Complaint
* 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers.
* Automatic electrode diagnosis shows the pH slope and offset.
* Automatic temperature compensation ensures accurate readings over the entire range.
* Calibration due alarm prompts user to calibrate the meter regularly.
Model | PH-220 | PH-221 | |
pH | pH Range | -2.00-20.00pH | -2.000~20.000pH |
pH Accuracy | ±0.01 pH | ±0.002pH | |
Resolution | 0.01 pH | 0.1, 0.01, 0.001 pH, Selectable | |
Calibration Points | 1 to 3 points | 1 to 5 points | |
pH Buffer Options | USA (4.01/7.00/10.01), NIST (4.01/6.86/9.18) | 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 2 custom buffers | |
ORP | mV Range | -1999-1999mV | -1999.9-1999.9mV |
mV Accuracy | ±1mV | ±0.2mV | |
Resolution | 1mV | 0.1,1mV, Selectable | |
Calibration Points | / | 1 point | |
Temperature | Temperature Range | 0~105°C/32221°F | |
Temperature Accuracy | ±0.5°C/±0.9°F | ||
Resolution | 0.1°C/0.1°F | ||
Offset Calibration | 1 point, reading ±10°C | ||
Other Specifications | Temperature Compensation | .100°C, manual or automatic | |
Stability Criteria | / | Low or high | |
Calibration Due Alarm | / | 1 to 31 days or off | |
Slope/Offset Display | Yes | ||
Hold Function | Manual or auto-endpoint | ||
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 | BNC, 3.5 mm jack socket | ||
Display | Custom LCD (80 x 60 mm) | ||
Power Requirements | 3*1.5V AA batteries or DC5V power adapter | ||
Battery Life | Approximately 150 hours (Turn off the backlight) | ||
Dimensions(W*D*H) | 170*85*30mm | ||
Package Size(W*D*H) | 475*155*350mm | ||
Net Weight | 300g | ||
Gross weight | 2kg | ||
