1. Introduction
Thank you for choosing the MeterTo ET-928 Digital LCD Wood Moisture Temperature Meter. This device is designed for quick and accurate measurement of moisture content in various materials such as wood, timber, cardboard, paper, plaster, concrete, and mortar, as well as ambient temperature. Please read this manual thoroughly before operation to ensure correct usage and to prolong the life of your instrument.
2. Safety Information
- Keep the device away from water and high humidity to prevent damage.
- Do not attempt to open or modify the device. Refer all servicing to qualified personnel.
- The electrodes are sharp. Handle with care to avoid injury.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
- Dispose of batteries and the device according to local regulations.
3. Product Features
The ET-928 meter offers the following key features:
- Digital LCD display for clear readings.
- Measures moisture content in wood (1% to 70%) and building materials (0.1% to 2.4%).
- Measures ambient temperature (0°C to 50°C / 32°F to 122°F).
- Equipped with 8mm replaceable electrodes for durability and precision.
- Automatic power-off function after approximately 30 seconds of inactivity to conserve battery life.
- Compact and portable design for easy handling.
Figure 1: MeterTo ET-928 Digital LCD Wood Moisture Temperature Meter. This image shows the front view of the device, highlighting the LCD screen and the two sharp electrodes at the top for material penetration.
4. Setup
4.1 Battery Installation
- Locate the battery compartment cover on the back of the device.
- Slide or unclip the cover to open the compartment.
- Insert the required batteries (typically 9V or AAA, refer to compartment markings) ensuring correct polarity (+/-).
- Replace the battery compartment cover securely.
4.2 Powering On/Off
- To power on the device, press the POWER button. The LCD will illuminate.
- The device will automatically power off after approximately 30 seconds of inactivity to save battery.
- To manually power off, press and hold the POWER button for a few seconds.
5. Operating Instructions
5.1 Selecting Material Mode
The ET-928 can measure moisture in different material groups. Press the MODE button to cycle through the available material modes (e.g., Wood, Building Materials). Ensure the correct mode is selected for accurate readings.
5.2 Taking a Moisture Reading
- Power on the device.
- Select the appropriate material mode using the MODE button.
- Carefully push the two electrodes into the material to be measured. Ensure both electrodes penetrate the surface adequately and are fully inserted.
- Read the moisture content percentage displayed on the LCD screen.
- Remove the electrodes from the material after taking the reading.
5.3 Taking a Temperature Reading
The device also displays ambient temperature. This reading is typically shown alongside the moisture reading or can be accessed via a dedicated temperature mode if available (refer to specific button labels on your device). The temperature range is 0°C to 50°C (32°F to 122°F).
6. Maintenance
6.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the electrodes are clean and free of debris after each use.
6.2 Electrode Replacement
The electrodes are replaceable. If they become dull or damaged, they can be unscrewed and replaced with new ones. Refer to the manufacturer's guidelines for purchasing replacement electrodes.
6.3 Storage
Store the device in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or dead batteries; incorrect battery installation. | Replace batteries; ensure correct polarity. |
| Inaccurate moisture readings. | Incorrect material mode selected; poor electrode contact; damaged electrodes. | Select correct material mode; ensure electrodes are fully inserted; replace electrodes if damaged. |
| No reading displayed when measuring. | Electrodes not making proper contact; material too dry or outside measurement range. | Ensure firm contact with material; check if material is within the device's measurement range. |
8. Specifications
| Parameter | Value |
|---|---|
| Electrode Length | 8mm |
| Electrodes | Replaceable |
| Moisture Range (Wood) | 1% to 70% |
| Moisture Range (Building Materials) | 0.1% to 2.4% |
| Temperature Range | 0°C to 50°C (32°F to 122°F) |
| Accuracy (Wood 0-30%) | ±1% |
| Accuracy (Wood 30-60%) | ±2% |
| Accuracy (Wood 60-70%) | ±4% |
| Accuracy (Other Materials) | ±0.5% |
| Accuracy (Temperature) | ±1°C / 1.8°F |
| Auto Power Off | Approx. 30 seconds of inactivity |
| Operating Ambient Temperature | 0°C to 50°C (32°F to 122°F) |
| Ambient Relative Humidity | 0% to 85% RH |
| Item Weight | 1.5 kg |
9. Warranty and Support
For warranty information or technical support, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase for warranty claims.
Manufacturer: MeterTo