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Single sensor three-step refrigerant charge indicator

  • US 20060137369A1
  • Filed: 12/27/2004
  • Published: 06/29/2006
  • Est. Priority Date: 12/27/2004
  • Status: Abandoned Application
First Claim
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1. A method of determining the sufficiency of refrigerant charge in an air conditioning system device having a single temperature sensor, comprising the steps of:

  • providing an absorbent pad in combination with said temperature sensor such that said sensor is capable of sensing both wet bulb and dry bulb temperatures;

    wetting said pad and sensing an indoor wet bulb temperature of the system;

    removing or allowing said pad to dry and then using said sensor to sense the outdoor dry bulb temperature;

    placing said sensor in direct engagement with the liquid refrigerant line from the condenser coil and sensing the temperature thereof; and

    on the basis of those three sensed temperatures, determining whether the refrigerant charge in the system is adequate.

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