Description
1,Product Introduction
Professional portable conductivity meter, selectable TDS, salinity and resistivity measurement modes, 1 to 5 points calibration, setup menu contains 12 options, accuracy: 0.5% F.S.
2,Features
• Professional portable conductivity meter is equipped with a backlit LCD display.
• 1 to 5 points calibration with automatic recognition for conductivity standards.
• Selectable cell constant (K=0.1/1/10), reference temperature (20/25°C), TDS factor, linear and pure water compensations, seawater and practical salinity measurement modes.
• Automatic temperature compensation corrects conductivity measurements to the reference temperature.
• Auto-read function senses and locks the measurement endpoint.
• Calibration due alarm reminds the user to calibrate the meter regularly.
• Calibration log shows the calibration points and factor.
• Setup menu allows setting the number of calibration points, stability criteria, temperature unit,date and time, etc.
• Reset function automatically resumes all settings back to the factory defaults.
• Expanded memory stores or recalls up to 500 data sets.
• USB communication interface is easy to transfer data to a PC.
• Multi-mode power scheme (batteries, power adapter, USB port) ensures the smooth operation of the meter.
3,Specification
|
Model |
|
540-S |
|
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 5 points |
|
Calibration Solutions |
|
10 µS / 84 µS / 1413 µS / 12.88 mS / 111.8 mS |
|
TDS |
|
|
|
Range |
|
0 to 10.00, 100.0, 1000 ppm, 10.00, 200.0 ppt |
|
Resolution |
|
0.01, 0.1, 1, automatic |
|
Accuracy |
|
±1% F.S. |
|
TDS Conversion Factor |
|
0.1 to 1.0 (default 0.5) |
|
Salinity |
|
|
|
Range |
|
0.00 to 80.00 ppt / 0.00 to 42.00 psu |
|
Resolution |
|
0.01 |
|
Accuracy |
|
±1% F.S. |
|
Resistivity |
|
|
|
Range |
|
0.00 to 20.00 MΩ |
|
Resolution |
|
0.01 |
|
Accuracy |
|
±1% F.S. |
|
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 |
|
0.0 to 10.0%/°C |
|
Pure Water Compensation |
|
Yes |
|
Reference Temperature |
|
20 / 25°C |
|
Cell Constant |
|
K=0.1 / 1 / 10 / Custom |
|
Hold Function |
|
Manual / Auto-read measurement endpoint |
|
Stability Criteria |
|
Low / High |
|
Calibration Due Alarm |
|
1 to 31 days or off |
|
Auto-Power Off |
|
10 / 20 / 30 minutes after last key pressed |
|
Memory |
|
Stores up to 500 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 |
