Measuring and testing – Gas content of a liquid or a solid – By vibration
Patent
1974-09-13
1976-03-23
Queisser, Richard C.
Measuring and testing
Gas content of a liquid or a solid
By vibration
73 614, G01N 2502
Patent
active
039452433
ABSTRACT:
A method and apparatus for the continuous automatic analysis of the filterability point of liquid substances such as Diesel oil. The Diesel oil flows through a measuring circuit at a constant flow rate by means of a volumetric pump. The temperature in the measuring circuit is maintained sufficiently below the assumed filterability point of the substance. A heating element is provided along the flow path of the Diesel oil for melting microcrystals which form on the filter in the filtering chamber of the measuring circuit, or alternatively, in a tube of the measuring circuit. A differential pressure responsive device with a switch is connected between the inlet and outlet of the measuring circuit for detecting the pressure drop across the circuit. The switch of the device is actuated in response to the pressure drop falling below a predetermined level which is caused by a build-up of micro-crystals, for turning on the heating element and melting the micro-crystals. The heating element is then automatically turned off when all the micro-crystals have melted by the corresponding increase in pressure drop across the measuring circuit in response to which the device actuates the switch once again back to its initial position.
REFERENCES:
patent: 2591084 (1952-04-01), Martin
patent: 2750433 (1956-06-01), Tourneau et al.
patent: 2997874 (1961-08-01), Billuris et al.
patent: 3143876 (1964-08-01), Wallgren
patent: 3213668 (1965-10-01), Thompson
patent: 3577765 (1971-05-01), Bertoglio et al.
patent: 3872710 (1975-03-01), Louvel
Queisser Richard C.
Roskos Joseph W.
Societe Anonyme dite: Antar Petroles de l'Atlantique
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