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Portable Dissolved Oxygen Meter P820/821

Model : DO-P820; DO-P821
Range : 0.00~20.00mg/L, 0.0~200.0% saturation
Accuracy : ±0.5mg/L,±20%; ±0.2mg/L, ±2.0%
Sizes(W×D×H)(mm) : 170×85×30
Compact, portable dissolved oxygen meter offers user-selectable cable lengths and probe options.

Portable Dissolved Oxygen Meter Specifications:

DORange0.00~20.00mg/L, 0.0~200.0% saturation0.00~20.00mg/L, 0.0~200.0% saturation
Resolution0.01mg/L, 0.1%0.01mg/L, 0.1%
Other SpecificationsCalibration Points1 or 2 points1 or 2 points
Temperature Compensation0~50°C/32~122°F, automatic0~50°C/32~122°F, automatic
Barometric Pressure Correction60.0~112.5kPa/450~850mmHg, manual60.0~112.5kPa/450~850mmHg, manual
Salinity Correction0.0~50.0g/L, manual0.0~50.0g/L, manual
Stability CriteriaLow or high
Calibration Due Alarm1 to 31 days or off
Hold FunctionManual a auto endpointManual or auto-endpoint
Auto-Off30 minutes after last key pressed10,20 or 30 minutes after last key pressed
Memory100 data sets500 data sets
Communication InterfaceUSBUSB
Connector6-pin mini-DIN6-pin mini-DIN
DisplayCustom LCD (80×60mm)Custom LCD (80×60mm)
Power Requirements3×1.5V AA batteries or DC5V power adapter3×1.5V AA batteries or DC5V power adapter
Shipping Size (W×D×H)(mm)350x100x300
N.W./G.W. (kg)0.3/1.5

Portable Dissolved Oxygen Meter Features:

These two portable dissolved oxygen testers are one of the most popular DO meters, and the machines are divided into two models based on customer budget and needs.

The DO-P820 dissolved oxygen meter is less expensive and less accurate than the P821, making it suitable for use in aquaculture.

The P821 not only has high accuracy and supports storage of 500 sets of data but also has added limit value protection. Exceeding the high and low limit values will be alarmed to remind. If there are other concerns besides the above differences when purchasing a dissolved oxygen meter, you can choose the affordable P820. The following are the common features of the two:

  1. Automatic temperature compensation to ensure accurate measurements over the full range.

  2. Automatic endpoint lock, retains stable readings for easy viewing and recording.

  3. 1or 2 point calibration, using air-saturated water or zero-oxygen solution.

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

  5. USB interface for easy data transfer

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