MB35 "Self Contained" Pyrometer
Pyrometer Series Metis MB35 with Temperature Range starting at 35°C, utilizes a lead selenide detector with filtered spectral response of 2 - 5 μm. Applications include Co2 laser heating/welding of metals, Ceramics, composites and temperature measurement of metal surfaces above 35°C. The emissivity of metallic surfaces
decrease with shorter wavelengths, therefore offer much better performance than pyrometers with similar low scale temperature ranges, but with longer wavelength e.g. 8 - 14μm. Other major advantages are smaller spot sizes, fast response times and digital signal processing which provides for very wide temperature ranges.
These product specifications serve for many other applications as well. Optical and electronic parts are housed in a rugged IP65, extruded aluminium casting.
Lenses:
The infrared energy radiated by the target is centered via focusable or fixed focus lenses directly on the detector. The focusing feature gives you control of the cone of vision and offers the possibility to measure either a small spot (focused) or the average of a bigger spot (out of focus condition). Fixed focus, larger diameter lenses, collect more infrared energy and therefore result in even smaller spot sizes and lower zero scale temperature.
The lenses are made of calcium fluoride (CaF2), which are highly transparent in the 2-5 μm spectral region. If additional windows are used, they must offer similar optical characteristics. |
