Key facts
- Brand
- Vaisala
- Model
- HMT100
- Industry
- Industrial
- Documents
- 4
- Languages
- EN · JA · ZH
- Last added
- 2012-04-06
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Vaisala HMT100 Temperature Humidity Converter User Manual
This manual covers the HMT100 temperature‑humidity converter, describing its features, specifications, and how to install the device in fixed or separate probe configurations. It includes safety guidelines, calibration procedures, and troubleshooting tips to ensure reliable operation.
The document also provides detailed wiring diagrams for current and voltage output, instructions for using calibration equipment, and technical support information for service and repair. This manual is written in Japanese.
Vaisala HMT100 specifications
| Relative humidity measurement range | 0 – 100 %RH |
|---|---|
| Relative humidity accuracy (0‑90 %RH) | ±1.7 %RH |
| Relative humidity accuracy (90‑100 %RH) | ±2.5 %RH |
| Temperature measurement range | -40 – +80 °C |
| Temperature accuracy at +20 °C | ±0.2 °C |
| Current‑loop output | 4 – 20 mA (two‑wire) |
| Voltage output options | 0‑1 V, 0‑5 V, 0‑10 V |
| Power supply | 10 – 35 VDC / 24 VAC |
| Enclosure protection rating | IP65 (NEMA 4) |
| Sensor type | Vaisala HUMICAP® 180 |
Source: Vaisala HMT100 Temperature Humidity Transmitter Manual
All Vaisala HMT100 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What safety warnings are included for the HMT100?
The manual warns that a serious hazard exists and that failure to follow the instructions can result in injury or death, and it cautions that improper handling may damage the product.
How should I protect the HMT100 from electrostatic discharge (ESD)?
Handle ESD‑sensitive components on a properly grounded workbench, wear a wrist strap, avoid touching component contacts, and ground yourself to the chassis before handling the unit.
What safety precautions are required when using the HMT100?
The manual stresses that ignoring safety warnings can lead to serious injury or product damage, so all safety notes must be followed.
From: Vaisala HMT100 Temperature Humidity Converter User Manual
How is the HMT100 calibrated?
Calibration can be performed using a calibrated standard probe or a calibration unit, following the step‑by‑step procedures described in the manual.
From: Vaisala HMT100 Temperature Humidity Converter User Manual
Can the probe be replaced without recalibrating the transmitter?
Yes, the probe is interchangeable and does not require recalibration after replacement.
From: Vaisala HMT100 Temperature Humidity Transmitter Manual
How often should the HMT100 be calibrated?
Vaisala recommends calibrating the HMT100 once per year.