Non contact temperature measurement specialist Land Instruments International is seeking a patent for a technique that ensures the continuous accuracy of its FTI Mv radiometric thermal imager when used for medical purposes.
The FTI Mv's infrared detector array is combined with two high-stability, P100i blackbody temperature reference sources, so that the imager can be calibrated continuously, on-line to provide reliable temperature measurement at any point in the scene being viewed. Accuracy is improved to +/-0.5degC, with repeatable temperature measurements down to +/-0.2degC - both traceable to the ITS-90 National Standard.
This thermographic calibration method eliminates 'cold junction' effects caused by variations in the detector temperature relative to the target.