Operation - Extech Instruments MO257 User Manual

Pinless moisture meter
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Operation

Pinless Moisture Measurements
1.
Press the power
2.
As described below, you must calibrate the meter before first use.
3.
To calibrate, press the MEAS button immediately after powering on the meter. The display will
audibly beep and visually flash the CAL display icon. Keep the measurement sensor at least 3
to 4" (8 to 10 cm) from any object during calibration.
4.
When the calibration is complete the beeping and flashing stop. The calibration reading must
not exceed 0.5. If so, re-calibrate ensuring that hands or other objects are kept clear of the
button to turn the meter on.
4
MO257-EU-EN -V1.2 04/12

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