WMM 50 - Measurement PCE Instruments - Free user manual and instructions
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| Product Type | Moisture Meter |
| Model | WMM 50 |
| Brand | PCE Instruments |
| Measurement Principle | Electrical resistance |
| Measuring Range (Wood) | 5% to 50% |
| Measuring Range (Building Materials) | 0.2% to 2.0% |
| Resolution | 0.1% |
| Accuracy | ±1% (wood) |
| Display | LCD with backlight |
| Electrodes | Integrated pins |
| Dimensions | 150 x 60 x 30 mm |
| Weight | 150 g |
| Power Supply | 9V battery (6F22) |
| Auto Power Off | After 5 minutes |
| Data Hold | Yes |
| Low Battery Indication | Yes |
| Calibration | Automatic |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 50°C |
| Included Accessories | Carrying case, manual, battery |
| Maintenance | Clean with dry cloth, store in dry place |
| Safety | Do not measure live wires, use insulated probes |
Frequently Asked Questions - WMM 50 PCE Instruments
How do I measure moisture content in wood?
Press the pins firmly into the wood surface. Ensure good contact. Read the value on the display. The device automatically compensates for temperature.
What is the measuring range of the WMM 50?
For wood, the range is 5% to 50%. For building materials (like plaster or concrete), it is 0.2% to 2.0%.
How accurate is the moisture meter?
The accuracy is ±1% for wood and ±0.2% for building materials under normal conditions.
How do I replace the battery?
Open the battery compartment on the back. Replace the 9V battery (6F22) with a new one, respecting polarity. Close the compartment securely.
Why does the display show 'LO' or 'HI'?
'LO' indicates the moisture level is below the measurement range (less than 5% for wood). 'HI' indicates it is above the range (more than 50% for wood).
Can I measure moisture in concrete?
Yes, the WMM 50 can measure moisture in building materials. Use the appropriate scale (0.2% to 2.0%) and ensure the surface is flat.
How do I clean the device?
Wipe the housing with a dry, soft cloth. Do not use solvents or abrasives. Clean the pins with a damp cloth and dry them immediately.
What does the auto power off feature do?
The device automatically turns off after 5 minutes of inactivity to save battery life. Press any button to restart.
Is the moisture meter calibrated?
Yes, the WMM 50 is factory-calibrated. For most applications, no recalibration is needed. However, periodic verification with a known standard is recommended.
Can I measure moisture in live electrical wires?
No, never use the moisture meter on live wires. The device is not insulated for high voltage. Always ensure the surface is de-energized before measuring.
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