Technical Description; System Design / Principle Of Operation; Fibre Optics; Vario Optis - KLEIBER 217 R - LWL Betriebsanleitung

5 Technical Description

5 Technical Description

5.1 System Design / Principle of Operation

Figure 1 shows the basic structure of the pyrometer with fibre cable. The infrared radiation coming from the
object is collected and focused by an fibre optic, that main parts are a lens and a aperture. Via a fibre optic the
infrared radiation is tranmitted to the pyrometer.
The basic parts of a pyrometer are the lens, aperture, filter detector, and the signal processing unit. The
infrared radiation coming in from the fibre optic is gathered by the lens. The aperture blocks unwanted rays at
the edges.
The filter permits only the desired spectral range to enter. The rays then pass through to the detector which
transforms the infrared radiation into electric signals. These signals are then linearised in the signal processing
unit and changed into a standard output signal which can then be read in the display, and be used for process
control.
The operating elements are located at the front of the panel instrument case, the connections / interfaces are
located at the back (see Operating and display elements (section 5.3) at page 9).
Figure 1: Structure of the pyrometer

5.2 Fibre Optics

The pyrometer is equipped with fibre optics and depending on the application (measuring distance, measuring
field diameter, etc.) the pyrometer can be used with a vario optic head or a fixed optical head.

5.2.1 Vario optis

The Vario optic can be adjusted to the required measuring distance and allows small measuring fields for
various distances to the object being measured. The object being measured can be at an arbitrary distance,
but must be at least as large as the measuring field at that distance (see Setting the optic (section 7.1) at page
13).
Figure 2: Fibre optic - optical head (vario optics)
8 KLEIBER 217 R - LWL