Wohler 8440 HBF 420
Wohler 8440 HBF 420 Moisture Meter User Manual
Model: 8440 HBF 420 | Brand: Wohler
1. መግቢያ
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. የደህንነት መረጃ
Please read all safety instructions carefully before operating the device. Failure to follow these instructions may result in injury or damage to the meter.
- መሳሪያውን ለከፍተኛ ሙቀት፣ እርጥበት ወይም ቀጥተኛ የፀሐይ ብርሃን አያጋልጡት።
- መሳሪያውን ከጠንካራ መግነጢሳዊ መስኮች ያርቁ.
- መሳሪያውን እራስዎ ለመክፈት ወይም ለመጠገን አይሞክሩ. ሁሉንም አገልግሎቶች ብቁ ለሆኑ ባለሙያዎች ያመልክቱ።
- Ensure the measurement pins are clean and free from debris before use.
- Handle the measurement pins with care to avoid injury.
- በአካባቢያዊ ደንቦች መሠረት ባትሪዎችን ያስወግዱ።
3. ምርት አብቅቷልview
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.
- ዲጂታል ማሳያን አጽዳ.

ምስል 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".

ምስል 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. ማዋቀር
4.1 የባትሪ ጭነት
The Wohler HBF 420 requires 4 AAA batteries for operation.
- በመሳሪያው ጀርባ ላይ የባትሪውን ክፍል ሽፋን ያግኙ.
- ክፍሉን ለመክፈት ሽፋኑን ያንሸራትቱ ወይም ይንቀሉት.
- በክፍሉ ውስጥ እንደተገለጸው ትክክለኛውን ፖላሪቲ (+/-) በማረጋገጥ 4 AAA ባትሪዎችን ያስገቡ።
- የባትሪውን ክፍል ደህንነቱ በተጠበቀ ሁኔታ ይተኩ.
4.2 የመነሻ ኃይል በርቷል
የኃይል አዝራሩን ይጫኑ (⏻) to turn on the device. The display will illuminate and show a brief startup sequence.
5. የአሠራር መመሪያዎች
5.1 የመለኪያ ሁነታን መምረጥ
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.
- የመቋቋም መለኪያ፡- For precise determination of moisture content in wood using the integrated pins.
የሚለውን ተጠቀም M button to toggle between measurement modes. The display will indicate the active mode.
5.2 መለካት
- 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.
- 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.
- Read the value on the digital display.
5.3 የሙቀት ማካካሻ
For accurate resistance measurements in wood, the device offers automatic temperature compensation. Enter the material temperature using the አዘጋጅ 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 የማንቂያ ደወል ተግባር
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. ጥገና
6.1 ጽዳት
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 ማከማቻ
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. መላ መፈለግ
| ችግር | ሊሆን የሚችል ምክንያት | መፍትሄ |
|---|---|---|
| መሣሪያው አይበራም። | የሞቱ ወይም በስህተት የተጫኑ ባትሪዎች። | የባትሪውን ዋልታ ያረጋግጡ; ባትሪዎችን ይተኩ. |
| ትክክል ያልሆኑ ንባቦች። | Poor contact with material; dirty pins; incorrect mode. | Ensure full contact; clean pins; verify correct measurement mode. |
| ማሳያ ባዶ ወይም ብልጭ ድርግም የሚል ነው። | Low battery; internal error. | ባትሪዎችን ይተኩ. ችግሩ ከቀጠለ ድጋፍን ያነጋግሩ። |
8. ዝርዝሮች
| ባህሪ | ዝርዝር |
|---|---|
| የምርት ልኬቶች | 7.87 x 3.15 x 2.36 ኢንች |
| የእቃው ክብደት | 6.4 አውንስ |
| የንጥል ሞዴል ቁጥር | 8440 |
| ባትሪዎች | 4 AAA ባትሪዎች ያስፈልጋሉ። |
| አምራች | ዎህለር |
| የትውልድ ሀገር | ጀርመን |
| የመጫኛ አይነት | የጠረጴዛ ጫፍ |
9. ዋስትና እና ድጋፍ
For warranty information and technical support, please contact Wohler customer service directly. Refer to the product packaging or the official Wohler webየእውቂያ ዝርዝሮች ጣቢያ።
ዎህለር Webጣቢያ፡ www.wohler.com
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