Specifications - Extech Instruments IR250 User Manual

Field of View
As the distance from the object increases, the spot size of the area measured becomes
larger. The meter's field of view is 6:1; in other words if the meter is 6 inches from the
target (spot), the diameter of the target must be at least 1 inch. Note that measurements
should normally be made as close as possible to the device under test. The meter can
measure from moderate distances but the measurement may be affected by external
sources of light. In addition, the spot size may be so large that it encompasses surface
areas not intended to be measured.

Specifications

Range
Resolution
Accuracy
Emissivity
Field of View
Laser pointer
IR Spectral response
Display
Display update rate
Operating Temperature
Operating Humidity
Power Supply
Automatic Power Off
Weight
Dimensions
12
6
2mm
4mm
12mm
24mm
-4 to 500°F (-20 to 260°C)
0.1°
-4 to 20°F (-20°C to -7°C): ±7.5°F (4°C)
20 to 500°F (-7°C to 260°C): ±3% of reading or ±5°F/2.5°C
(whichever is greater)
Note: Accuracy is specified for an ambient temperature range
of 64 to 82°F (18 to 28°C)
Fixed 0.95
D/S = Approx. 6:1 ratio (D = distance; S = spot or target)
Class 2(II) laser < 1mW power; Wavelength is 630 to 670nm
8 to 14 μm
Backlit LCD display with function indicators
Less than 1 second
32°F to 122°F (0°C to 50°C)
80% Relative Humidity max.
9V battery
Meter shuts off automatically after 8 seconds
6.3 oz (180g)
3.2 x 1.6 x 6.3" (82x41x160mm)
5
24
8mm
48mm
IR250 V2.0 6/09