Economy portable pH meter, 2 points calibration, automatic temperature compensation, system menu contains 2 optional parameters. The meter is used for measuring the pH and millivolt of samples. Accuracy: 0.01pH.
* Stability indicator automatically shows current measurement status.
* Auto-Hold function freezes stable reading for easy viewing and recording.
* Automatic electrode diagnosis shows offset and electrode slope.
* Reset feature automatically resumes parameters back to factory default options.
pH Mode (For PH-221/320):
* 1 to 5 points push-button calibration with auto-buffer recognition.
* Automatic electrode slope display helps user decide whether to replace sensor.
* Automatic Temperature Compensation provides accurate measured values.
* Calibration Due Reminder prompts you to calibrate the meter regularly.
ORP Mode(For PH-221/320):
* 1 point offset calibration allows adjusting the displayed value to a known standard.
* Relative and absolute mV measurement modes provide accurate ORP readings.
Model | | PH-221 | |
| pH Range | | -2.000~20.000pH | |
| pH Accuracy | | ±0.002pH | |
| Resolution | | 0.1, 0.01, 0.001pH, Selectable | |
| Calibration Points | | 1~5 points | |
| Calibration Solutions | | USA (pH1.68/4.01/7.00/10.01/12.45), NIST (pH1.68/4.01/6.86/9.18/12.45), DIN (pH1.09/4.65/6.79/9.23/12.75) or User-defined | |
| Temperature Compensation | | 0~100°C, 32~212°F, Manual or Automatic | |
| mV Range | | -1999.9~1999.9mV | |
| mV Accuracy | | ±0.2mV | |
| Resolution | | 0.1, 1mV, Selectable | |
| Calibration Points | | 1 point (Only for Relative mV mode) | |
| Ion Concentration Range | | / | |
| Ion Concentration Accuracy | | / | |
| Calibration Points | | / | |
| Temperature Range | | 0~105°C, 32~221°F | |
| Temperature Accuracy | | ±0.5°C,±0.9°F | |
| Resolution | | / | |
| Hold Function | | / | |
| Memory | | Stores up to 500 data sets | |
| Output | | USB Communication Interface | |
| Connector | BNC | |
| Power Requirements | | 3×1.5V "AA" batteries or DC5V power adapter | |
| Dimensions(W*D*H) | | 170*85*30mm |
| Package Size(W*D*H) | 475*155*350mm |
| Net Weight | 300g |
| Gross weight | 2kg |
