Patent Number: 6,308,523

Title: Simplified subcooling or superheated indicator and method for air conditioning and other refrigeration systems

Abstract: A simple field installable/removable indicator is usable with a field pressure measurement to indicate the degree of subcooling or superheat of refrigerant in a vapor-compression or refrigeration system. The indicator can be attached to a pipe at an appropriate location in the system. The indicator can be used with a pressure measurement obtained at an existing service valve. Temperature-indicating liquid crystals or other chemicals, or alternatively, a conventional thermometer included on the indicator can be used with a scale which shows the superheat or subcooling without requiring saturation curves or tables.

Inventors: Scaringe; Robert P. (Rockledge, FL)

Assignee: Mainstream Engineering Corporation

International Classification: F25B 49/00 (20060101); G01K 3/00 (20060101); F25B 049/02 ()

Expiration Date: 10/30/2018