SPECIFICATIONS
IRT Distance to Spot (D:S) Ratio:
50:1
IRT Measurement Range:
-76° to 2732°F (-60° to 1500°C)
IRT Measurement Accuracy:
±1.8°F (1.0°C) from 59° to 95°F (15° to 35°C) @ Tamb of 77°F
(25°C); ±(2% of reading or 3.6°F (2°C)), whichever is greater,
from -27° to 59°F (-33° to 15°C) and from 95° to 2732°F (35° to
1500°C) @ Tamb of 73.4° ± 5.4°F (23° ±3°C)
IRT Emissivity:
Adjustable from 0.1 to 1.0 in 0.01 steps with default of 0.95
“K” Port Measurement Range:
-83° to 2552°F (-64° to 1400°C)
“K” Port Measurement Accuracy:
±(2% of r3.6°F/2°C) or ±5.4°F (3°C), whichever is
greater, @ Tamb of 73.4° ± 10.8°F (23° ±6°C)
IRT/”K” Port Measurement
0.1° (F or C) below 1000°; 1° at and above 1000°
Resolution:
Display Type, Size:
2 in. (51mm) diagonal backlit LCD with 0.5 in. (13mm) high
digits on main readout
Response Time:
< 1 second
Laser Power:
<1mW (Class 2) @ wavelength of 635 to 660nm
Auto Power Off Trigger:
1 minute of front-panel inactivity in Scan (IRT) mode; 12
minutes of front-panel inactivity in PRB (“K” port) mode
Operating Temperature:
32° to 122°F (0° to 50°C)
Dimensions:
7.99 x 7.76 x 1.85 in. (203 x 197 x 47mm)
Weight (including batteries):
13.6 oz. (386g)
Power Source:
(2) “AAA” batteries (not included)
Battery Life:
180 hours (typical) of continuous use with lasers and
backlight off
MAINTENANCE TIPS
The IRT850K cannot make accurate measurements if there is glass or plastic between it and the
target.
Clean the lens of the IR sensor lens (Fig. 1, Callout 8) often—but never use a solvent.
Abrupt temperature changes will cause condensation and possible vapor penetration. Clean the
LCD after the vapor evaporates. Blow off loose particles with clean, compressed air. Gently brush
remaining debris away with a lens hair brush.
To clean the housing, use a moist cotton swab or wet sponge. Avoid excessive amounts of water
and corrosive gas or liquids.
Remove the batteries if you do not expect to use the IRT for an extended period of time (months
or years).
Do not drop or disassemble the instrument or immerse it in water.
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