User manual

MO290-EU V3.1 3/10

Auto Power Off

The meter will enter a sleep mode after 30 minutes of inactivity. The meter will emit a warning

beep 15 seconds before shutting down.

To disable the APO feature, press the MODE button when turning the meter ON. The “APO”

icon will not appear, indicating it is disabled.

Specifications

Function Range Accuracy

Pinless Moisture 0 to 99.9 Relative only

Ext. Pin Moisture 0 to 99.9 Relative only

Pinless Depth Up to 0.75” (19mm)

0 to 10% ± 3%RH

11 to 90% ± 2.5%RH

RH Measurement

91 to 100% ± 3%RH

Air Temperature -20 to 170°F (-29 to 77°C)

± 3.6°F (2.0°C)

IR Temp

-4 to 31°F ± 9°F

32°F ± 2°F

33 to 392°F Greater of ±3.5% or ±9°F

-20 to-1°C ± 4.5°C

0°C ± 1°C

1 to 200°C

Greater of ±3.5% or ± 4.5°C

Display 3-digit primary display, 4-digit secondary display

Vapor Pressure 0 to 20.0kPA

Dew Point -22 to 199°F (-30 to 100°C)

Mixing Ratio 0-999GPP (0 to 160g/kg)

Sample Rate 2 per second

Backlight White LED

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

Storage Temperature -14 to 140°F (-30 to 60°C)

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

45%, 104-122°F (40-50°C)

Storage Humidity 90%

Power Supply 9V battery

Battery Life 6-8 weeks (4 hrs/day use), using alkaline batteries

Auto Power Off (APO) After 30 minutes (nominal) inactivity. The APO function can be

disabled by the user.

APO Quiescent Current 50µA maximum

Dimensions 6.5x2.8x1.5’ (165x70x38mm)

Weight 7.4oz (210g)