Field Of View - Urrea UD20 Manual De Usuario

E N G L I S H
12. °C / °F Switchable.
13. Laser ON/OFF.
14. 9V battery.
1
4.3 °C / °F and battery change
The units is powered by 9V battery and displays temperatures
in either °C / °F . The user has to replace the battery when the
battery voltage drops below the voltage for reliable operation
and at the same time the low battery symbol
To change the 9V battery, pull open the unit's handle by using
the finger. Change the 9V battery with a new one and push the
battery cover back.
5. TECHINIQUES OF INFRARED
THERMOMETER

5.1 Field of view

(FOV) ratio=distance to diameter (DS) ratio.
The field of view is the angle of vision at which the instrument
operates, and is determined by the optics of the unit. The
FOV is the ratio of the distance from the target to the target
diameter. The smaller the target, the closer you should be to it.
When the target diameters is small, it is important to bring the
thermometer closer to the target to insure that only the target
is measured, excluding the surroundigs.
10
2
6
7
3
4
5
8
9
12
10
13
11
14
will appear.