Extech Instruments MO55 User Manual

MO55‐en‐GB_V1.002/16
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Description
MeterDescription
1. Protectivecoverandpin‐modeself‐testcircuit
2. Measurementpins
3. LCDDisplay
4. Powerbutton
5. Mode(M)Pin/PinlessandMaterialselection
6. DisplayLock/Beeperbutton
7. Internalsensor(rear)
8. Batterycompartment(rear)
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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. DisplayLockmode
8. Batterystatusicon
ButtonDescription
Button Buttonname Description
 PowerON‐OFF PressandholdtoswitchthemeterONorOFF
M Mode(MaterialSelect)
SelectMaterial(Wood,BuildingMaterials)for
PinorPinlessmode
/  DisplayLock/Beepercontrol
Shortpresslocksreadingonthedisplay
LongpresstogglestheBeeperON/OFF
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Extech Instruments MO55 Specifications

Measurement Specifications

measurement depth pinless mode	< 25mm (1 in.)
measurement ranges pin mode	5.0~50.0% (wood), 1.4~33.0% (building materials)
measurement ranges pinless mode	0.0~99.9% (for wood and building materials)
resolution	0.1%
accuracy pin mode	± (3% + 5 digits) for ambient conditions 22°C to 25°C (72°F to 77°F)

Power

power supply	One (1) 9V Battery
auto power off	After approx. two (2) minutes
consumption	< 40mA

Operating Environment

operating conditions	5~45°C (41~113°F); 80%RH max.
storage conditions	0~50°C (32~122°F); 85%RH max.
low battery indication	Battery status icon appears empty or flashing

Weight and Dimensions

dimensions	170 x 65 x 30mm (6.7 x 2.6 x 1.2")
weight	120g (4.2 oz.) without battery