G - Physics – 01 – N
Patent
G - Physics
01
N
73/59
G01N 15/00 (2006.01) G01N 15/02 (2006.01) G01N 21/49 (2006.01)
Patent
CA 1102580
INSTRUMENT FOR MEASURING SIZES AND QUANTITY OF PARTICLES IN FLUID MEDIUM ABSTRACT OF THE DISCLOSURE According to the invention, the instrument for measu- ring the sizes and quantity of particles in a fluid medium comprises a light-sensitive device which converts light scattered by particles in a flow of a fluid medium which crosses a beam emitted by a light source, as well as some part of the light of that beam, arriving from an element whose purpose is to simulate a calibrated particle, to electric pulses. The light-sensitive device is connected via a divider, whose purpose is to distribute pulses according to the sizes of particles, to signal inputs of respective threshold devices whose outputs are con- nected to inputs of counters with indicators. The element which simulates a calibrated particle is adapted to perio- dically change, in the course of measurement, the bright- ness of light received by the light-sensitive device. Interposed between the output of the light-sensitive device and reference inputs of the threshold devices is a circuit for converting output pulses of the light-sensi- tive device to direct-current voltage which adjusts the trigger levels of the threshold devices according to the amplitude of a pulse arriving from the element which simulates a calibrated particle.
304876
Berber Viktor A.
Grachev Konstantin A.
Pavlov Vladimir V.
Popov Alexei N.
Sokolov Viktor E.
Berber Viktor A.
Grachev Konstantin A.
Pavlov Vladimir V.
Popov Alexei N.
Sokolov Viktor E.
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