Description
1, Production introduction
Economical portable conductivity meter, 1 to 3 point calibration, selectable cell constant and temperature coefficient, setup menu contains 8 options, accuracy: 0.5% F.S.
2, Features
• Economical portable conductivity meter is equipped with a backlit LCD display.
• 1 to 3 points calibration with automatic recognition for conductivity standards.
• Selectable cell constant (K=0.1/1/10), reference temperature (20/25°C), linear/non-linear and
pure water compensation modes.
• Automatic temperature compensation corrects conductivity measurements to the reference
temperature.
• Auto-read function senses and locks the measurement endpoint.
• Auto-power off effectively conserves battery life.
• Setup menu allows setting the number of calibration points, temperature unit, etc.
• Reset function automatically resumes all settings back 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.
3, Specification
| Model | LH-520 |
| Conductivity | |
| Range | 0 to 20.00, 200.0, 2000 µS/cm, 20.00, 200.0 mS/cm |
| Resolution | 0.001, 0.01, 0.1, 1, automatic |
| Accuracy | ±0.5% F.S. |
| Calibration | 1 to 3 points |
| Calibration Solutions | 10 µS / 84 µS / 1413 µS / 12.88 mS / 111.8 mS |
| 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 |
| Temperature Coefficient | Linear (0.0 to 10.0%/°C) / Non-linear / Pure water |
| Reference Temperature | 20 / 25°C |
| Cell Constant | K=0.1 / 1 / 10 |
| Auto-Power Off | 30 minutes after last key pressed |
| Memory | Stores up to 100 data sets |
| Output | USB communication interface |
| Connector | 6-pin mini-DIN, 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 |
