1. Киришүү
This manual provides detailed operating instructions and important safety warnings for the PEAKMETER PM6811A Wood Moisture Meter. Please read this manual carefully before use and retain it for future reference. This instrument is a stable, reliable, and safe resistive wood moisture meter designed for accurate moisture content determination.
It utilizes a high-performance microcontroller as its core measurement control unit, ensuring rapid response, high accuracy, and low power consumption. The PM6811A offers 6 moisture measurement modes, covering 4 types of wood species, paper, and building walls. Its compact size and large liquid crystal display (LCD) make readings clear and intuitive, making it suitable for rapid moisture content measurement in wood raw materials, paper, plywood, whitewashed walls, flooring, and other materials.

2. Коопсуздук нускамалары
Warning: The test probes of this meter are sharp and may cause body injury or device damage. Always replace the protective cover when not in use and keep the device out of reach of children.
- Before use, carefully inspect the instrument and its accessories. Discontinue use immediately if any visible damage to the meter case or accessories is found, or if the display shows any abnormalities.
- Always follow the operating instructions provided in this manual during measurement.
- Do not attempt to open the meter or alter its internal wiring, as this may cause damage to the device.
- Replace the batteries promptly when the under-voltage icon (battery symbol) appears on the meter's display.
- Avoid exposing the test probes to any charged objects, as this may damage the meter.
- Do not use or store the meter in environments with high temperature, high humidity, flammable or explosive substances, or strong electromagnetic fields.
3. Продукт бүтүп калдыview
3.1. Сырткы көрүнүшү жана компоненттери

- Өлчөө зонд
- Three-color display screen
- HOLD button (Power On/Off, Data Hold)
- MAX/MIN button (Maximum/Minimum value measurement)
- MODE button (Function selection, Backlight control)
3.2. Дисплей Icons
| Icon | Description |
|---|---|
| БЕРҮҮ | Data hold function active |
| МАКС | Maximum value measurement active |
| MIN | Minimum value measurement active |
| Батарея белгиси | Көлөмдүн астындаtage indication (replace batteries) |
| WALL | Building walls measurement mode |
| КАГАЗ | Paper packaging material measurement mode |
| WOOD (1, 2, 3, 4) | Wood species measurement mode (4 types) |
| % | Персенtage unit for moisture content |
| Auto-off icon | Indicates automatic power-off function is enabled |
4. Орнотуу
4.1. Батареяны орнотуу
The PM6811A requires 2 x 1.5V AAA batteries for operation. To install or replace batteries:
- Аппараттын артындагы батарея бөлүкчөсүнүн капкагын табыңыз.
- Капкакты жылдырыңыз.
- Туура полярдуулукту (+/-) камсыз кылуу менен эки AAA батарейкасын салыңыз.
- Батарея уясынын капкагын бекем жабыңыз.

5. Иштөө нускамалары
5.1. Power On/Off and Data Hold (HOLD button)
- Күйгүзүү: басыңыз БЕРҮҮ баскычы
- Өчүрүү: басып, кармап туруңуз БЕРҮҮ баскычын 2 секунда басыңыз.
- Дайындарды кармоо: During measurement, a short press of the БЕРҮҮ button will freeze the current reading, and the "HOLD" icon will appear on the display. Press it shortly again to exit data hold mode and resume normal measurement.
5.2. Measurement Type (MODE) and Backlight Control (MODE button)
- Режим тандоо: баскычын кыска басыңыз РЕЖИМ button to cycle through different measurement types: wood species (1, 2, 3, 4), paper packaging materials, and building wall modes. The device will retain the last selected mode upon power-off.
- Жарыкты башкаруу: басып, кармап туруңуз РЕЖИМ button to turn the backlight on or off. The backlight is enabled by default. The backlight color indicates moisture levels:
- Жашыл: Low moisture
- Сары: Medium moisture
- Кызыл: Жогорку нымдуулук
5.3. Maximum/Minimum Value Measurement (MAX/MIN button)
- баскычын кыска басыңыз МАКС/МИН button to switch between maximum (MAX) and minimum (MIN) value measurement modes. When active, the instrument will continuously display the highest or lowest reading recorded since entering the mode.
- This button does not have a long-press function.
5.4. Wood Species Measurement
- баскычын кыска басыңыз БЕРҮҮ түзмөктү күйгүзүү үчүн баскыч.
- басыңыз РЕЖИМ button to select the appropriate wood species type (1, 2, 3, or 4) based on the "Mode Comparison Table" in the Specifications section. If your specific wood type is not listed, select "Tree Species 3" for an approximate measurement.
- Remove the protective cover from the test probes.
- Insert the probes vertically into the wood sample until they reach the 6mm depth limit (refer to Figure 4).
- Wait for the reading on the screen to stabilize. This stable value represents the moisture content of the wood sample.
- During measurement, you can use the MAX/MIN and HOLD functions as described above.
Note: Moisture readings taken along the transverse direction of wood grain are typically lower than those taken along the longitudinal direction. The transverse direction measurement should be considered authoritative.

5.5. Paper Packaging Materials and Wall Measurement
- баскычын кыска басыңыз БЕРҮҮ түзмөктү күйгүзүү үчүн баскыч.
- басыңыз РЕЖИМ button to select either "PAPER" or "WALL" measurement mode.
- Remove the protective cover from the test probes.
- Insert the probes vertically into the paper or wall sample until they reach the 6mm depth limit (refer to Figure 5 for wall, Figure 6 for paper). If direct insertion is difficult, press firmly to ensure good contact for accurate measurement.
- After the reading stabilizes, the screen will display the moisture content value of the tested sample.
- During measurement, the MAX/MIN and HOLD functions can be used as described above.
Note: Inserting the probes into the measured object generally provides more accurate results compared to simply pressing against the surface.


5.6. Автоматтык түрдө өчүрүү
The device features an automatic power-off function, which is enabled by default. If no button is pressed within 5 minutes, the PM6811A will automatically power off to conserve battery life.
6. Техникалык тейлөө
6.1. Зондду алмаштыруу
If the measurement probes become damaged or worn, they can be replaced:
- Аспап өчүрүлгөнүн текшериңиз.
- Using a 5.0mm wrench, rotate the existing probe counterclockwise to remove it.
- Insert a new probe and tighten it clockwise until secure.

7. Техникалык шарттар
7.1. Жалпы техникалык мүнөздөмөлөр
- Бийиктиги: 2000 метрден төмөн
- Булгануу деңгээли: II деңгээл
- Иштөө температурасы: -10°Cден 60°Cге чейин
- Жумушчу нымдуулук: ≤75% RH
- Сактоо температурасы: -20°Cден 80°Cге чейин
- Сактоо нымдуулугу: ≤75% RH
- Батарея: 2 x 1.5V AAA батарейкалары
- Көлөмдүн астындаtage Көрсөтмө: Approximately 2.4V, LCD displays the battery symbol.
- Appearance Dimension: 136 мм × 54 мм × 28 мм
7.2. Measurement Technical Indicators
| Функция | Диапазон | Резолюция | Ката | Description |
|---|---|---|---|---|
| Нымдуулук | 2.0%~75.0% | 0.1% | ±1.0% | Wood Species 1: 2.0%~25.0% |
| Wood Species 2: 3.0%~30.0% | ||||
| Wood Species 3: 4.0%~35.0% | ||||
| Wood Species 4: 5.0%~40.0% | ||||
| Paper: 5.0%~75.0% | ||||
| Wall: 1.5%~30.0% |
7.3. Мүнөздөмөлөрү
| Мүнөздүү | Description |
|---|---|
| Дисплей | Maximum value "75.0%" |
| Арткы жарык | Default or low humidity: green; medium humidity: yellow; high humidity: red. Backlight can be turned off manually. |
7.4. Mode Comparison Table
| Type | Low Humidity (Green) | Medium Humidity (Yellow) | High Humidity (Red) |
|---|---|---|---|
| Tree Species 1 | <7.9% | 8.0%~11.9% | ≥12.0% |
| Tree Species 2 | ≤10.3% | 10.4%~14.8% | ≥14.9% |
| Tree Species 3 | <12.7% | 12.8%~17.6% | ≥17.7% |
| Tree Species 4 | <14.8% | 14.9%~20.4% | ≥20.5% |
| Кагаз | <11.9% | 12.0%~15.9% | ≥16.0% |
| Wall | <6.9% | 7.0%~9.9% | ≥10.0% |
7.5. Wood Species and Material Types
| Species Type | Examples |
|---|---|
| Wood Species 1 | Rhodesian Teak, White Red Bean Tree, Brazil Nut Tree, Afrormosia, Padauk |
| Wood Species 2 | Sandalwood, Elm, Yunnan Stone Oak, Hemlock, Camphor, Oak, Cedar, Douglas Fir, Water Ash, Larch, White Fir, Wood, White Ash, Walnut, Gmelina arborea Roxb, Keruing, Dryobalanops aromatica, Teak |
| Wood Species 3 | Balsa, Walnut tree, White poplar, Fir, Lauan, Maple |
| Wood Species 4 | Longleaf Pine, Chile Pine, White Pine, Larch, Abietin, Birch, Linden, Masson pine, Chilean tree, Apitong, Basswood |
| Кагаз түрлөрү | Printed Paper, Copper Paperboard, Cardboard, Carton |
| Building walls | Plaster Walls, Gypsum Board, Sub-Walls, Cement Walls |
For a comprehensive list of materials and their corresponding measurement types, please refer to the full user manual PDF.
8. Кыйынчылыктарды
This section addresses common issues you might encounter with your PM6811A Wood Moisture Meter.
- Дисплей жок/Түзмөк күйбөйт:
- Батареялардын туура полярдуулукта жана туура орнотулганын текшериңиз.
- Батареяларды жаңы 1.5V AAA батарейкалары менен алмаштырыңыз.
- Ensure the HOLD button is pressed correctly for power-on (short press).
- Туура эмес же туруксуз көрсөткүчтөр:
- Ensure the probes are fully inserted into the material (up to 6mm depth).
- Verify that the correct material mode (Wood Species 1-4, Paper, Wall) is selected.
- Clean the probes if they appear dirty or corroded.
- Ensure the material surface is free from excessive dust or debris.
- Avoid measuring in environments with strong electromagnetic interference.
- Replace worn or damaged probes as described in the Maintenance section.
- Арткы жарык иштебейт:
- Press and hold the MODE button to toggle the backlight on/off.
- Check battery level; low batteries might affect backlight performance.
If you encounter persistent issues not covered here, please refer to the official user manual PDF or contact customer support.
9. Кепилдик жана колдоо
For detailed warranty information, technical support, or service inquiries, please refer to the official user manual PDF or contact the seller/manufacturer directly. Keep your purchase receipt as proof of purchase for any warranty claims.
A comprehensive user manual is available in PDF format for download: PM6811A User Manual (PDF).

