How The Thermometers Work; Operating The Thermometer; Temperature Measurement - Fluke 568 User Manual

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Users Manual

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).

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.
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.
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Figure 5. How the Thermometer Works
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