Fluid handling – Processes
Patent
1979-12-12
1981-01-13
Schwadron, Martin P.
Fluid handling
Processes
73304R, 137392, 307118, 340620, 361178, 364509, 417 36, 417 44, F17D 300, F04B 4906, G01F 2300
Patent
active
042443857
ABSTRACT:
An improved system for sensing and controlling the level of fluent material in two reservoirs when material is transferred from one reservoir to the other. In electrically conducting materials, levels are sensed by direct current conduction between electrode pairs placed in each reservoir at desired "high" and "low" control levels which send D.C. digital logic sensing signals from these four sensors over connecting wires to four high resistance input circuits of a digital signal processing circuit; in electrically nonconducting materials, levels are sensed by suitable transducers which upon immersion send D.C. digital logic sensing signals to the digital signal processing circuit. The digital signal processing circuit receives the multiple sensor signals and provides a digital output signal or absence thereof, depending on the relative state and sequence of the sensing signals and transmits this digital output signal to the input circuit of a solid state relay, the output circuit of which controls the power of flow control means in a manner to maintain desired levels of fluent material in both reservoirs.
REFERENCES:
patent: 3131335 (1964-04-01), Berglund et al.
patent: 3495214 (1970-02-01), Wishart
patent: 3540027 (1970-11-01), Rauth et al.
patent: 3671142 (1972-06-01), Calabrese
patent: 3727182 (1973-04-01), Snyder
patent: 3790936 (1974-02-01), Knoll
patent: 4112318 (1978-09-01), Hamelink
patent: 4165509 (1979-08-01), Betts et al.
patent: 4171932 (1979-10-01), Miller
patent: 4182363 (1980-01-01), Fuller
Schwadron Martin P.
Walton G. L.
LandOfFree
Fluent material level control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluent material level control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluent material level control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2227063