This is an instruction manual for HMI41 indicator and HMP42 probe. It introduces the features and characteristics of the products, how to use, calibrate, maintain them etc.
This manual provides step‑by‑step guidance for setting up, calibrating, and using the HMP42 humidity probe together with the HMI41 handheld instrument. It covers battery installation, probe connection, measurement start, data collection, and troubleshooting.
The document also includes specifications of the probe, instructions for configuring display units, power‑off settings, and warranty information for Vaisala products sold in Japan. This manual is written in Japanese.