HMT100 temperature and humidity transmitter with Vaisala HUMICAP® sensor is designed for environmental temperature and humidity monitoring. Typical applications include stable indoor environments, HVAC, livestock farms, greenhouses, indoor swimming pools, as well as outdoor applications.
The HMT100 is a remote‑probe or wall‑mounted temperature and humidity transmitter designed for demanding HVAC and environmental monitoring applications. It measures relative humidity from 0 % to 100 % RH and temperature from –40 °C to +80 °C, offering two‑wire current loop or three‑wire voltage outputs and optional display of RH, dew point and temperature.
The manual describes interchangeable probes, IP65 (NEMA 4) protection, installation accessories for outdoor or duct mounting, and a recommended annual calibration using Vaisala handheld instruments such as the HM70 or HHT41. Technical parameters, mechanical details, and wiring options are listed for easy integration into HVAC systems. This manual is written in Chinese.
| Relative humidity measurement range | 0 % – 100 % RH |
|---|---|
| Temperature measurement range | -40 °C – +80 °C |
| Power supply voltage | 10 V – 35 V DC / 24 V AC |
| Output type | Two‑wire current loop or three‑wire voltage |
| Ingress protection rating | IP65 (NEMA 4) |
| Recommended calibration interval | 1 year |
Vaisala recommends calibrating the HMT100 once per year.
Yes, the HMT100 can be installed outdoors using the rain‑proof kit and it meets IP65 (NEMA 4) protection.
It offers a two‑wire current loop or a three‑wire voltage output, with selectable display of relative humidity, dew point and temperature.
No, the probe is interchangeable and does not require recalibration after replacement.