General IRT3 Mode D'emploi page 6

IRT3 Manual FINAL-EFS_050815.qxp_awb 5/8/15 1:10 PM Page 6
For example, when using the IRT3 to measure the
temperature of a motor with an area of 1 ft
measurement distance would be 4 ft. To eliminate error, the
IRT must be moved close enough so the motor is the only
object in the target area (see Fig. 4 below).
Fig. 4. Measuring a motor's temperature from the wrong
(top) and right (bottom) distance.
SPECIFICATIONS
Measurement Range/Resolution
Measurement Accuracy
Measurement Repeatability
Distance-To-Spot (D:S) Ratio
Emissivity
Response Time
Display Type/Size
Laser Class/Power/Wavelength
6
2
, the optimal
-22° to 482°F (-30° to 250°C)/0.1°
±3.6°F (2°C) or 2% of reading
(whichever is greater) above 32°F
(0°C); ±5.4°F (3°C) or 2% of reading
(whichever is greater) below 32°F
1% of reading or 1°C
4:1
Fixed at 0.95
500 msec for 95% response
LCD/1.0 (H) x 0.7 (W) in.
(25 x 18mm)
Class 2/<1mW/655nm