Model | PH-820 | PH-821 |
Dissolved Oxygen Range | 0.0~20 .0mg/L (or ppm) | 0.00~2000mg/L (or ppm) |
Accuracy | t0. 5mg/L | t0 2mg/L |
Resolution | 0. 1mg/L | 0.01mg/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 | 1x9V/800mA battery | 6-pin mini plug |
Battery Life | Approximately 150 hours | 3x1 .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 |