Manuel d'utilisation de l'humidimètre Wohler 8440 HBF 420

1. Introduction

The Wohler HBF 420 Moisture Meter is a versatile hand-held instrument designed to assess moisture content in various materials. It uniquely combines electrical resistance and dielectric measurement techniques, making it ideal for quickly assessing moisture profiles in building materials and precisely determining moisture content in wood. This manual provides comprehensive instructions for the safe and effective use of your device.

2. Consignes de sécurité

Please read all safety instructions carefully before operating the device. Failure to follow these instructions may result in injury or damage to the meter.

• N'exposez pas l'appareil à des températures extrêmes, à l'humidité ou à la lumière directe du soleil.
• Gardez l'appareil à l'écart des champs magnétiques puissants.
• N’essayez pas d’ouvrir ou de réparer l’appareil vous-même. Confiez toute réparation à un personnel qualifié.
• Ensure the measurement pins are clean and free from debris before use.
• Handle the measurement pins with care to avoid injury.
• Jetez les piles conformément aux réglementations locales.

3. Produit terminéview

The Wohler HBF 420 is designed for ease of use and accurate measurements. Key features include:

• Dual measurement techniques: Dielectric for quick assessment and Resistance for precise wood moisture.
• Automatic temperature compensation for accurate readings.
• Affichage numérique clair.

Figure 3.1 : Wohler HBF 420 Moisture Meter. This image shows the blue meter with its protective cap removed, revealing the digital display, control buttons (SET, M, power), and the two sharp measurement pins at the bottom. The display shows "16".

Figure 3.2 : Using the Wohler HBF 420 Moisture Meter. A hand is shown holding the blue meter against a concrete surface, demonstrating its application for measuring moisture in building materials. The display shows "8.9".

4. Installation

4.1 Installation de la batterie

The Wohler HBF 420 requires 4 AAA batteries for operation.

1. Repérez le couvercle du compartiment à piles à l'arrière de l'appareil.
2. Faites glisser ou déclipsez le couvercle pour ouvrir le compartiment.
3. Insérez 4 piles AAA en veillant à respecter la polarité (+/-) indiquée à l'intérieur du compartiment.
4. Replacez soigneusement le couvercle du compartiment à piles.

4.2 Mise sous tension initiale

Appuyez sur le bouton d'allumage (⏻) to turn on the device. The display will illuminate and show a brief startup sequence.

5. Mode d'emploi

5.1 Sélection du mode de mesure

The HBF 420 supports two primary measurement techniques:

• Dielectric Measurement: For quick assessment of moisture in building materials. This mode uses the sensor on the back of the device.
• Mesure de résistance: For precise determination of moisture content in wood using the integrated pins.

Utilisez le M button to toggle between measurement modes. The display will indicate the active mode.

5.2 Prendre une mesure

1. For Dielectric Measurement: Place the back of the device flat against the surface of the material you wish to measure. Ensure full contact. The reading will appear on the display.
2. For Resistance Measurement (Wood): Carefully press the two measurement pins into the wood surface. Ensure both pins penetrate the material. The moisture content will be displayed.
3. Read the value on the digital display.

5.3 Compensation de température

For accurate resistance measurements in wood, the device offers automatic temperature compensation. Enter the material temperature using the ENSEMBLE button and navigation controls (if available, based on typical Wohler interfaces, assuming the SET button is for settings/calibration). Refer to the on-screen prompts for specific temperature input procedures.

5.4 Fonction d'alarme

The device features an alarm function (indicated by "ALARM" on the device). Consult the device's on-screen menu or specific button functions to set or adjust alarm thresholds for moisture levels.

6. Entretien

6.1 Nettoyage

Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the measurement pins are clean and free of residue after each use.

6.2 Stockage

When not in use, store the Wohler HBF 420 in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.

7. Dépannage

8. Spécifications

9. Garantie et assistance

For warranty information and technical support, please contact Wohler customer service directly. Refer to the product packaging or the official Wohler website pour les coordonnées.

Wöhler Website: www.wohler.com