Key facts
- Brand
- Vaisala
- Model
- HM70
- Industry
- Industrial
- Documents
- 4
- Languages
- ZH · JA · EN
- Last added
- 2026-09-29
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Vaisala HM70 Humidity Temperature Meter User Manual
The HM70 is a handheld humidity‑temperature meter designed for field measurements of relative humidity, dew‑point temperature, and related parameters. It features a digital display, selectable measurement units, and optional analog output.
The manual covers safety guidelines, initial setup, battery replacement, power‑on procedures, button functions, display settings, data recording, data transfer to a computer, calibration methods, analog output configuration, probe adjustment, routine maintenance, and technical support information. This manual is written in Japanese.
Vaisala HM70 specifications
| Humidity measurement range | 0‑100 %RH |
|---|---|
| Humidity accuracy (0‑90 %RH) | ±1 %RH at +15 °C … +25 °C |
| Temperature accuracy at +20 °C | ±0.2 °C |
| Power source | Rechargeable NiMH battery pack or 4 AA alkaline cells |
| Data logging capacity | 2700 real‑time data points |
| Display IP rating | IP54 |
| Probe IP rating | IP65 |
Source: Vaisala HM70 Handheld Humidity and Temperature Instrument User Manual
All Vaisala HM70 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
How many probes can be connected to the HM70?
Up to two probes can be connected, including humidity, dew‑point or CO₂ probes.
From: Vaisala HM70 Handheld Humidity and Temperature Instrument User Manual
What is the data logging capacity of the HM70?
The device can record up to 2700 real‑time data points.
From: Vaisala HM70 Handheld Humidity and Temperature Instrument User Manual
How do I replace the battery pack?
The manual includes a section titled “バッテリーパックの交換” that describes the battery‑pack replacement procedure.
From: Vaisala HM70 Handheld Humidity/Temperature Meter Operating Instructions