G - Physics – 05 – D
Patent
G - Physics
05
D
G05D 11/13 (2006.01) A62C 5/00 (2006.01) A62C 5/02 (2006.01)
Patent
CA 2103852
A system and method for producing and maintaining a predetermined proportionate mixture of two fluids, such as water and foam concentrate, in accordance with conductivity measurements of the fluids. A set point is established which is representative of the conductivity of the predetermined proportionate mixture. The conductivity of the mixture is measured and compared with the set point by conductivity probes and a microprocessor. A control valve is continuously adjusted to maintain the predetermined proportionate mixture in response to control signals from the microprocessor in accordance with the comparisons of the conductivity values.
Un processus pour la composition et le maintien d'une mixture à parts proportionnelles prédéterminées de deux liquides, (concentré d'eau et de styromousse, par exemple), suivant les mesures de conductivité des liquides. Un point de consigne est établi qui représente la conductivité de la mixture proportionnelle prédéterminée. La conductivité du mélange est mesurée et ensuite comparée au point de consigne, par le biais de sondes de conductivité et d'un microprocesseur. Un régulateur de débit s'ajuste continuellement, assurant le maintien de la composition en réponse à des signaux provenant du microprocesseur, selon les comparaisons des valeurs de conductivité relevées.
Fetherstonhaugh & Co.
National Foam Inc.
LandOfFree
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