Accession Number:

AD0729705

Title:

An Absolute Method of Piezo-Electric Accelerometer Calibration.

Descriptive Note:

Development rept.,

Corporate Author:

A Q D LABS HAREFIELD (ENGLAND)

Personal Author(s):

• Gregory,H.

Report Date:

1970-02-01

Pagination or Media Count:

43.0

Abstract:

A fundamental method of calibrating accelerometers has been developed which measures dynamic displacement, the essential and difficult parameter, by a pair of differentially coupled solar, silicon photo-cells which are calibrated statically against a length standard. The method employs a null technique, is fast in operation requiring only the adjustment of a precision, variable capacitor and is largely independent of vibrator, driving source waveform. The facility provides calibration in the frequency range 200 Hz to 5000 Hz at acceleration levels up to 50 g with an uncertainty not greater than plus or minus 3. Author

Descriptors:

• *ACCELEROMETERS
• CALIBRATION
• PIEZOELECTRIC TRANSDUCERS
• PIEZOELECTRIC EFFECT
• SOLAR CELLS
• OPTICAL EQUIPMENT
• TEST METHODS
• UNITED KINGDOM

Subject Categories:

• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE