JR-220 Portable pH Meter
Economical portable pH meter with mV measurement mode, 1 to 3 points calibration, automatic temperature compensation, setup menu contains 7 options, accuracy: 0.01 pH.
Features:
• Economical portable pH meter is equipped with a backlit LCD display.
• 1 to 3 points calibration with automatic recognition for USA and NIST buffers.
• Automatic electrode diagnosis helps the user determine whether to replace the pH electrode.
• 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 pH buffer set, number of calibration points, temperature unit,
etc.
• Reset function automatically restores all settings to the factory defaults.
• Expanded memory stores or recalls up to 100 data sets.
• USB communication interface for data transfer or connecting a power adapter to the meter.
| Model | JR-220 | |
| pH | ||
| Range | -2.00 to 20.00 pH | |
| Resolution | 0.01 pH | |
| Accuracy | ±0.01 pH | |
| Calibration | 1 to 3 points | |
| pH Buffer Options | USA (pH 4.01/7.00/10.01) / NIST (pH 4.01/6.86/9.18) | |
| mV | ||
| Range | -1999 to 1999 mV | |
| Resolution | 0.1 (0 to 999.9mV), 1 (1000 to 1999mV) | |
| Accuracy | ±1 mV | |
| Temperature | ||
| Range | 0 to 105°C / 32 to 221°F | |
| Resolution | 0.1°C/°F | |
| Accuracy | ±0.5°C / ±0.9°F | |
| Calibration | 1 point | |
| Calibration Range | Reading ±10°C/°F | |
| Other Specifications | ||
| Temperature Compensation | 0 to 100°C / 32 to 212°F, manual or automatic | |
| Hold Function | Manual / Auto-read measurement endpoint | |
| Auto-Power Off | 30 minutes after last key pressed | |
| Memory | Stores up to 100 data sets | |
| Output | USB communication interface | |
| Connector | BNC, 3.5 mm jack socket | |
| Display | Custom LCD (80 × 60 mm) | |
| Power Supply | 3 × 1.5V AA batteries or 5V DC power adapter | |
| Battery Life | Approximately 150 hours without backlight | |
| Environmental Conditions | 0 to 50°C / 32 to 122°F, relative humidity < 80% | |
| Dimensions | 170 × 85 × 30 mm | |
| Weight | 300 g |