Portable Dissolved Oxygen Meter PH-820 Biobase

Portable Dissolved Oxygen Meter PH-820 Biobase

The PH-820 Portable Dissolved Oxygen Meter by Biobase is a compact and highly reliable instrument for on-site dissolved oxygen measurement. Designed for field and mobile laboratory applications, it combines precision, user-friendly operation, and practical features such as automatic compensation, data storage, and USB connectivity. It is suitable for use in environmental monitoring, aquaculture, wastewater treatment, and education.

Features

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

2. Built-in salinity and barometric pressure compensation minimizes environmental interference.

3. Automatic temperature compensation ensures accurate results across varying field temperatures.

4. Auto-Read function stabilizes and locks measurements automatically.

5. Auto-power off conserves battery life during field operation.

6. Setup menu includes customization for calibration points, resolution, units, stability criteria, and time/date.

7. Reset function returns all settings to factory defaults with one command.

8. Internal memory stores up to 500 data sets (PH-821 version).

9. USB interface allows data transfer or optional external power connection.

Applications

1. Field and environmental testing of lakes, rivers, and reservoirs.

2. On-site aquaculture monitoring to ensure healthy oxygen levels.

3. Portable laboratory work in education or industrial inspections.

4. Wastewater or process water analysis in remote or outdoor environments.

Technical Specifications

1. DO measurement range: 0.00 to 20.00 mg/L and 0.0 to 200.0% saturation

2. DO accuracy: ±0.5 mg/L, ±2.0% (PH-820); ±0.2 mg/L, ±2.0% (PH-821)

3. DO resolution: 0.01 mg/L, 0.1%

4. Calibration points: 1 or 2 points

5. Temperature compensation range: 0 to 50°C / 32 to 122°F, automatic

6. Barometric pressure correction: 60.0 to 112.5 kPa / 450 to 850 mmHg, manual

7. Salinity correction: 0.0 to 50.0 g/L, manual

8. Stability criteria: default (PH-820); low or high selectable (PH-821)

9. Calibration due alarm: not available (PH-820); 1 to 31 days or off (PH-821)

10. Hold function: manual or auto-endpoint

11. Auto-off: after 30 minutes (PH-820); 10, 20, or 30 minutes (PH-821)

12. Memory: 100 data sets (PH-820); 500 data sets (PH-821)

13. Data interface: USB

14. Connector type: 6-pin mini-DIN

15. Display: custom LCD, 80 × 60 mm

16. Power supply: 3 × 1.5V AA batteries or DC5V power adapter

17. Dimensions: 170 × 85 × 30 mm

18. Net weight: 300 g

19. Package size: 475 × 155 × 350 mm

20. Gross weight: 1.7 kg

Accessories Included

1. DO100 dissolved oxygen electrode

2. Electrolyte solution

3. Membrane cap

4. Carrying case

Conclusion

The Biobase PH-820 Portable Dissolved Oxygen Meter offers a practical and accurate solution for field-based dissolved oxygen measurement. Its portable design, long battery life, and intelligent features make it ideal for professionals working in environmental monitoring, aquaculture, or remote water quality testing. The PH-821 model further enhances functionality with more data storage, selectable stability, and calibration alarm options.