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Online Dissolved Oxygen Meter

Model : DO-O680
 
DO Range : 0.0~20.0mg/L
DO Accuracy : ±0.5mg/L
DO Resolution : 0.1mg/L
Sizes(W×D×H)(mm) : 96×96×75
The DO-O680 is a rugged, intelligent, versatile, portable online dissolved oxygen meter for use in the lab or in the field!
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Online Dissolved Oxygen Meter Specifications:

ModelDO-O680
DORange0.0~20.0mg/L
Resolution0.1mg/L
Accuracy±0.5mg/L
SaturationRange0.0~200.0%
Resolution0.001
Accuracy±2.0%
TemperatureRange0~60°C/32~140°F
Resolution0.1°C/0.1°F
Accuracy±1°C/±1.8°F
Offset Calibration1 point, reading ±10°C
CommunicationSignal Output4~20mA
LoadMax. 500Ω
Low or High Alarm0.00~20.00mg/L, selectable
Communication InterfaceHS485
Connection TerminalsDetachable screw terminals
Other SpecificationsDissolved Oxygen Calibration1 or 2 points
Temperature Compensation0~40°C, automatic
Barometric Pressure Correction60.0~112.5kPa/450~850mmHg, manual
Salinity Correction0.0-35.0g/L, manual
Power RequirementsDC24V
Sizes(W×D×H)96×96×75
Shipping Size (W×D×H)(mm)280×220×150
N.W./G.W. (kg)0.35/1.5

Online Dissolved Oxygen Meter Features:

DO-O680 is an online industrial dissolved oxygen meter with a 4 to 20mA signal output, 1 or 2 points calibration. It is a professional device for real-time oxygen concentration and % saturation measurement in the aquaculture industry or water treatment.

The dissolved oxygen meter is manufactured from durable materials and can be used in harsh industrial environments. It also continuously monitors dissolved oxygen levels in liquids, allowing real-time adjustment of process parameters to maintain optimal conditions. In short, the industrial online dissolved oxygen meter provides reliable and convenient real-time measurement of dissolved oxygen levels that helps in various industrial applications related to process control and optimization.


  1. Economical industrial online dissolved oxygen meter with polarographic electrodes.

  2. Setup menu to customize the number of calibration points, temperature units and more.

  3. Automatic temperature compensation ensures accurate measurements over the full range.

  4. High or low alarm limits, customizable hysteresis.

  5. 1 or 2 point calibration with air-saturated water or zero-oxygen solution.

  6. Reset function automatically restores meter to factory default settings.

  7. Salinity and atmospheric pressure compensation to eliminate measurement errors.


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Scitek Global is professional manufacture of Laboratory Instruments and Medical Devices, certified by ISO9001, ISO13485, ISO45001 and ISO14001. Products are certified by ETL, CE and FDA etc.

We look forward to establishing cooperation with more distributors all over the world, and working together to create greater customer value. Together we will be different.

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