Extech Instruments 470 User Manual
Page 15
V5.0 5/04
15
NON-CONTACT TEMPERATURE MEASUREMENTS
1. Set the function switch to the red IR Non-Contact ºF or ºC
position.
2. Point the meter at the surface to be measured.
3. If needed, press the red IR Laser Pointer button to locate the
exact spot being measured.
4. The area of the surface to be measured must be larger than the
spot size as determined by the distance to spot size
specification.
5. Read the temperature in the display.
(2.5cm) (5cm)
(10cm)
(20cm)
(40cm)
(80cm)
Diameter of Spot
Distance to Object
WARNING: Do not directly view or direct the laser pointer
at an eye. Low power visible lasers do not normally present a
hazard, but may present some potential for hazard if viewed
directly for extended periods of time.
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