This document describes the calibration process of Vaisala HUMICAP® Indicator HMI41 with Series HMD/W60/70 and HMP140 transmitters. The document provides information on standard transmitter settings and output scale selections.
This guide explains how to use the HMI41 as a field calibrator for Vaisala HMP140 analogue humidity transmitters. It covers the selection of calibrator functions, scale selection modes, and step‑by‑step calibration procedures.
The manual also provides the standard transmitter settings, default HMI41 memory values, and detailed instructions for voltage and current output selections, ensuring accurate on‑site calibration of the HMP140 series.
| Relative humidity range | 0…100 %RH |
|---|---|
| Temperature range | -40…460 °C |
Press the ON/OFF button, then within 1–2 seconds press both ENTER and MODE buttons until the calibrator function text appears on the display.
The HMP140 standard settings are 0…100 %RH humidity range, –40…460 °C temperature range, 0…5 V voltage output, and 0…20 mA current output.
The default settings are humidity range 0…100 %RH, temperature range –40…460 °C, voltage range 0…5 V, and current range 0…20 mA.