Accession Number:

ADD010392

Title:

An apparatus for A Method of Measuring the Intrinsic Time Constant of Liquids.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1983-06-14

Pagination or Media Count:

18.0

Abstract:

The intrinsic time constant tau of liquids is measured directly by using the apparatus of the present invention termed a taumeter . The taumeter impresses a predetermined voltage, level between a pair of electrode immersed in the liquid to be measured. The taumeter then measures the time it takes for the foregoing voltage to decay from a predetermined value VA to a predetermined value VB. Comparator logic produces a gate pulse having a leading edge at a time TA corresponding to the occurrance of the predetermined voltage VA and a trailing edge at a time TB corresponding to the occurrance of the predetermined voltage VB. The gate pulse is used to gate a system counter which counts the zero crossings of a very accurate system clock to determine the intrinsic time constant of the liquid. The foregoing pulsing is repeated as determined by a duty cycle generator. Author

Subject Categories:

  • Physical Chemistry
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE