USER GUIDE Compact Moisture Meter Model MO50
Introduction Thank you for selecting the Extech MO50 Moisture Meter. The compact MO50 takes quick Moisture level reference measurements (in percent %) on wood and building materials. The MO50 is simple to operate and offers measurement digits, audible tones and ‘moisture drop’ icons to indicate moisture level content. The MO50 is ideal for building restoration projects and applications where moisture detection on floors and under carpets is critical.
Description 1 Meter Description 1. Measurement pins 2. LCD Display 3. Power button 4. Material Select button 5. Display Lock/Beeper button Notes: 2 Battery compartment on rear of meter Protective pin cover not shown 4 5 3 Fig. 1 Meter Description Display Description 1. Moisture Drop icons (1 droplet for low moisture content, 2 for medium, and 3 for high) 2. Wood mode 3. Building Material mode 4. Beeper active icon 5. Moisture reading digits 6. Percent moisture unit (relative) 7.
Button Description Button Button name Description Power ON‐OFF Press and hold to switch the meter ON or OFF / Material Select Select Material Group (Wood, Building Materials) / Display Lock / Beeper control Short press locks reading on the display Long press toggles the Beeper ON/OFF Operation CAUTION: The electrode measurement pins are extremely sharp. Use care when handling this instrument. Cover the pins with the protective cap when the instrument is not in use. Operating Steps 1.
Beeper ON/OFF The beeper defaults to ON. To switch the beeper OFF, press and hold the Display Lock/Audible . When the beeper is active the audio display icon will be visible. Beeper button Self Test cap Turn on the MO50 meter and set the meter to Wood or Building and press the electrode pins to the contacts on the top of the Protective/Test cap. Expected results: Wood: 17.0 to 19.0% Building: 15.5 to 17.5% If the meter reads outside of these measurements replace the batteries.
Specifications Display Measurement type Measurement principle Measurement indication Measurement ranges Resolution Accuracy Electrode pin length Electrode pin type Auto Power OFF Power supply Consumption Low Battery indication Operating conditions Storage conditions Dimensions Weight LCD with multi‐function indicators Relative Moisture Content (%) Electrical resistance Digital, Moisture Droplet icons (1, 2, or 3 droplets) and audible tone with 8 levels of intensity indicating low to high moisture readings
