Specifications - Extech Instruments MO290 User Manual

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

Range
Function
0 to 99.9
Pinless Moisture
0 to 99.9
Ext. Pin Moisture
Up to 0.75" (19mm)
Pinless Depth
0 to 10%
RH Measurement
11 to 90%
91 to 100%
-20 to 170°F (-29 to 77°C)
Air Temperature
-4 to 31°F
IR Temp
32°F
33 to 392°F
-20 to-1°C
0°C
1 to 200°C
Display
Vapor Pressure
Dew Point
Mixing Ratio
Sample Rate
Backlight
Operating Temperature
Storage Temperature
Operating Humidity
Storage Humidity
Power Supply
Battery Life
Auto Power Off (APO)
APO Quiescent Current
Dimensions
Weight
3-digit primary display, 4-digit secondary display
0 to 20.0kPA
-22 to 199°F (-30 to 100°C)
0-999GPP (0 to 160g/kg)
2 per second
White LED
40 to 110°F (4 to 43°C)
-14 to 140°F (-30 to 60°C)
90%, 32-86°F (0-30°C), 75%, 86-104°F (30-40°C),
45%, 104-122°F (40-50°C)
90%
9V battery
6-8 weeks (4 hrs/day use), using alkaline batteries
After 30 minutes (nominal) inactivity. The APO function can be
disabled by the user.
50µA maximum
6.5x2.8x1.5' (165x70x38mm)
7.4oz (210g)
7
Accuracy
Relative only
Relative only
± 3%RH
± 2.5%RH
± 3%RH
± 3.6°F (2.0°C)
± 9°F
± 2°F
Greater of ±3.5% or ±9°F
± 4.5°C
± 1°C
Greater of ±3.5% or ± 4.5°C
MO290 V3.1 03/10