MO290 V3.1 03/10
7
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)
RH Measurement
0 to 10%
± 3%RH
11 to 90%
± 2.5%RH
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
40 to 110°F (4 to 43°C)
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)
