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Vaisala HM42

Vaisala HM42
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User’s Guide
www.vaisala.com
M211088EN-C
Vaisala HUMICAP® Hand-Held
Humidity and Temperature Meter
HM40 Series
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Vaisala HM42 Specifications

General IconGeneral
BrandVaisala
ModelHM42
CategoryMeasuring Instruments
LanguageEnglish

Summary

First Startup Guide

Battery Types and Usage

Charging Rechargeable Batteries

Parameters Explained

Measurement Views

Screen Layout and Controls

Identifies key elements on the device's screen and explains the function of control buttons.

Device Indicators

Numeric Measurement View

Statistics Measurement View

Graph Measurement View

Main Menu Navigation

Hold and Tag Functionality

Main Menu Options

Calibration Menu

Leads to procedures for calibrating the meter's humidity and temperature sensors.

Graph Duration Adjustment

Calibration Procedure

Settings Submenu

Units Configuration

Time and Date Settings

Ambient Pressure Setting

Calibration Reminder Setup

Battery Indicator Settings

Automatic Power Off Settings

Factory Settings Restore

Measurement Best Practices

Achieving Accurate Measurements

Guides on stable environments and avoiding temperature differences for reliable results.

Preventing Measurement Errors

Advises on avoiding condensation, rain, and the importance of regular calibration.

Device Maintenance

Changing the Probe Filter

Changing the Probe

Probe Calibration

Calibrating with HMK15

Setting Calibration Points

Explains selecting 1-point or 2-point calibration and preparing reference environments.

Setting Reference Value (Point 1)

Details how to input the reference value for the first calibration point.

Setting Reference Value (Point 2)

Details how to input the reference value for the second calibration point, if applicable.

Applying Calibration

Guides the user to confirm and save the calibration settings to the probe.

Technical Data

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