Fluke 56X - Manual (Page 24)

56x
Users Manual
16
How the Thermometers Work
Infrared thermometers measure the surface temperature of an object. The
thermometer’s optics sense emitted, reflected, and transmitted energy, which is
collected and focused onto a detector. The unit’s electronics translate the signal
into a temperature reading which the unit displays (see Figure 5).
Reflected energy
Emitted
Energy
Transmitted
energy
Target
eyl002f.eps
Figure 5. How the Thermometer Works
Operating the Thermometer
Temperature Measurement
To measure temperature, point the thermometer at an object and pull the trigger.
You can use the laser pointer to help aim the thermometer. You may also insert
the K-type thermocouple probe for contact measurement. Be sure to consider
distance-to-spot size ratio and field of view (see “Distance and Spot Size” and
“Field of View”). The temperature appears on the display.
Note
The laser is used for aiming purposes only and is not related to
temperature measurement.
The thermometer features an auto off function that automatically powers down
the thermometer after 20 seconds of inactivity. To turn the thermometer on, pull
the trigger.