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Feature
pH
• Multiparameter water quality meter is equipped with a 3.5 inches backlit LCD display• 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers• Automatic electrode diagnosis shows the pH slope and offset
Conductivity/TDS Modes
• 1 to 5 points calibration with automatic recognition for conductivity standards
• Selectable cell constant, reference temperature, TDS factor, linear and pure water compensations, seawater and practical salinity measurement modes
• Automatic electrode diagnosis shows the calibration points and factors
General Features
• Automatic temperature compensation ensures accurate readings over the entire range
• Auto-Read function senses and locks the measurement endpoint
• Calibration due alarm prompts user to calibrate the meter regularly
• Auto-Power Off effectively conserves battery life
• Setup menu allows setting the number of calibration points,resolution,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 PC
• Multi-mode power scheme (batteries, power adapter and USB port) ensures that using the meter smoothly.
Specificatonde
|
Model |
LH-901P |
|
pH |
|
|
Range |
-2.000 to 20.000pH |
|
Resolution |
0.001, 0.01, 0.1pH, selectable |
|
Accuracy |
±0.002pH |
|
Calibration Points |
1 to 5 points |
|
pH Buffer Options |
USA, NIST, DIN, 2 custom buffers |
|
mV |
|
|
Range |
±1999.9mV |
|
Resolution |
0.1, 1mV, selectable |
|
Accuracy |
±0.2mV |
|
Conductivity |
|
|
Range |
0.01 to 20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm |
|
Resolution |
0.001, 0.01, 0.1, 1 |
|
Accuracy |
±0.5% F.S. |
|
Calibration Points |
1 to 5 points |
|
Temperature Coefficient |
Linear (0.0 to 10.0%/°C), pure water |
|
Reference Temperature |
20/25°C |
|
Cell Constant |
K=0.1, 1, 10 or custom |
|
TDS |
|
|
Range |
0.00 to 10.00, 100.0, 1000ppm, 10.00, 200.0ppt |
|
Resolution |
0.01, 0.1, 1 |
|
Accuracy |
±1% F.S. |
|
TDS Factor |
0.1 to 1.0 (default 0.5) |
|
Temperature |
|
|
Range |
0 to 105°C/32 to 221°F |
|
Resolution |
0.1°C/0.1°F |
|
Accuracy |
±0.5°C/±0.9°F |
|
Offset Calibration |
1 point |
|
Calibration Range |
Reading ±10°C |
|
General Specifications |
|
|
Temperature Compensation |
0 to 100°C/32 to 212°F, manual or automatic |
|
Stability Criteria |
Low or high |
|
Calibration Due Alarm |
1 to 31 days or off |
|
Auto-Power Off |
10, 20 or 30 minutes after last key pressed |
|
Memory |
Stores up to 500 data sets |
|
Output |
USB communication interface |
|
Connector |
BNC, 6-pin nimi-DIN, 3.5mm jack socket |
|
Display |
Custom LCD (80×60mm) |
|
Power |
3×1.5V AA batteries or DC5V power adapter |
|
Battery Life |
Approximately 150 hours (turn off the backlight) |
|
Dimensions |
170(L)×85(W)×30(H)mm |
|
Weight |
300g |
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