QUANTITATIVE ANALYSIS OF FLUID CONSTITUENTS

摘要

For continuously and quantitatively determining one or more constituents of a fluid a given amount thereof is passed through a measuring cell which has an adjustment inertia of exponential nature. By alternately passing a reference fluid and the fluid to be measured through the measuring cell at a rate at which only part of the adjustment characteristic is used a sawtooth measuring signal is obtained at the measuring cell which by electronic processing and filtering rapidly provides information about the amount to be determined of the said constituents. The resulting signal may be used to control a variable calibrating system or it may, because continuous calibrating is also found to be possible, be used for instantaneous accurate indication of the measuring value.