Portable pH/ORP Meter PH-221
Professional portable pH meter with relative and absolute millivolts measurement modes. The meter supports 5 points calibration, system menu contains 9 optional parameters. Accuracy: 0.002pH.
pH Mode:
- Professional portable pH meter is equipped with a large backlit LCD display.
- 1 to 5 points push-button calibration with auto-buffer recognition.
- Selectable pH buffer standard (USA/NIST/DIN) or using the custom calibration solutions.
- Automatic electrode slope display helps user decide whether to replace sensor.
- Automatic Temperature Compensation provides accurate reading over the entire pH range.
- Calibration Due Reminder prompts you to calibrate the meter regularly.
ORP Mode:- Single point offset calibration allows adjusting the displayed value to a known standard.
- Relative and absolute millivolts measurement modes provide accurate ORP readings.
Other Features:- Stability indicator automatically shows current measurement status.
- Auto-Hold function freezes stable measured value for easy viewing and recording.
- Manual temperature calibration improves the measurement accuracy of meter.
- Selectable temperature unit (°C or °F) meets different application requirements.
- Automatic electrode diagnosis shows zero point offset and slope of the pH electrode.
Model PH-221 pH Range -2.000~20.000pH Accuracy ±0.002pH Resolution 0.1, 0.01, 0.001pH, Selectable Calibration Points 1 to 5 points Calibration Solutions USA, NIST, DIN or User-defined Temperature Compensation 0~100°C, 32~212°F Compensation Mode Manual or Automatic mV Range -1999.9~1999.9mV Accuracy ±0.2mV Resolution 0.1, 1mV, Selectable Calibration Points 1 point (Only for Relative mV mode) Calibration Range ±200mV Temperature Range 0~105°C, 32~221°F Accuracy ±0.5°C, ±0.9°F Resolution 0.1°C Calibration Range Measured value ±10°C Temperature Units °C or °F Others Hold Function Manual or Automatic Stability Conditions Low or High Calibration Due 0 to 31 days Power Off Manual or Automatic (10, 20, 30 minutes) Reset Function Yes Memory Stores up to 500 data sets Output USB Communication Interface Connector BNC Power Requirements 3×1.5V "AA" Batteries Battery Life Approximately 150 hours (Turn off the backlit) Dimensions 170(L)×85(W)×30(H)mm Weight 300g