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Wöhler 8440 | HBF 420 Moisture Meter | Wood (resistance) and building materials (dielectric)
The Wöhler HBF 420 combines electrical resistance measurement for wood with dielectric measurement for building materials in one handheld moisture meter. It is used for building diagnostics, leak detection, checks before painting or flooring, and assessing wood fuel.
Key features
- Resistance measurement for wood, range approx. 0 to 40 %, 10 wood species
- Non-destructive dielectric measurement, effective depth approx. 3 to 4 cm, 20 material codes
- 3-colour LED alarm with adjustable limit
- Adjustable auto-off function
- Uses 4 AAA batteries
- Specifications
- Features
- Downloads
| Part Number | 8440 |
| Brand | Wöhler |
| Wood (resistance) range | approx. 0 to 40 % |
| Needle length | 12 mm, 10 wood species |
| Dielectric effective depth | approx. 3 to 4 cm, 20 material codes |
| Alarm | 3-colour LED, adjustable limit |
| Operating conditions | 0 to 40 C, <90 % r.H. |
| Power supply | 4 x 1.5 V AAA batteries |
| Size / weight | 165 x 62 x 26 mm / 175 g (without batteries) |
Building diagnostics: Leak detection, damage assessments.
Building work: Taking measurements in advance of painting, laying down flooring, etc.
Evaluation of wood fuel materials is part of fuel management.
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