The HI-98131 is a slim, lightweight, and pocket sized meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature. The
meter operation is simplified with two buttons. One is used for on/off and for calibration while the other is used to switch between the measurement modes. The HI98131 has advanced features including a selectable EC to TDS conversion factor (0.5 - 500 ppm and 0.7 - 700 ppm).
Features at-a-glance
3 sensors in a single meter: pH electrode with extractable junction, Amperometric EC/TDS sensor, Exposed temperature probe for faster EC/TDS readings
Waterproof: Designed to withstand the humidity of a growing environment
Wide pH Range: pH range is from 0.00 to 14.00 pH
Selectable EC to TDS conversion factor:
Ordering Information: HI-98131 is supplied with HI-73127 pH electrode, HI-73128 electrode removal tool, batteries (4), instructions and quality certificate.
Data sheet:
| Accuracy EC | ±2% F.S. |
| Accuracy TDS | ±2% F.S. |
| Auto-off | after 8 minutes, 60 minutes, disabled |
| Battery Type / Life | 1.5V (4) / approx. 100 hours of continuous use, auto-off after 8 minutes of non-use |
| Dimensions | 163 x 40 x 26 mm (6.4 x 1.6 x 1.0’’) |
| EC/TDS Calibration | automatic, one-point at 1.41 mS/cm or 5.00 mS/cm; one point calibration using quick calibration solution |
| Environment | 0 to 50°C (32 to 122°F); RH max 100% |
| pH Accuracy | ±0.1 pH |
| pH Calibration | automatic, at one or two points using standard buffers (pH 4.01, 7.01,10.01); one point calibration using quick calibration solution |
| pH Range | 0.00 to 14.00 pH |
| pH Resolution | 0.01 pH |
| Range Conductivity | 0.00 to 6.00 mS/cm |
| Range TDS | 0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF) |
| Resolution EC | 0.01 mS/cm |
| Resolution TDS | 10 ppm (mg/L) |
| TDS Conversion Factor | 0.5 (500 ppm) or 0.7 (700 ppm) |
| Temperature Resolution | 0.1°C / 0.1°F |
| Temperature Accuracy | ±0.5°C /±1°F |
| Temperature Range | 0.0 to 60.0°C / 32.0 to 140.0°F |
| Weight | 100 g (3.5 oz.) |
The HI-98131 is a slim, lightweight, and pocket sized meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature. The
meter operation is simplified with two buttons. One is used for on/off and for calibration while the other is used to switch between the measurement modes. The HI98131 has advanced features including a selectable EC to TDS conversion factor (0.5 - 500 ppm and 0.7 - 700 ppm).
Features at-a-glance
3 sensors in a single meter: pH electrode with extractable junction, Amperometric EC/TDS sensor, Exposed temperature probe for faster EC/TDS readings
Waterproof: Designed to withstand the humidity of a growing environment
Wide pH Range: pH range is from 0.00 to 14.00 pH
Selectable EC to TDS conversion factor:
Ordering Information: HI-98131 is supplied with HI-73127 pH electrode, HI-73128 electrode removal tool, batteries (4), instructions and quality certificate.
Data sheet:
| Accuracy EC | ±2% F.S. |
| Accuracy TDS | ±2% F.S. |
| Auto-off | after 8 minutes, 60 minutes, disabled |
| Battery Type / Life | 1.5V (4) / approx. 100 hours of continuous use, auto-off after 8 minutes of non-use |
| Dimensions | 163 x 40 x 26 mm (6.4 x 1.6 x 1.0’’) |
| EC/TDS Calibration | automatic, one-point at 1.41 mS/cm or 5.00 mS/cm; one point calibration using quick calibration solution |
| Environment | 0 to 50°C (32 to 122°F); RH max 100% |
| pH Accuracy | ±0.1 pH |
| pH Calibration | automatic, at one or two points using standard buffers (pH 4.01, 7.01,10.01); one point calibration using quick calibration solution |
| pH Range | 0.00 to 14.00 pH |
| pH Resolution | 0.01 pH |
| Range Conductivity | 0.00 to 6.00 mS/cm |
| Range TDS | 0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF) |
| Resolution EC | 0.01 mS/cm |
| Resolution TDS | 10 ppm (mg/L) |
| TDS Conversion Factor | 0.5 (500 ppm) or 0.7 (700 ppm) |
| Temperature Resolution | 0.1°C / 0.1°F |
| Temperature Accuracy | ±0.5°C /±1°F |
| Temperature Range | 0.0 to 60.0°C / 32.0 to 140.0°F |
| Weight | 100 g (3.5 oz.) |
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