초록 ▼

An apparatus and method is provided for infrared qualitative analysis of a fluid independent of the temperature of the fluid. A first signal is generated in response to detected infrared energy passing through the fluid, and a second datum signal is provided for comparison with the first signal, whe

An apparatus and method is provided for infrared qualitative analysis of a fluid independent of the temperature of the fluid. A first signal is generated in response to detected infrared energy passing through the fluid, and a second datum signal is provided for comparison with the first signal, wherein the second signal indicates a non-radiating state. The energy difference between the two signals is provided to a microprocessor control system for computing the fluid quality as a function of the energy difference independent of the temperature of the fluid.

대표청구항 ▼

In a refrigeration, air conditioning, or similar system including a condenser, an evaporator, a compressor, and a lubrication system for delivering a lubricant to said compressor, an apparatus for determining the quality of the lubricant, comprising: a lubricant delivery means in said lubrication sy

In a refrigeration, air conditioning, or similar system including a condenser, an evaporator, a compressor, and a lubrication system for delivering a lubricant to said compressor, an apparatus for determining the quality of the lubricant, comprising: a lubricant delivery means in said lubrication system for delivering a flow of lubricant, an infrared means for radiating infrared energy through said lubricant delivery means, an infrared detection means including an infrared detector for detecting infrared energy radiated through said lubricant delivery means, and a voltage controller for generating a first signal indicative of the detected infrared energy and a second signal indicative of a non-radiating state of said infrared means, and a microprocessor control means for receiving and measuring a difference between said first and said second signals, and for computing from said difference a quality level of the lubricant independent of the temperature thereof, and for generating a third signal indicative of the computed quality level, and a monitor means for receiving said third signal and visually displaying the computed lubricant quality.