Refrigerant measuring and warning device and sensing element thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Oct 11, 2007
app pub date -
Jan 4, 2007
filing date -
Apr 11, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A refrigerant measuring and warning device includes a casing, at least one sensing element, and a detection circuit. The casing forms connectors, which are connected together by a conduit, to selectively connect to sources of refrigerant to be detected. The sensing element has an enclosure forming a connector at an end for connection with the conduit and an interior chamber communicating the connector via a pressure-dropping necked passage, a pressure detection chip and a thermocouple arranged at a top of the chamber for detecting pressure and temperature of the refrigerant to be detected. The detection circuit is housed in the casing and stores multiple sets of reference temperature and pressure for different type of refrigerants for comparison with the detected pressure and temperature, both data being displayed on a display device for visual observation and comparison. The detection circuit receives settings of alarm thresholds for the detected pressure and temperature via a keypad whereby a warning unit may issue a warning sound or voice alarm when the detected pressure and temperature reach/exceed the thresholds.
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