The HI98131 GroLine pH and TDS water tester feature a large multi-level LCD that displays both pH, EC or TDS and temperature readings simultaneously. The pH readings are displayed with a 0.01 resolution and with an accuracy of +/-0.05 pH, while the EC and TDS readings are displayed with a 0.01 mS/cm and 10 ppm (mg/L) resolution and 2% full-scale accuracy. The EC range of the HI98131 is from 0.01 to 6.00 mS/cm and TDS is from 0 to 3000 ppm using a 0.5 conversion factor. The HI98131 also offers the option to use a 0.7 (700 ppm) EC to TDS conversion factor. An exposed temperature sensor allows for rapid temperature compensated measurements of EC and TDS. The LCD screen has indicators for calibration status and stability. The battery percent level is displayed at start up alerting the user to the remaining battery power that is available. The HI98131 is a versatile pocket meter designed for hydroponics, greenhouse and agriculture applications.
Simplified one-button calibration
One or two-point pH calibration is automatic to a pre-programmed buffer set (4.01, 7.01 and 10.01) or single point pH and EC calibration with the Hanna Quick Cal calibration solution. To perform a quick cal calibration, simply press and hold the left power/mode button while in measurement mode for three seconds and let go to enter calibration mode. Once both pH and EC are calibrated “CAL OK” is displayed and the meter returns to measurement mode.
HI73127 Replaceable pH electrode
The HI99131 TDS water tester is supplied with the HI73127 replaceable pH electrode. This electrode features an extractable junction that can be pulled 1/8″ out to clear any clogging that results in drifting and erratic readings.
| Specification Name | Detail |
|---|---|
| sku | HI98131 |
| pH Range | 0.00 to 14.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy (@25°C/77°F) | ±0.10 pH |
| pH Calibration | automatic, one or two-pointcalibration (using pH 4.01,7.01, 10.01 buffers); one pointcalibration using HI50036Quick Cal pH and EC one-pointcalibration solution |
| Temperature Range | 0.0 to 60.0 °C(32.0 to 140.0 °F) |
| Temperature Resolution | 0.1 °C(0.1 °F) |
| Temperature Accuracy (@25°C/77°F) | ±0.5 °C(±1.0 °F) |
| EC Range | 0.00 to 6.00 mS/cm |
| EC Resolution | 0.01 mS/cm |
| EC Accuracy (@25°C/77°F) | ±2% F.S. |
| EC Calibration | automatic, one-point at1.41 mS/cm or 5.00 mS/cm;one point calibration usingQuick Cal pH and EC one-pointcalibration solution |
| TDS Range | 0 to 3000 ppm (0.5 CF);0 to 3999 ppm (0.7 CF) |
| TDS Resolution | 10 ppm (mg/L) |
| TDS Accuracy (@25°C/77°F) | ±2% F.S. |
| TDS Conversion Factor | 0.5 (500 ppm) or 0.7 (700 ppm |
| Temperature Compensation | pH: automatic; EC: automatic, with ?= 1.9%/°C |
| Power Supply | 1.5V batteries (4 pcs.) |
| Power Consumption | approximately 100 hours ofcontinuous use |
| Environment | 0 to 50 °C (32 to 122 °F);RH max. 100% |
| Dimensions | 163 x 40 x 26 mm(6.4 x 1.6 x 1.0”) |
| Weight | 95 g (3.4 oz) |
| Ordering Information | HI98131 is supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries (4), instructions and quality certificate. |
| Warranty | This meter is warranted for a period of one year against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The electrode is warranted for a period of six months. |
