell maintenance kit for DOE-21S
DOA-21RS 25 Sensor refill solution 50 mL (0.05 qt)
CDH-30PW 65 Optional AC power adaptor
MN1604 3 Replacement 9V battery
PHA-EH 64 Benchtop sensor holder
Comes complete with 1 dissolved oxygen probe, 1 cell maintenance kit, BOD kit, hard carrying case, 9V battery, and operator’s manual.
Ordering Example: DOB21, dissolved oxygen kit, CDH-30PW, AC power adaptor, $1008 + 65 = $1073.
Recommended Reference Book:
See Section Y For Additional Books
Quality Control in Analytical Chemistry,
CH-4222, $95
F-5
Our Dissolved Oxygen Instrumentation product line
continues to expand, visit omega.com for new details!
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& Service
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