How It Works; Field Of View; Distance & Spot Size - PeakTech 4980 Bedienungsanleitung

You can obtain further information about the Battery Regulations
from the Bundesministerium
Reaktorsicherheit
Conservation and Reactor Safety).

8. How it Works

Infrared thermometers measure the surface temperature of an
object. The unit´s optics sense emitted, reflected and transmitted
energy, which is collected and focused onto a detector. The unit´s
electronics translate the information into a temperature reading
which is displayed on the unit. In units with a laser, the laser is used
for aiming purposes only.

8.1. Field of View

Make sure that the target is larger than the unit´s spot size. The
smaller the target, the closer you should be to it. When accuracy is
critical, make sure the target is at least twice as large as the spot
size.
8.2. Distance & Spot Size
As the distance (D) from the object increases, the spot size (S) of
the area measured by the unit becomes larger. See Fig. 2
Batteries, which contain harmful substances, are
marked with the symbol of a crossed-out waste
bin, similar to the illustration shown left. Under
the waste bin symbol is the chemical symbol for
the harmful substance, e.g. „Cd" for cadmium,
„Pb" stands for lead and „Hg" for mercury.
(Federal Ministry
für Umwelt,
of
-33-
Naturschutz
Environment,
und
Nature