Water Hardness Meters
A131 Laboratory Water Hardness Meter
Multiparameter water hardness meter, 2 to 5 points calibration, setup menu contains 15 options, the meter is suitable for measuring ion concentration and water hardness, accuracy: 1% F.S.
Water Hardness Mode:
• Multiparameter water hardness meter is equipped with a 7 inch TFT display.
• 2 to 5 points calibration from low to high concentrations.
• Selectable measurement units (german degree, english degree, french degree, mmol/L and
mg/L) are used for professional water hardness measurements.
Ion Concentration Mode:
• 2 to 5 points calibration, including the selection of 8 concentration points.
• Electrode management is capable of storing and recalling up to 3 electrode slopes.
• Selectable ion measurement methods (direct reading, known addition, known subtraction,
sample addition, sample subtraction) and concentration units (ppm, mg/L, mol/L, mmol/L).
Other Features:
• Automatic temperature compensation ensures accurate readings over the entire range.
• Auto-read function senses and locks the measurement endpoint.
• Timed interval readings send the measurement data to a PC or printer.
• Limit Alarm automatically alerts when reading exceeds the specified range.
• Calibration due alarm reminds the user to calibrate the meter regularly.
• Calibration log shows the date, time, calibration points, offset and electrode slope.
• Password protection prevents the unauthorized calibration and settings.
• Expanded memory stores or recalls up to 1000 data sets.
• Reset function automatically resumes all settings back to the factory defaults.
Model | A131 | |
Water Hardness | ||
Range (Concentration) | 0.05 to 200 mmol/L | |
Range (German Degree) | 0 to 1120°dH | |
Range (English Degree) | 0 to 1404°e | |
Range (French Degree) | 0 to 2000°fH | |
Range (Ca²⁺) | 0 to 8000 mg/L | |
Range (CaCO₃) | 0 to 19999 mg/L | |
Range (CaO) | 0 to 11200 mg/L | |
Resolution | 0.001, 0.01, 0.1, 1, automatic | |
Accuracy | ±1% F.S. | |
Calibration | 2 to 5 points | |
Calibration Solutions | 0.01 / 0.1 / 1 / 10 / 100 mmol/L | |
Ion Concentration | ||
Range | 0.001 to 30000 (depending on the range of ISE) | |
Resolution | 0.001, 0.01, 0.1, 1, automatic | |
Accuracy | ±0.5% F.S. (monovalent), ±1% F.S. (divalent) | |
Calibration | 2 to 5 points | |
Calibration Solutions | 0.001 / 0.01 / 0.1 / 1 / 10 / 100 / 1000 / 10000 | |
Measurement Units | ppm, mg/L, mol/L, mmol/L | |
Measurement Methods | Direct reading, known addition, known subtraction, | |
sample addition, sample subtraction | ||
Electrode Management | 1 to 3 | |
mV | ||
Range | -2000.0 to 2000.0 mV | |
Resolution | 0.1 mV | |
Accuracy | ±0.2 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 | |
Stability Criteria | Standard / High-accuracy | |
Measurement Modes | Continuous / Auto-read measurement endpoint | |
Timed Interval Readings | 10 / 30 / 60 seconds, 10 / 30 minutes or off | |
Calibration Due Alarm | 1 to 31 days or off | |
High/Low Limit Alarm | Selectable | |
Password Protection | 4 digits | |
Memory | Stores up to 1000 data sets | |
Output | USB communication interface | |
Connector | BNC, 3.5 mm jack socket | |
Display | 7 inch TFT LCD | |
Power Supply | 12V DC power adapter | |
Dimensions | 240 × 220 × 80 mm | |
Weight | 1.7 kg |
Ordering Code | Meter Includes |
A131-WH | ISE-WH water hardness electrode |
TP-10K temperature probe | |
Water hardness standard solutions 10, 100 mmol/L | |
Ionic strength adjuster | |
12V DC power adapter |
| Items | Description |
| ISE-WH Water Hardness Electrode | Range: 0.05 to 200 mmol/L |
| Ionic Strength Adjusters | For adjusting the pH and background ionic strength |
| USB Cable | For transferring data or connecting power adapter |
| Thermal Printer | For printing the measurement data |
Ordering Code | Dimensions and Weights |
A131-WH | 30 × 25 × 20 cm, 2 kg |
