Pressure transducer calibration

Details Pressure transducer calibration Pressure transducer calibration

1977-03-18

1978-04-04

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73167, G01L 2700

Patent

active

040819884

ABSTRACT:
A calibration arrangement in combination with ammunition testing apparatus comprising an elongated test barrel and a piezoelectric transducer mounted in the barrel and having a contoured end surface in operative contact with the outer wall surface of a cartridge to be tested. The transducer converts pressure changes into electrical signals which are translated through an amplifier to a voltmeter for readout. The calibration arrangement includes a pressure tube element adapted to fit in the test barrel with one end in pressure-tight relation with the interior of an empty cartridge casing held in the test barrel and with the other end of the tube adjacent the opposite end of the test barrel. The tube is held by a retaining assembly against lengthwise movement in the test barrel. A conduit connects a source of known hydraulic pressure to the tube for introducing known calibration pressure to the interior of the cartridge casing. As a result, both test firing and calibration can be performed in the same test barrel.

REFERENCES:
patent: 3854331 (1974-12-01), Bateman, Jr.
patent: 3886792 (1975-06-01), Change

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