The Foxboro MIRAN 1A-CVF is a single beam Infrared Spectrometer which measures many compounds that absorb energy in the fingerprint region of the infrared spectrum. Can measure many vapors and gases. Remanufactured to manufacturers specifications. Capable of scanning the infrared spectrum between 2.5 and 14.5 microns. Variable slit width and path-length settings enable measurement of very low concentration of gases,as well as, high concentrations of gas or vapors. Available with digital display and external datalogging. Site Monitoring LLC Services and calibrates these units.