SAE J2791-2019 free download.HFC-134a Refrigerant Electronic Leak Detectors, Minimum Performance Criteria.
This document is being update to add an appendix to describe the requirements for cetification according to SAE J2911.
FOREWORD
The purpose of this SAE Standard is to establish minimum performance criteria for a modern class of electronic probetype leak detectors intended for use in automotive air conditionin systems with HFC-134a refrigerant.
This SAE Standard provides testing and functional requirements to meet specified minimum performance criteria for electronic probe-type leak detectors. So they will identify smaller refrigerant leaks when servicing all motor vehicle ai conditioning systems, including those engineered with improved sealing and smaller refrigerant charges to address environmental concerns and increase system efficiency. This document does not address any safety issues concerning their design or use.
It shall be tested to meet the performance specifications of this standard by a qualified independent laboratory. The laboratory shall maintain all documentation related to its testing, including calibration and maintenance data for its equipment, for a period of five years following the test of the specific detector.
If it passes, the detector shall carry a label that states”Design certified by (name of testing laboratory ) to meet SAE J2791 with lettering in bold face type at least 3 mm high.
If it does not pass, the detector may be retested subject to the limits of Section 10. If a detector fails beyond these retest limits, it may be retested only after the marketer has documented changes made to correct the failure and given the data to the testing laboratory. A detector must pass the procedures in Sections 7 and 8. A failure in either or both of those sections requires a complete retest. The detector also must meet the requirements of Section 9,passing the no-false-triggering requirement for transmission oil and engine oil (Nos. 14 and 15) and clearing within 20 seconds after a permitted false-trigger.