Omega Vehicle Security OS642F - Manual (Page 9)

7
OPERATION
1. When the power is off, pressing the MEAS button turns on the power.
2. Use " " button to select turn on or turn off the display Back-Light.
3. Point the lens at the object whose temperature is to be measured.
4. Press the MEAS button. Measurement is performed as long as the MEAS
button is kept pressed.
5. Referring to the spot size figure, aim the infrared beam the object whose
temperature is to be measured.
NOTE: Although the field of measurement (or Field of View) and the spot almost
coincide, actually the field of measurement corresponds to the diameter for
90% optical response. The object whose temperature is to be measured needs
to be larger than the measurement diameter (spot of size) by an adequate
margin at least 1.5 to 2 times larger.
6. Read the diaplay.