Modular fluid characteristic sensor and additive controller

Details Modular fluid characteristic sensor and additive controller Modular fluid characteristic sensor and additive controller

1994-06-16

1995-03-21

Hepperle, Stephen M.

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

137 93, 137343, G05D 2102

Patent

active

053987110

ABSTRACT:
A modular control is provided for sensing characteristics of a fluid and controlling the dispensing of additives into said fluid. The control is contained in a box-like housing having an openable wall which is sealable to a remainder of said housing in a water-tight manner. A plurality of printed circuit boards can be mounted in an interior of said housing. A control circuit is carried on at least one printed circuit board mounted in the housing including a microprocessor controller. At least one probe is provided for immersion in the fluid to detect a characteristic of the fluid. At least one output device is provided for dispensing an additive into the fluid. A signal processing circuit is carried on a printed circuit board mounted in the housing for processing a signal received from the probe. An output control circuit is carried on a printed circuit board mounted in the housing for controlling the output device. A display is mounted on one of the housing walls. An input device for inputting data and control commands is mounted on one of the housing walls. A user can select particular probes, signal conditioning boards, output control boards and output devices to sense one or more characteristics of the fluid and control additive dispensers and other output devices to control the sensed characteristics.

REFERENCES:
patent: 3680070 (1972-07-01), Nystuen
patent: 3765436 (1973-10-01), Dziomba
patent: 4172880 (1979-10-01), Tzavos
patent: 4460008 (1984-07-01), O'Leary
patent: 4466072 (1984-08-01), Kaufmann
patent: 4471898 (1984-09-01), Parker
patent: 4571092 (1986-02-01), Switall
patent: 4800238 (1989-01-01), Gesvent
patent: 4884715 (1989-12-01), Pohlmann

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