Abstract: A device for the measurement of the amounts of components of loose mixtures comprises a beta radiation source, a backscattering detector, a casing integral with a tribranched hollow chamber, divided at its branching point by a beta radiation-permeable membrane, to form a top branch to contain the sample mixture, and bottom branches leading to the detector inlet and source, respectively, and a lid to close the top branch. The lid is linked to the source to place it in an "on" position on closure. The detector feeds via a comparator, an anticoincidence circuit, whose second input is connected to a tuned generator and whose output feeds a reversible counter via a double frequency divider. Instead a frequency divider may follow the comparator. This may be adjustable with a second frequency divider preceding the second input of the anticoincidence circuit.

Abstract: The invention solves the problem of production of inert gases by way of liquid fuel combustion and diffusion of combustion products with water in a device having small overall dimensions and ensuring to obtain and pump large quantities of gases with the oxygen content well below 2% of the volume as well as minimum content of unburnt fuel particles and, furthermore, devoid of dissociation products. The device consists of a turbo-compressor and tightly connected chambers for oxygen pre-reduction, fuel atomizers, combustion, mixing, after burning and diffusion cooling. The pre-reduction chamber preferably has four flame tubes with fuel injectors and sparking plugs and the chamber of the fuel atomizers in equipped with two circumferential rows of atomizers.