Resistive water sensor for hot tub spa heating element
AssigneeGecko Electronique, Inc.
InventorsMichel Authier, Benoit Laflamme, Christian Brochu
Life of this patent
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Abstract
A dry fire protection system for a spa and the spa's associated equipment. A heating element heats the spa's water. A resistive water level sensor senses that the level of water around the heating element is higher than a predetermined height or lower than a predetermined height, and a heating element deactivation device electrically deactivates the heating element when the water level around the heating element falls below a predetermined level. In a preferred embodiment, the heating element deactivation device is an electric circuit comprising a comparator circuit and a control circuit.
Claims10
A dry fire protection system for a spa, comprising:
- A. a heating element for heating the water contained in a water heater, the water defining a water level in said water heater,
- B. a resistive water level sensor for monitoring the water level,
- C. a heating element deactivation device for deactivating said heating element, wherein said heating element, said resistive water level sensor and said deactivation device are arranged in a deactivation circuit such that said deactivation device deactivates said heating element when a signal from said water level sensor indicates that the water level has fallen below a predetermined level.
A dry fire protection system for a spa, comprising:
- A. a heating means for heating the water contained in a water heater, the water defining a water level in said water heater,
- B. a water level sensor means for monitoring the water level,
- C. a heat deactivation means for deactivating said heating means, wherein said heating means, said water level sensor means and said heat deactivation means are arranged in a deactivation circuit such that said heat deactivation means deactivates said heating means when a signal from said water level sensor means indicates that the water level has fallen below a predetermined level.
Dependencies are inferred from the claim text.