Extech Instruments MO220 User Manual page 2

Introduction
Congratulations on your purchase of the Extech MO220 Moisture Meter. This instrument is a
conductivity moisture meter specifically designed for the wood industry.
The instrument has eight calibration scales, enabling the user to take accurate moisture
measurements in 170 wood species. Moisture measurements can be taken using the integral pin
electrodes, or using the heavy duty moisture probe.
When used with the temperature probe, the moisture measurements are automatically corrected
with respect to temperature. This meter is shipped fully tested and calibrated and, with proper use,
will provide years of reliable service.
Description
Meter Description
1. Measurement pins
2. Low battery icon
3. LCD measurement reading
4. Wood group designators
5. Units of measure
6. External moisture sensor input
7. Remote temperature probe jack
8. Temperature units button
9. Wood group letter selector button
10. Power ON-OFF button
Note that the battery compartment is located on the
rear of the instrument.
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