Chemical controller system and method
US11687103B2 · kind B2 · utility
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26References
20Claims
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Assignee
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Key dates
| Filing date | Apr 27, 2021 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Aug 12, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/07
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of controlling an output relay of a chemical controller is disclosed. The output relay is coupled to a pump configured to introduce at least one chemical into the aquatic application. The chemical controller controls the operation of the pump using the output relay. The method includes the step of utilizing a watchdog timer circuit to determine that a processor has failed to send a reset signal to the watchdog timer circuit before a timer of the watchdog timer circuit reaches zero. The method further includes the step of outputting a processor fault signal from the watchdog timer circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.