Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture
Patent
1976-06-15
1977-08-30
Queisser, Richard C.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Content or effect of a constituent of a liquid mixture
G01N 2134, G01N 3322
Patent
active
040446042
ABSTRACT:
A portable compact contaminated fuel detector is used with a standard batch sampling technique. The sample is passed through two series filters in a filter holder into a vacuum receptacle. The differential filter opacity is checked in a photocell fixture using a light whose intensity is first adjusted by a potentiometer to a standard level using a milliammeter which is also read to determine each filter opacity. The operating structure is carried on a tiered deck providing different horizontal levels for greater ease and facility in performing tests. The device is combinable with a free water detector, preferably within the enclosure provided by the deck and having an auxiliary movable closure through which the test procedure may be viewed. The free water detector includes a sample holder for filter sample in close proximity to a plurality of comparison standards representative of different water content levels against which the sample may be compared. An ultraviolet light source is positioned to illuminate a filter in the sample holder and comparison standards, the light being such as to cause chemicals in the filter subject to reaction with free water in a fuel sample passed therethrough, as well as the comparison standards, to fluoresce. The intensity of the sample fluorescence is a function of the amount of free water in a sample of standard size and the intensity of the comparison standards is fixed to represent that fluorescence which occurs with known concentrations of free water in a sample of that size.
REFERENCES:
patent: 2889736 (1959-06-01), Borg
patent: 3063289 (1962-11-01), Moul
patent: 3267723 (1966-08-01), Robinson
patent: 3308649 (1967-03-01), Colechia
Analysis and Control of Contamination in Aviation Fuels, In Millipore Publ. pp. 13-14 & 17-18, Jan. 1968.
Queisser Richard C.
Roskos Joseph W.
Telectro-Mek, Inc.
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