The H3D P series is a collimated directional gamma-ray spectrometer. The P100 and P100S were developed to localize and quantify gamma-ray sources in the presence of strong gamma-ray sources.
The P Series has a tungsten collimator to help focus on the source of interest, with the same imaging and spectral performace of the H100.
One of the main applications of the P Series is waste characterization. The P series is capable of quantitative analysis of radiation in pipes and ducts.
The P100S is a spectrometer-only model of the P series. The P100 is capable of producing radiation images.