Features:
*1 or 2 points calibration using the air-saturated water or zero oxygen solution.
*Salinity and barometric pressure compensations eliminate the measurement error.
*Automatic temperature compensation ensures accurate readings over the entire range.
*Auto-Read function senses and locks the measurement endpoint.
*Auto-Power Off effectively conserves battery life.
*Setup menu allows setting the number of calibration points, resolution, temperature unit, concentration unit, stability criteria, date and time, etc.
*Reset function automatically resumes all settings back to the factory defaults.
*Expanded memory stores or recalls up to 500 data sets.
*USB communication interface for data transfer or connecting a power adapter to meter.
Technical Parameters:
|
Model |
PH-820 |
PH-821 |
|
|
DO |
Range |
0.00~20.00mg/L, 0.0~200.0% saturation |
|
|
Accuracy |
±0.5mg/L, ±2.0% |
±0.2mg/L, ±2.0% |
|
|
Resolution |
0.01 mg/L, 0.1% |
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|
Other Specifications |
Calibration Points |
1 or2 points |
|
|
Temperature Compensation |
0~50°C/32~122°F, automatic |
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|
Barometric Pressure Correction |
60.0~112.5kPa/450~850mmHg, manual |
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|
Salinity Correction |
0.0~50.0g/L, manual |
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|
Stability Criteria |
/ |
Low or high |
|
|
Calibration Due Alarm |
/ |
1 to 31 days or off |
|
|
Hold Function |
Manual or auto-endpoint |
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|
Auto-Off |
30 minutes after last key pressed |
10, 20 or 30 minutes after last key pressed |
|
|
Memory |
100 data sets |
500 data sets |
|
|
Communication Interface |
USB |
||
|
Connector |
6-pin nimi-DIN |
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|
Display |
Custom LCD (80*60mm) |
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Power Requirements |
3x 1.5V AA batteries or DC5V power adapter |
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|
Dimensions(mm) |
170*85*30mm |
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|
Weight(kg) |
300g |
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|
Package Size(W*D*H)mm |
475*155*350mm |
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|
Gross weight(kg) |
1.7kg |
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