Accession Number : ADD018533

Title :   Apparatus and Method for Calibration of Sensing Transducers

Descriptive Note : Patent, Filed 16 Jul 96, patented 1 Jul 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Gabrielson, Thomas B

Report Date : 01 Jul 1997

Pagination or Media Count : 13

Abstract : Reciprocity calibration of electromechanical transducers is carried out with three transducers, which are secured to a mass mounted for oscillation as a pendulum. A first transducer is driven and the electrical output of a second transducer is measured. A third transducer, which must be a linear, reciprocal device, is driven and the electrical output of the second transducer is measured. The first transducer is driven while the electrical output of the third transducer is measured. The sensitivities of the transducers can be deduced from the electrical inputs and the measured electrical outputs by taking advantage of reciprocity. The transducers may be mounted to the pendulum mass two at a time, or alternatively, all three transducers may be fixed to the pendulum mass.

Descriptors :   *TRANSDUCERS, *PATENTS, MASS, ELECTROMECHANICAL DEVICES, CALIBRATION, ELECTRICAL MEASUREMENT, PENDULUMS

Subject Categories : Electrical and Electronic Equipment
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE