Features:
- 1 or 2 points calibration using air-saturated water and zero oxygen solution.
- Manually salinity and barometric pressure compensation improve the accuracy of measurement.
- Automatic Temperature Compensation ensures accurate readings.
- Data Hold function freezes current reading for easy viewing and recording.
- Help message as a operational guide that helps you quickly using the meter.
- Built-in real-time clock stamps stored data to meet GLP standard.
- Expanded memory stores and recalls up to 48 readings.(Only for PH-820).
Other features for PH-821:
- Calibration Due Reminder prompts user to calibrate the meter regularly.
- Stability indicator automatically shows current measurement status.
- Selectable temperature unit (°C or °F ) meets different application requirements.
- System menu allows setting the 9 parameters, including the number of calibration points, resolution, stability condition, concentration units, etc.
- Reset feature automatically resumes parameters back to factory default options.
- Expanded memory stores and recalls up to 500 readings.
- Stored data can be transferred into computer by USB communication interface.
- Multi-mode power scheme ( battery, power adapter, USB port) ensures that use the meter smoothly.
Accessories: Dissolved oxygen electrode, electrolyte solution, membrane cap, batteries and carrying case
Technical Parameters:
|
Model |
PH-820 |
PH-821 |
| Dissolved Oxygen Range | 0.0〜20.0mg/L (or ppm) | 0.00-20.00mg/L (or ppm) |
| Accuracy | +0.5mg/L | ±0.2mg/L |
| Resolution | 0.1mg/L | 0.01 mg/L |
| % Saturation of Oxygen | 0.0-200.0% | 0.0-200.0% |
| Accuracy | ±10% F.S | +2.0% F.S |
| Resolution | 0.1% | 0.1, 1% |
| Calibration Points | 1〜2 points | 1〜2 points |
| Temperature Compensation | 0~40°C, 32-104°F, Automatic | 0~50°C, 32-122°F, Automatic |
| Barometric Pressure Correction | 60.0-112.5kPa, 450~850mmHg | 60.0-112.5kPa, 450~850mmHg |
| Salinity Correction | 0~35g/L | 0~50g/L |
| Hold Function | Manual | Manual or Automatic |
| Memory | Stores up to 48 data sets | Manual or Automatic (10, 20, 30 minutes) |
| Sensor Type | Polarographic Dissolved Oxygen Electrode | Stores up to 500 data sets |
| Connector | 4-pin mini plug | USB Communication Interface |
| Power Requirements | 1 ><9V/800mA battery | 6-pin mini plug |
| Battery Life | Approximately 150 hours | 3><1,5V “AA” batteries (Standard) or DC5V power adapter (Optional) |
| Dimensions | 185*88‘32mm | |
| Package Size(W*D*H) | 475*155*350mm | |
| Net Weight | 300g | |
| Gross Weight | 2kg | |
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