Viscosity based tank level and flow control systems

Details Viscosity based tank level and flow control systems Viscosity based tank level and flow control systems

1993-01-26

1994-05-03

Drodge, Joseph W.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

162 29, 162238, 162252, 210 86, 210138, 210521, 210803, B01D 2132, D21C 1100

Patent

active

053085043

ABSTRACT:
Tank level and flow control systems wherein the presence of materials or solutions of known viscosity ranges in a tank or flow stream is detected by using viscosity detection devices. Automatic control devices are also incorporated into these systems to react to one or more signals from the viscosity detection devices and to control the operation of a pump and appropriate valves. One embodiment of the tank level and control system includes a viscosity detection system using a vertical three probe arrangement to report relative viscosities of materials in a storage tank, at predetermined levels in the tank, to the control device.

REFERENCES:
patent: 3401110 (1968-09-01), Floyd et al.
patent: 3530042 (1970-09-01), Graybill et al.
patent: 4931175 (1990-06-01), Krofta
patent: 5137643 (1992-08-01), Keyes et al.
FCI Fluid Components, Inc. Brochure, Document No. 11164-B-"Liquid Level/Interface Detection" (Temperature Detectors).
Dynatrol.TM. Level Switch For Bulk Solids, Automation Products, Inc., Bulletin No. DJ69, (Model No. CL-10DJ).

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