Extech Instruments MO257 Manuale utente

User's Guide

Pinless Moisture Meter

Model MO257

MO257-EU-EN -V1.2 04/12

Introduction

Congratulations on your purchase of the Extech MO257 Pinless Moisture Meter. The pinless

moisture sensor monitors the moisture in wood and other building materials without causing surface

damage. High frequency sensing technology allows the meter to take non-invasive moisture

measurements. User programmable alarms alert the user if moisture measurements exceed alarm

set-points. This meter is shipped fully tested and calibrated and, with proper use, will provide years of

reliable service.

Meter Description

1. Measurement sensor

2. Power ON-OFF button

3. LCD display

4. Measure (MEAS) button

5. UP and BACKLIGHT button

6. SET button

7. DOWN button

Battery compartment located on rear of unit

LCD Display

1. Low Battery icon

2. Main LCD display

3. MAX reading

4. MIN reading

5. HOLD function

6. Measurement alert

7. MAX mode icon

8. MIN mode icon

MO257-EU-EN -V1.2 04/12

Battery Replacement

1. Turn off the meter

2. Remove the Philips head screw located on the rear of the unit

3. Lift off the rear battery cover

4. Replace the three (3) ‘AAA’ 1.5V batteries

5. Secure the rear battery cover

You, as the end user, are legally bound (EU Battery ordinance) to return all used

batteries, disposal in the household garbage is prohibited! You can hand over your

used batteries / accumulators at collection points in your community or wherever batteries

/ accumulators are sold!

Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the

end of its lifecycle

MO257-EU-EN -V1.2 04/12

Operation

Pinless Moisture Measurements

1. Press the power button to turn the meter on.

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

MO257-EU-EN -V1.2 04/12

Auto Power Off

To conserve battery energy, the meter will enter a sleep mode after approx. 30 minutes of inactivity.

Press the power button to wake the meter.

Backlit LCD

Press the up/backlight button to switch the backlighting ON or OFF.

Specifications

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Moisture Range 0.0 to 100.0 Relative only

Measurement Depth 20 to 40mm (0.79 to 1.57”)

Display type Backlit LCD

Display digits Three (3) numeric displays; each displaying from 0.0 to 100.0

Display icons HOLD, DRY, RISK, WET, MIN, MAX and low battery icon

Operating Temperature 4 to 43°C (40 to 110°F)

Operating Humidity 90%, 0-30°C (32-86°F), 75%, 30-40°C (86-104°F),

45%, 40-50°C (104-122°F)

Power Supply Three (3) 1.5V ‘AAA’ batteries

Auto Power Off (APO) After 30 minutes of inactivity

Dimensions 235 x 63 x 28mm (9.2 x 2.5 x 1.1”)

Weight 218g (7.7oz)

Moisture Comparison Table (typical)

Material Display units Moisture status

< 30 DRY

30 - 60 RISK

Gypsum

> 60 WET

< 25 DRY

25 - 50 RISK

Cement

> 50 WET

< 50 DRY

50 - 80 RISK

Wood

> 80 WET

HT30-EU-EN-V3.2--9/11

Phone: 01235 838 555

E-mail: cs@airconcern.co.uk

web: www.airconcern.co.uk

Air Concern Ltd, Building 173 Curie Avenue Harwell Didcot, Oxfordshire OX11 0QG

more info for Extech MO257

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