Accession Number : AD0164436

Title :   Light Pressure Operated Microbalance System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Dybwad,Jens P. ; Alexander,Winser E. ; Zinnow,Karl P.

Report Date : 21 AUG 1973

Pagination or Media Count : 5

Abstract : This invention relates to microbalances and more particularly to an electronic read out system for undamped swinging balances. The invention enhances the resolution and accuracy of a balance and is achieved by automatically sensing the null level crossings of an undamped swinging balance and measuring the time intervals between the null crossings. The time intervals of successive half periods are then compared and processed to produce an off-balance signal in relation to the sample weight changes on the balance.

Descriptors :   *Patents, Display systems, Beams(Radiation), Light, Resolution, Balances, Accuracy, Sensitivity, Data processing

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE