Benchtop Dissolved Oxygen Meter

• % Concentration and PPM Readings
• Includes Swing Arm Holder
• Analog and RS-232 Outputs

DOB-930

• B.O.D. Mode Feature
• Alarms

The DOB-930 uses a clark type polarographic electrode optimized for both stability and speed of response, dissolved oxygen levels can be measured either as % saturation or as concentration in mg/l (PPM). The meter also has a mode dedicated to the determination of B.O.D. (Biochemical Oxygen Demand).

The graphics mode liquid crystal displays enables plain language, menu based operating procedures and clear presentation results. The results phase will enable the simultaneous display of dissolved oxygen levels and temperature.

The sensor measures the partial pressure of oxygen and the reported results are influenced by atmospheric pressure. The DOB-930 allows atmospheric pressure and salinity values to be entered through the menu options for automatic correction.

A real time clock is built into the meter and displays either day, month and year or second, minutes and hours. The clock facility also enables calibration checks to be prompted at intervals determined by the operator.

The unit includes a 100 location memory facility which enables the logging the results for subsequent recall to the display or downloading via the bi-directional RS-232 link to a printer or PC.

SPECIFICATION:

DO2:
Ranges: 0 to 199%, 0 to 25.0%, 0 to 19.99%
Resolution: 1%, 0.1%, 0.01mg/l
Accuracy: ±2% within 10°c of calibration temperature.

Ranges: -10° to 60°C, (14° to 140°C)
Resolution: 0.1°C/ 1°F
Accuracy: ± 0.5°C/ ±1°F
ATC range: 0° to 60°C (32° to 140°F)
Outputs: Analog 1 mV per digit, Bi-directional RS-232 Hi/LO Alarm outputs open collector 0.5A 50 V max
Clock: 24 Hour, Hours/mn/sec or day, month year (leap year corrected)
Stirrer speed: 0 to 100%
Alarm speed: 0 to 199.9% and 0 to 19.99 mg/L. Calibration reminder
Display: LCD Graphics
Power: Power supply 9V ac
Size: 275 L x 240 W x 150 mm D
Weight: 1.2 Kg (2.6 lbs)

To Order (Specify Model Number)
Model No	Price	Description
DOB-930	$1240	Benchtop dissolved oxygen meter with probe, ATC probe, swing arm holder, spare membranes, KCL fill solution, Zero powder, and power supply.

Ordering Example: DOB-930: Benchtop dissolved oxygen meter with probe, ATC probe,
swing arm holder, spare membrane, KCL fill solution, Zero powder and power supply. Price $1240

U.S.A. and Canada International Callers; Sales & Service; 203.359.1660

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