Description
Portable Hygro-Thermometer, Data Logger – EZDO | HT-390
The EZDO HT-390 is a lightweight, microprocessor-based humidity and temperature meter designed for routine environmental monitoring in laboratories, offices, warehouses, and industrial facilities. It simultaneously displays relative humidity and temperature on a clear LCD, with Max/Min/Record functions allowing users to track environmental fluctuations over time. Hi and Low alarm settings alert users when conditions exceed defined thresholds, supporting compliance with storage and process requirements.
A 100 ohm RTD combined with a thin polymer capacitor sensor provides reliable accuracy across the full measurement range. Battery life of approximately 200 consecutive hours with a standard 9V battery makes the HT-390 practical for extended monitoring without frequent battery changes.
Specifications
| Parameter | Specification |
|---|---|
| Model | HT-390 |
| Humidity Range | 1–99.9% RH |
| Temperature Range | -40°C to +60°C (-40°F to +140°F) |
| Resolution | 0.1°C / 0.1% RH |
| Accuracy | ±0.3°C; ±2.5% RH |
| Sensor | 100Ω RTD + thin polymer capacitor |
| Functions | Simultaneous display, Max/Min/Record, Hi/Low alarm, data hold, auto/manual power off |
| Power | DC 9V battery |
| Battery Life | Approx. 200 hours |
| Dimensions | 200×55×38 mm |
| Weight | 165 g |
| Brand | EZDO |
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