Thermo Fisher Scientific Inc. Manufactures Personnel Gamma Portal Monitor. Thermo Fisher Scientific Inc. Also manufactures various types of scientific instruments. The Personnel Gamma Portal Monitor, model P12, is used for personnel monitoring. The Personnel Gamma Portal Monitor is PC controlled with embedded Windows XP operating system. The Personnel Gamma Portal Monitor has five modes of operation with two types of high level alarm. This Monitor has large touch-screen color LCD display with Viewpoint compatibility. This Monitor has automated calibration and checking routines.