Accession Number : ADD006411

Title :   Apparatus and Method for Determining Electrical Conductivity of Water Vapor.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Carlon ,Hugh R ; Pritt,Rex M

Report Date : 09 Jul 1979

Pagination or Media Count : 14

Abstract : An apparatus and method are disclosed for measuring the conductivity or number of water ion clusters present in a moist air environment. A test chamber is utilized for operatively simultaneously holding a 'dummy' reference cell and a 'large' conductivity cell having substantially the same leakage resistance. The cells are designed to have 'cell factor' ratios substantially different from each other. A D.C. power source with an in series vacuum-tube voltmeter is used to alternately measure the voltage drop of each cell under the similar variable ambient conditions. The conductivity or number of ion cluster present in the test environment is determined by a calculation using voltage compensated values and by graphical extrapolation. (Author)

Descriptors :   *Patent applications, *Laboratory equipment, *Electrical conductivity, *Water vapor, Measurement, Ions, Clustering, Water, Absorption spectra, Infrared spectra

Subject Categories : Test Facilities, Equipment and Methods
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE