This document is the instruction manual for the HI 8424 portable pH/mV/°C meter, which provides information on the correct use of the instrument and its versatile features.
The HI 8424 is a portable microprocessor-based meter designed to measure pH, mV (ORP), and temperature. It features an enhanced user interface, automatic calibration recognition for buffers pH 4.01, 7.01, and 10.01, and automatic temperature compensation. The device includes a rainproof casing, battery percentage indication, and low battery detection.
| pH Range | -2.00 to 16.00 pH |
|---|---|
| mV Range | 699.9 mV / ±1999 mV |
| Temperature Range | -20.0 to 120.0°C / -4.0 to 248.0°F |
| pH Accuracy | ±0.01 pH |
| Battery Type | 1x9 |
| Battery Life | Approx. 150 hours |
| Included Probes | HI 1230B pH electrode, HI 7662 temperature probe |
The meter automatically recognizes three memorized buffer values: pH 4.01, 7.01, and 10.01.
The battery provides approximately 150 hours of continuous use.
The accuracy is ±0.01 pH at 20°C/68°F.