This document provides warranty information, features, and usage requirements for the HI 991404 and HI 991405 products. These products are warranted for two years, and the probes are warranted for six months. The warranty covers free repair or replacement but does not cover damages due to accident, misuse, tampering, or lack of prescribed maintenance.
This manual provides instructions for the Hanna Instruments HI 991404 and HI 991405 meters, which are designed for continuous, high-accuracy measurements of pH, EC/TDS, and temperature. These micro-processor based meters feature a large, dual level, backlit LCD and are powered by a 12 Vdc power adapter.
| pH Range | 0.0 to 14.0 pH |
|---|---|
| EC Range (HI 991405) | 0.00 to 20.00 mS/cm |
| Temperature Range | 0.0 to 60.0°C / 32.0 to 122.0°F |
| Power Supply | 12 Vdc power adapter |
| Dimensions | 160 x 105 x 31 mm |
The meters are warranted for two years against defects in workmanship and materials.
The HI 991404 includes a 1413 µS/cm calibration solution.
The HI 991405 includes a 12.88 mS/cm calibration solution.
Yes, by pressing and holding the MODE button until 'TEMP' and the current temperature unit are displayed.