MO290 Datasheet, PDF (7/8 Pages) Extech Instruments Corporation. – Pinless Moisture/Humidity Meter + IR

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
Pinless Moisture
Ext. Pin Moisture
Pinless Depth
RH Measurement
Air Temperature
IR Temp
Range
0 to 99.9
0 to 99.9
Up to 0.75” (19mm)
0 to 10%
11 to 90%
91 to 100%
-20 to 170°F (-29 to 77°C)
-4 to 31°F
32°F
33 to 392°F
-20 to-1°C
0°C
1 to 200°C
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
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
14 to 122°F (-10 to 50°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
MO290 V3.0 03/09