Modular fluid characteristic sensor and additive controller
US5398711A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1994 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Jun 16, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6851
- WIPO fieldControl
- WIPO sectorInstruments
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 mo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.