Patented Temperature Comparison Circuit Device for Monitoring Heating and Cooling Systems:  U.S. Patent # 6,101,827

The Temperature Comparison Circuit Device monitors central heating and cooling systems, freezers or coolers constantly, eliminating any problems before they cause damage. It is available for license. 

Shown Below:   A temperature comparison circuit with expansion valve:

Temperature Comparison Circuit Device:  

Detects the following problems: 


Shown Below:   A temperature comparison circuit and valve controls bath water temperature: 

Inventor:  Ben Burson, P.O. Box 9231, Austin, TX 78766. Phone: (512) 452-3060 or 453-1266

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