Fluid aging monitoring device
US5659128A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1996 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Apr 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a device for monitoring the aging of coolants circulating in heat exchange circuits. It includes an element (4) in contact with said liquid to be monitored, an electric element (51) separated from element (4) in contact with the liquid by an insulating volume (6) containing a fluid at a given pressure, said electric element reacting to the corrosion level of the element in contact, and an alarm (8) reacting to a signal variation of the electric element. According to the invention: PA0 the element in contact with the liquid to be monitored consists of at least one pellet (41) made from a material also present in the circuit and in contact with said fluid (3) in the circuit, and PA0 the electric element consists of an element made from a piezoelectric material whose frequency varies with a pressure variation in the insulating volume (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.