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2 178 882

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C1

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IPC

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Application

2001104741/28, 2001-02-19

(24)

Start date

2001-02-19

(22)

Actual filing date

2001-02-19

(45)

Published

2002-01-27

(72)

Inventor

Petrochenko M.V.Plotnikov V.P.Shcherbakov G.M.Fedorkov V.G.

(73)

Holder

Institut Fiziko-Tekhnicheskikh Problem

DUST CONCENTRATION METER Russian patent published in 2002 - IPC

Abstract RU 2178882 C1

FIELD: air analysis, measurement of mass concentration of dust in air. SUBSTANCE: dust concentration meter includes radioisotope path comprising air intake tube, pump, source of Beta- radiation, Beta-detector, filter and measurement circuit. Air intake tube is fitted with conduits arranged at angle of less than 90 degrees to radioisotope path. In this case sources of Beta-radiation are placed in conduits and air intake tube is equipped with gate located in body of meter and made in the form of cylinder with grooves which makes it possible to shut off conduits with radiation sources. EFFECT: simplified design of meter and its raised functional reliability. 1 dwg

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RU 2 178 882 C1

Authors

Petrochenko M.V.

Plotnikov V.P.

Shcherbakov G.M.

Fedorkov V.G.

Dates

2002-01-27—Published

2001-02-19—Filed

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