Features:
- 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.
- Help message as a operational guide that helps you quickly using the meter(for PH-220).
- Manual temperature calibration improves the measurement accuracy of meter(for PH-320).
- Selectable temperature unit (°C or °F) meets different application requirements(for PH-320).
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.
Ion Concentration Mode(For PH-320):
- 2 to 5 points calibration providing the 8 concentration points can be selected.
- Automatically recognize ion electrodes, does not need to specify the type of ion.
- Direction concentration readout simplifies the elaborate measurement process.
- Selectable multiple concentration units include the ppm, mg/L and mol/L.
Accessories:* PH electrode * Temperature probe * PH buffer solutions (pH4.01/7.00/10.01)
Technical Paramteres:
|
Model PH-220 |
PH-221 PH-320 |
||
| pH Range | -2.00~16.00pH | -2.000~20.000pH | -2.000~20.000pH |
| pH Accuracy | ±0.01 pH | ±0.002pH | ±0.002pH |
| Resolution | 0.01 pH | 0.1,0.01,0.001pH, Selectable | 0.1,0.01,0.001 pH, Selectable |
| Calibration Points | 2 points | 1-5 points | 1 -5 points |
| Calibration Solutions | USA (pH4.01/7.00/10.01) | 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 |
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 |
| Temp. Compensation | 0〜100oC,32〜212OF,
Manual or Automatic |
0~100°C, 32-212°F,
Manual or Automatic |
0~100°C, 32-212°F,
Manual or Automatic |
| mV Range | -1999-1999mV | -1999.9-1999.9mV | -1999.9-1999.9mV |
| mV Accuracy | +1mV | ±0.2mV | +0.2mV |
| Resolution | 1mV | 0.1, 1mV, Selectable | 0.1,1mV, Selectable |
| Calibration Points | / | 1 point (Only for Relative mV mode) | 1 point (Only for Relative mV mode) |
| Ion Concentration Range | 1 | 1 | 0.001 ~19999ppm,mg/L, mol/L (Refer to the range of ISE) |
| Ion Concentration Accuracy | 1 | 1 | ±0.5% F.S (Monovalent), +1% F.S (Divalent) |
| Calibration Points | 1 | 1 | 2-5 points (0.001,0.01,
0.1,1, 10, 100,1000, 10000ppm, mg/L, mol/L) |
| Temp. Range | 0~100’C, 32-212°F | 0~105°C, 32~221’F | / |
| Temp. Accuracy | +1°C | +0.5°C, +0.9T | / |
| Resolution | 0.1°C | / | / |
| Hold Function | Manual | 1 | 1 |
| Memory | Stores up to 50 data sets | Stores up to 500 data sets | Stores up to 500 data sets |
| Output | / | USB Communication Interface | USB Communication Interface |
| Connector | BNC | 1 | |
| Power Requirements | 1 ><9V/800mA battery | 3×1.5V “AA” batteries(Standard) or DC5V power adapter(Optional) | 3×1.5V “AA” batteries(Standard) or DC5V power adapter(Optional) |
| Dimensions(W*D*H) | 185*88*32mm | 170*85*30mm | |
| Package Size(W*D*H) | 475‘155*350mm | ||
| Net Weight | 300g | ||
| Gross Weight | 2kg | ||
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