Introduction
This manual provides comprehensive instructions for the safe and effective use of the TESMEN TWM-186 Portable Pin-Type Wood Moisture Meter. Please read this manual thoroughly before operation and retain it for future reference.
Safety Information
- The measurement pins are sharp. Handle with care to prevent injury.
- Do not attempt to measure live electrical circuits. This device is not designed for electrical testing.
- Keep the device dry. Avoid exposure to water or high humidity environments.
- Do not disassemble or modify the meter. Repairs should only be performed by qualified personnel.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
Product Overview
Included Components
- 1 x TESMEN TWM-186 Moisture Meter
- 2 x 1.5V AAA Batteries
- 1 x User Manual
Image: Contents of the TESMEN TWM-186 package, including the moisture meter, two AAA batteries, and the user manual.
Meter Components
The TESMEN TWM-186 features a compact, pen-shaped design for portability and ease of use.
Image: Front view of the TESMEN TWM-186 moisture meter, showing the display, buttons, and measurement pins.
- Measurement Pins: Located at the tip, these pins penetrate the material to measure moisture content.
- LCD Display: Shows moisture percentage, selected mode, and battery status.
- Power/Hold Button (⏻ / H): Press to power on/off. Short press during measurement to hold the reading.
- Mode Button (M): Press to cycle through the available material modes.
- Protective Cap: Covers the measurement pins when not in use.
Display and Backlight
The meter features a three-color backlight system to provide a quick visual indication of moisture levels:
- Green: Indicates low moisture content.
- Orange: Indicates moderate moisture content.
- Red: Indicates high moisture content.
Image: Illustration of the TESMEN TWM-186's three-color backlight display, indicating low (green), moderate (orange), and high (red) moisture content.
Setup
Battery Installation
- Locate the battery compartment cover at the top of the meter.
- Twist the cover counter-clockwise to open.
- Insert two 1.5V AAA batteries, ensuring correct polarity (+/-).
- Replace the battery compartment cover and twist clockwise to secure.
A low-battery indicator will appear on the display when battery replacement is necessary.
Operating Instructions
Power On/Off
- To power on, press the Power/Hold button (⏻ / H).
- To power off, press and hold the Power/Hold button (⏻ / H) for approximately 2 seconds.
- The meter will automatically power off after ten minutes of inactivity to conserve battery life.
Selecting Material Mode
The TWM-186 offers two main modes and seven calibration scales for various materials.
- Remove the protective cap from the measurement pins.
- Press the Mode button (M) to cycle through the available material categories (1-7). The selected category number will be displayed in the lower-left corner of the LCD.
- Refer to the "Calibration Scales" section to select the appropriate category for your material.
Image: Detailed diagram illustrating the seven calibration scales of the TESMEN TWM-186, listing material types and their respective moisture measurement ranges.
Taking a Measurement
- Ensure the correct material mode is selected.
- Carefully insert the measurement pins into the material. Ensure both pins penetrate the surface to obtain an accurate reading.
- The moisture level will be displayed as a percentage on the LCD.
Image: A hand demonstrating the use of the TESMEN TWM-186 moisture meter by inserting its pins into a piece of wood to measure moisture content.
Data Hold Function
To hold the current reading on the display, short press the Power/Hold button (⏻ / H) during a measurement. Press it again to release the hold and resume live readings.
Calibration Scales
The TESMEN TWM-186 features seven calibration scales, categorized into two modes, to accurately measure moisture in various wood and building materials.
| Category | Material Type | Moisture Range (%) |
|---|---|---|
| 1 | Wood (Beech, Spruce, Larch, Birch, Cherry, Walnut, etc.) | 6.8 - 60.0 |
| 2 | Wood (Oak, Pine, Maple, Ash, Douglas Fir, Eucalyptus, etc.) | 6.8 - 53.4 |
| 3 | Cement mortar layer, concrete | 0.9 - 24.5 |
| 4 | Anhydrous gypsum mortar layer | 0.0 - 12.2 |
| 5 | Cement mortar | 0.7 - 9.2 |
| 6 | Lime mortar, gypsum | 0.5 - 11.0 |
| 7 | Brick | 0.0 - 17.8 |
Maintenance
- Cleaning: Wipe the meter with a dry, soft cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the meter in a cool, dry place, away from direct sunlight and extreme temperatures. Always replace the protective cap over the pins when storing.
- Battery Replacement: Replace batteries when the low-battery indicator appears on the display. Dispose of old batteries responsibly.
- Pin Condition: Regularly inspect the measurement pins for damage or bending. Damaged pins can affect accuracy.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Meter does not power on. | Dead or incorrectly installed batteries. | Check battery polarity. Replace batteries if necessary. |
| Inaccurate readings. | Incorrect material mode selected; pins not fully inserted; damaged pins. | Select the correct material mode. Ensure pins penetrate the material adequately. Inspect and replace pins if damaged. |
| Display is dim or flickering. | Low battery power. | Replace batteries. |
| Meter automatically shuts off too quickly. | Normal auto-off function (10 minutes of inactivity). | This is normal operation. Power on again to continue use. |
Specifications
- Model: TWM-186
- Measurement Principle: Electrical Resistance
- Measurement Range: 0.0% to 60.0% (material dependent)
- Power Source: 2 x 1.5V AAA Batteries
- Auto Power Off: Approximately 10 minutes of inactivity
- Display: LCD with three-color backlight
- Item Weight: 3.17 ounces
- Package Dimensions: 6.81 x 1.85 x 1.26 inches
Warranty and Support
For warranty information or technical support, please contact TESMEN customer service through the official website or your purchase platform. Please have your model number (TWM-186) and purchase details available when contacting support.
