This SAE Standard applies to electronic probe-type leak detectors used to identify refrigerant leakage when servicing motor vehicle air conditioning systems. This document does not address any safety issues concerning their design or use. The purpose of this SAE Standard is to establish the minimum performance criteria for electronic probe-type leak detectors.
Rationale: Improved design requirements for refrigerant containment of HFC-134a mobile air conditioning systems has resulted in reduced annual system refrigerant emissions. Identification of potential system refrigerant leakage during servicing from these reduced emission systems requires improved detection capability of leak detection devices. These revisions in J2791 establish a new certification procedure and new leak detection value requirements for certification of electronic probe-type leak detectors.