Patent ID: 6257005
Filing Date: 2001-07-10
Classification: F24F,F25B

Abstract:
A pressure status meter for an air conditioning system, comprising:a first pressure sensor that generates a first pressure signal when a first pressure condition is detected, wherein the first pressure condition is a caution condition where the pressure reaches a first threshold; a second pressure sensor that generates a second pressure signal when a second pressure condition is detected, wherein the second pressure condition is a shutdown condition where the pressure reaches a second threshold higher than the first threshold;a function processor connected to said at least one pressure sensor, the function processor including:a microcontroller having first and second input ports and first and second output ports corresponding with said first and second pressure sensors, respectively; anda clock signal generator that provides a clock signal to the microcontroller,wherein the microcontroller sends an output signal through the output port corresponding to the pressured condition sensed by the first and second pressure sensors; andfirst and second pressure status indicators responsive to the output signal from the microcontroller to indicate the first and second pressure conditions, respectively.