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2 157 978

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IPC

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Application

99111423/28, 1999-05-31

(24)

Start date

1999-05-31

(22)

Actual filing date

1999-05-31

(45)

Published

2000-10-20

(72)

Inventor

Kazarjan A.A.

(73)

Holder

Tsentral'Nyj Aehrogidrodinamicheskij Institut Im. Prof. N.E. Zhukovskogo

EQUIPMENT TO MANUFACTURE MEMBRANES OF CAPACITIVE PRESSURE PICKUPS AND PROCESS OF MANUFACTURE OF MEMBRANES OF CAPACITIVE PRESSURE PICKUPS Russian patent published in 2000 - IPC

Abstract RU 2157978 C1

FIELD: aviation and mechanical engineering. SUBSTANCE: metal film membrane is stretched over surface of arc-like plate of equipment. Polyamide-acid varnish is applied to surface of film and is endured under stepped change of temperature from 30 to 320 C for the course of 15-20 min. For increase of upper range of pressure measurement and for stabilization of metrological characteristics pickup membrane of polyimide film is subjected to orientation thermal stretching conducted with the use of membrane manufacturing equipment. Film is stretched with force of 3.0-8.0 kg/sq.cm, temperature is raised with rate of 3-5 C/min from 20 to 200 C with endurance time of 5-15 min. EFFECT: enhanced productivity, improved metrological characteristics. 2 cl, 3 dwg

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RU 2 157 978 C1

Authors

Kazarjan A.A.

Dates

2000-10-20—Published

1999-05-31—Filed

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