Apparatus for monitoring operation of heating and cooling systems
US5684717A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1996 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Mar 14, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Apparatus is provided for monitoring operation of a heating and/or cooling system. The apparatus includes a programmed first processor for processing data relating to selected system operating conditions and for transmitting coded data signals indicative thereof, and a portable display module having an electrical conduit for electrically connecting the module to the first processor to provide one-way electrical communication therebetween. The module further includes a programmed second processor for processing the data signals transmitted by the first processor and a display device which is controlled by the second processor to provide a human readable indication of selected system operating conditions, including the current mode of operation of the system and any detected failure conditions. The first processor includes a memory for storing past system failure conditions. The apparatus includes a memory operable switch for inputting a signal to the first processor. In response to the input signal, the first processor transmits a coded data signal indicative of the last known system failure condition, even if such failure con&ion is no longer present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.