SAE J 2913-2016 R-1234yf [HFO-1234yf] Refrigerant Electronic Leak Detectors Minimum Performance Criteria.pdf

1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref

2、rom, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2016 SAE InternationalAll rights reserved. No part of this publi

3、cation may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE.TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)Tel: +1 724-776-4970 (out

4、side USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visitHTTP:/STANDARDS.SAE.ORG/J2319_201610SURFACE VEHICLESTANDARDJ2913 OCT2016Issued 2011-02Revised 2016-10Superseding J2913 FEB2011R-123

5、4yf HFO-1234yf Refrigerant Electronic Leak Detectors, Minimum Performance CriteriaRATIONALEModification of this standard to include “Definition of Equipment Used for Certification” for prototype or preproduction product used for certification as stated in SAE J2911. In addition, modification to incl

6、ude certification grace period and recertification requirements for the specific revision to this standard.1. SCOPEThis SAE Standard provides testing and functional requirements to meet specified minimum performance criteria for electronic probe-type leak detectors. The equipment specified here will

7、 identify smaller refrigerant leaks when servicing motor vehicle air 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 th

8、e equipment design or use beyond that of sampling a flammable refrigerant save those described in 3.1 and 3.2 of this document. All requirements of this standard shall be verified in SAE J2911.1.1 PurposeThe purpose of this SAE Standard is to establish minimum performance criteria for a modern class

9、 of electronic probe- type leak detectors intended for use in automotive air conditioning systems with R-1234yf, an A2L flammable refrigerant.1.2 Grace PeriodThis revision is subject to a 0 day grace period from the date of publication. After the grace period, only the most recent version of this st

10、andard may be used for certification and/or recertification. To certify equipment to the prior version of this standard, actual laboratory testing, not merely the signing of a contract, etc. must have begun prior to the publication date of this new version. No laboratory certification to any prior v

11、ersion of this standard, shall be accepted by SAE for listing under the provisions of J2911 after 90 days from the publication date of this revision.SAE INTERNATIONAL J2319 OCT2016 Page 2 of 132. REFERENCES 2.1 Applicable DocumentsThe following publications form a part of this specification to the e

12、xtent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply.2.1.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org.SAE

13、J639 Safety Standards for Motor Vehicle Refrigerant Vapor Compression Systems SAE J2791 HFC-134a Refrigerant Electronic Leak Detectors, Minimum Performance CriteriaSAE J2845 R-1234yf HFO-1234yf and R-744 Technician Training for Service and Containment of Refrigerants Used in Mobile A/C SystemsSAE J2

14、911 Procedure for Certification that Requirements for Mobile Air Conditioning System Components, Service Equipment, and Service Technician Training Meet SAE J StandardsSAE J1739 Potential Failure Mode and Effects Analysis in Design (Design FMEA), Potential Failure Mode and Effects Analysis in Manufa

15、cturing and Assembly Processes (Process FMEA)3. TECHNICAL REQUIREMENTS3.1 The detector shall be tested to meet the performance specifications of this standard by an independent testing facility as defined in SAE J2911, and in accordance with the procedures set for in SAE J2911. The independent testi

16、ng facility 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. 3.1.1 The manufacturer may state certification of compliance with this Standard (including use of

17、 any labeling) only after meeting the requirements in SAE J2911 “Procedure for Certification That Requirements for Mobile Air Conditioning System Components, Service Equipment and Service Technicians Meet SAE J Standards”. See Appendix B.3.1.2 To certify pre-production or prototype units as defined

18、in SAE J2911, they shall not be marketed with a label indicating that they meet the appropriate SAE standard until the following requirement is met. The SAE label shall not be applied to these units until the independent laboratory has confirmed that the manufacturer has made, in one months serial p

19、roduction, at least 150 completed serial production units.3.2 The detector shall be suitable for use in safely identifying R-1234yf an A2L flammable refrigerant. As a safety factor against use of a more flammable refrigerant in vehicle service, the marketer shall certify that at peak sensitivity, th

20、e temperature anywhere within the detector does not exceed 400 C (752 F) so that ignition cannot occur. This shall be verified by prolonged exposure of any component subject to producing high temperature to a flammable propane-air mixture, such as from a propane torch. 3.2.1 If any components may op

21、erate at that temperature or above, they shall meet ANSI/ISA 12.12.01 and/or be enclosed or housed in a location within the detector that will, in case of separation at any connections within the refrigerant sampling flow route, prevent refrigerant from coming into contact with same.3.2.2 If any com

22、ponents, such as switches, solenoids and motors, come into contact with the refrigerant sample, they shall be of arc-suppression design as specified in ANSI/ISA12.12.01. 3.2.3 The detector shall be suitable for use in an automotive service garage and operate in ambient temperatures of 15 to 49 C (59

23、 to 120 F).SAE INTERNATIONAL J2319 OCT2016 Page 3 of 133.3 The detector shall have at least three scales that can be manually selected: (1) 4 g/year (0.15 ounce/year); (2) 7 g/year (0.25 ounce/year); (3) 14 g/year (0.5 ounce/year).3.4 If it passes, the detector shall carry a label that states “Desig

24、n certified by (name of independent testing laboratory) to meet SAE J2913 with lettering in bold face type at least 3 mm high.3.5 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 m

25、arketer has documented changes made to correct the failure and given the data to the independent testing laboratory. A detector shall pass the procedures in Sections 7 and 8. A failure in either or both of those sections requires a complete retest. The detector also shall meet the requirements of Se

26、ction 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.4. WHAT SHALL ACCOMPANY THE DETECTOR4.1 The marketing company shall provide operating instructions for the detector that cover cali

27、bration, normal usage, maintenance, trouble shooting and spare parts.4.2 Tools, adapters and needed adjustment and calibration devices (including calibration and/or reference bottles) for the detector shall be included with the detector.4.3 The marketing company shall provide all needed safety infor

28、mation and labeling.4.4 The marketing company shall provide the Section 10 list of all common under hood chemicals that may affect the operation of an electronic leak detector and indicate by Y if this detector will false-trigger from exposure to each of the chemicals on the list, or N if it will no

29、t false-trigger.4.5 The resistance to false triggering shall be based on the test procedures described in Section 9. False triggering is defined as the detector making the same or similar indication (sound and/or light) as if it detected a refrigerant leak.5. REQUIRED BASIC FUNCTIONS5.1 The detector

30、 may self-calibrate or require manual calibration, but once calibrated for an operation, it shall hold that calibration for a time sufficient to perform the operations described in Sections 7 and 8 (including 8.1 to 8.6). This does not preclude automatic recalibration for a probe that has been inser

31、ted into a contaminated atmosphere (as per Section 8), readjustment of sensitivity by operator selection, or an audible-and-or-visual warning of a condition beyond the operating scope of its design. The latter shall be obviously different from the indication of a refrigerant leak, although the same

32、functional trigger may be used. Example: a steady indicator light versus a flashing indicator light.5.2 The detector shall demonstrate automotive garage durability by continuing to function normally after being dropped 1.2 m (4 feet) to a hard surface, such as a concrete floor, four times. This test

33、 may be performed with the detector in a protective caddy, provided the caddy is a standard part of the basic detector kit, and does not affect in-shop use of the detector, or testing of the detector under all procedures in Sections 7, 8, 9, and 10.5.3 The detector shall demonstrate automotive garag

34、e durability by continuing to function normally after being turned on and5.3.1 The probe tip has been submerged to a depth of 6 mm (0.25 inch) in a pan of water and drawn through the water at a rate of 75 mm (3 inch) per second for 2 seconds and5.3.2 Then, after wiping clean and given any other clea

35、ning/maintenance prescribed by the manufacturer in its operatinginstructions manual, including but not limited to a sensor replacement or filter change.SAE INTERNATIONAL J2319 OCT2016 Page 4 of 136. LEAK DETECTION TEST EQUIPMENT6.1 The testing shall be performed with the probe in a 610 mm (2 feet) c

36、ube clear sealed chamber as described in the appendix, Figures A1 and A2. A chamber built to conform to SAE J2791 is suitable.6.1.1 Illustrations and details of the chamber are described in the Appendix. A vertical wall of the chamber shall have a slot 200 mm (8 inch) wide or wider, and large enough

37、 for a probe from an externally mounted detector to go through. The slot opening shall be sealed with6.1.2 Overlapping strips of a rubber material that conforms sufficiently around the probe to maintain the specified level of contaminated atmosphere, or6.1.3 A butt joint of conforming rubber seals w

38、ith additional sealing from face seals on the detector probe neck that are in contact with the butt joint.6.1.4 Any other slot sealing method that provides the chamber sealing required for Section 8.The rubber strips and face seals may be lubricated to provide smooth movement of the probe and any su

39、rrounding brace as described in 6.3.6.1.5 The chamber shall have an access door large enough to insert a calibrated leak standard, a cylindrical sleeve or round-hole access point for a gas-tight syringe and a built-in mixing fan (120 V, approximately 40 cfm) to circulate an injection of refrigerant

40、gas to produce uniform distribution of injected gas for a contaminated atmosphere test. The chamber should have a provision for attaching a vacuum source (such as a small household vacuum motor) to permit rapid clearing of the chamber following a contaminated atmosphere test. The cylindrical sleeve

41、or round-hole access shall include a sealing plug or other provision for sealing following use of the gas-tight syringe.6.1.6 The four calibrated leak standards used for the tests shall be calibrated per methods and instruments per the National Institute of Standards and Technology, Washington, DC 2

42、0234, and the standards shall be rated accurate to within 20%. The leak rates shall be in common units -14 g/year (0.5 ounce/year), 7 g/year (0.25 ounce/year), 4 g/year (0.15 ounce/year) and 2 g/year (0.0625 ounce/year). The leak standards shall contain 100% R-1234yf. The standards or their mounting

43、 locations in the chamber shall ensure the base of the standard is 75 mm (3 inch) or more from the floor of the chamber. This is to provide a sufficient drop for refrigerant coming from the leak standard orifice, to minimize refrigerant puddling around the orifice and/or orifice shroud if used. To m

44、itigate testing inconsistency from possible air turbulence caused by the moving probe, the leak standards may be equipped (as a certification test option) with a shroud around the orifice port. The shroud protrusion from the orifice port shall be no more than 6 mm +0/-0.2 mm (0.236 inch +0/-0.01 inc

45、h). A view of a sample configuration, with dimensions within those ranges is shown in the Appendix, as Figure A3. If a shroud is used with any leak standard, this shroud also shall be used with all other leak standards for certification of a detector. This shall be verified that the calibrated leak

46、standards have been tested as accurate and have not been tampered with in any way. 6.1.7 The detector shall be mounted on a table with a moving platform, designed to produce a horizontal reciprocating motion of at least 150 mm (6 inch), and a motor drive adjusted to move the platform so the probe ti

47、p passes the specified calibrated leak at a rate of 75 mm (3 inch) per second, from a distance of 9.5 mm (3/8 inch) per 7.2 All moving probe tests in this standard shall be performed at that rate as the probe passes the orifice of the calibrated leak standard. The platform shall stop at each end of

48、its travel for no less than eight, no more than 10 seconds. The stop may be manually controlled by a test operator or performed automatically with a switch at each end-of-travel and a timer. A table that was built to conform to requirements for SAE J2791 is suitable.6.2 It is necessary to hold stead

49、y the detectors flexible neck and probe, as the detector probe moves side to side through the sealed slot in the vertical wall of the chamber. If the design of the flex neck requires, this may be done by adding to the platform a brace (may be C or U channel) sized to hold the flex neck and probe securely, and long enough to protrude through the slot to within a distance conveniently short of the 9.5 mm (3/8 inch) from the orific