This model has an optical configuration of robust aerospace-quality, double coated Zinc Selenide lenses per Military Specification MIL-C-13508. It measures in the spectral pass band of 8 < Wavelengths < 14 Microns.

Field of Views of 4° or 15° are available. The response time of the instruments is less than 0.10 second. Emissivity is settable from 0.2 to 0.98 or can be preset at end user’s request.

Rechargeable Nickel Cadmium batteries provide the power source. The standard output signal is RS-232C and the optional signal is analog millivolt (10mV/ °C).

The Model 100.3ZL is used mainly for measurements in the natural environment and for research studies.