This document is the user manual of HI 96831 Ethylene Glycol Refractometer
The HI 96831 is a rugged, portable, water-resistant digital refractometer designed to determine the % volume and freezing point of ethylene glycol-based coolants or antifreeze. It utilizes Automatic Temperature Compensation (ATC) and features an automatic shut-off function after three minutes of non-use.
| Range (% Volume) | 0 to 100 % |
|---|---|
| Range (Freezing Point °C) | -50 to 80 °C |
| Resolution (% Volume) | 0.1% |
| Accuracy (% Volume) | +/-0.2 % |
| Minimum Sample Volume | 100 µl |
| Battery Life | 5000 readings |
| Enclosure Rating | IP 65 |
Calibration should be performed daily, before measurements are made, when the battery has been replaced, between a long series of measurements, or if environmental changes have occurred.
Distilled or deionized water must be used to fill the sample well for calibration.
The 'ATC' tag will blink and automatic temperature compensation is disabled.