1、Designation: F2865 11Standard Guide forClassifying the Degrees of Ingression Protection Providedby a Membrane Switch1This standard is issued under the fixed designation F2865; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea
2、r of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This guide establishes a classification system and refer-ences test methods for verifying the degrees of protecti
3、onprovided by a membrane switch against the following:1.1.1 The ingress of dust into a membrane switch.1.1.2 Ingress of water into a membrane switch, or the entryinto the finished product on which it is mounted.1.1.3 It can be expanded to incorporate the degrees ofprotection from other environmental
4、 contaminants (such as saltfog) as these tests are developed either by ASTM, or existingtest methods developed by other organizations are determinedto be appropriate.1.1.4 Where external test methods are referenced, this guidespecifies the special conditions that shall be considered inapplying these
5、 tests to membrane switches and how the resultsare interpreted.1.1.5 The IP rating is based on the switch construction onlyand does not consider the effects of the switch body as a sealantfor the enclosure.1.1.6 For ingress of dust, numerals 5 and 6, the test iscarried out according to category 2 (t
6、esting at atmosphericpressure).1.2 This guide references appropriate test methods forverifying that a membrane switch satisfies the level of protec-tion specified by a given classification.1.3 This guide is a modification of the classification systemdescribed within IEC 60529 Degrees of Protection O
7、fferedBy An Electronic Enclosure.2. Referenced Documents2.1 ASTM Standards:2F1578 Test Method for Contact Closure Cycling of aMembrane SwitchF1680 Test Method for Determining Circuit Resistance of aMembrane SwitchF1689 Test Method for Determining the Insulation Resis-tance of a Membrane SwitchF2592
8、Test Method for Measuring the Force-Displacementof a Membrane Switch2.2 IEC Standard:360529 Degrees of Protection Offered by an ElectronicEnclosure3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 membrane switch, na momentary switching devicein which at least one contact is on,
9、 or made of, a flexiblesubstrate.4. Classification System4.1 The degree of protection provided by a membraneswitch is designated by the MS-IP code:4.1.1 MSAIP654.1.1.1 MS = membrane switch.4.1.1.2 A = If “A” is present in code then method or mediadeviates from this standard.4.1.1.3 IP = Standard Ing
10、ress Protection designation.4.1.1.4 1st Numeral = Dust Protection Code (see Table 1).4.1.1.5 2nd Numeral = Water (Liquid) Protection Code (seeTable 2).4.1.2 The MSIP code comprises a series of numerals. Eachnumeral represents the level of ingress protection offered bythe membrane switch to each cont
11、aminant. In this standardwhen addressing only the 1st or 2nd numeral the other numeralis replaced with an “X” for clarity. For example, MSIP X5would refer only to testing for water ingression. The “X”notation is not used as a final designation. If testing is notcompleteda“0”isused for that numeral (
12、see Table 1 andTable 2).4.1.3 It is intended that the classification scheme be ex-panded by the addition of further numerals to the sequence toincorporate tests for other contaminants. Deviation from thestandard are declared.4.1.4 The numeric designations for dust and water are basedon those classif
13、ied under IEC 60529.1This guide is under the jurisdiction of ASTM Committee F01 on Electronicsand is the direct responsibility of Subcommittee F01.18 on Membrane Switches.Current edition approved July 1, 2011. Published August 2011. DOI: 10.1520/F2865-11.2For referenced ASTM standards, visit the AST
14、M website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from International Electrotechnical Commission (IEC), 3, rue deVaremb, P.O. Box 131, CH-1211 Ge
15、neva 20, Switzerland, http:/www.iec.ch.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Significance and Use5.1 Ingression protection classifications are widely used bymanufacturers for specifying the level of protection offered by
16、electronic enclosures.5.2 An example of such a classification scheme is IEC60529. Membrane switch manufacturers are often asked tomeet these standards, however the test methods specifiedwithin these standards do not address considerations specific tomembrane switches.5.3 A single classification sche
17、me such as this is an impor-tant means of integrating the various standards that relate toingression protection specifically for membrane switches.5.4 Ingression testing can be useful to identify designdeficiencies.6. Interferences6.1 The membrane switch should not be tested in itsun-mounted state.
18、The switch sample or a representativecoupon of the switch should be mounted onto the final end-useenclosure, panel, bezel, or agreed upon material.6.1.1 Discussion Assembly Specimen ThisASTM test istrying to provide a practical world analog for the results hereinobtained, as a result, the unit under
19、 test (UUT) must be in thefinal mounted condition. The test is able to show flame-resistance in the final assembly as it interacts with themembrane switchs construction.6.2 The roughness, flatness, and existence of residues on thesubstrate surface to which the membrane switch is mounted.6.3 The leng
20、th of time between the lamination of themembrane switch layers together to make the switch.6.4 The length of time between the lamination of themembrane switch to the substrate and the performance on thetest.6.5 The temperature at which the test is being conducted.7. Conditioning7.1 Unless otherwise
21、specified in a relevant product stan-dard, the test samples for each test shall be in a clean and newcondition.7.2 It is preferred that the switch is mounted on a rigidtransparent backer to better observe the ingression of dust orwater into the switch, however when required and declared, theparts sh
22、all be mounted on the enclosure in the manner stated bythe manufacturer.8. Test Method for Ingress of Dust into a MembraneSwitch8.1 Apparatus:8.1.1 Dust Chamber: Reference IEC 60529 Section 13.4.8.1.2 Dust Media:8.1.2.1 For MSIP5X and MSIP6X : Reference IEC 60529Section 13.4.8.1.2.2 For all MSAIP5X
23、and MSAIP6X media to bespecified.8.1.3 Mounting SurfaceThe mounting surface shall bedeclared as the material, surface and any irregularities in theflat surface.8.1.4 EnclosureIf the switch and end product enclosureare tested together to demonstrate the switches ability to seal anopening then the fol
24、lowing must be followed: The mountingTABLE 1 1st Numeral = Dust Protection CodeNumerals or Letters Meaning for the protection of Requirement Summary Test Equipment0 Not tested/or no protection none N/A1,2,3 Not applicable to membrane switches none N/A4 Solid objects (no venting to thelocations outsi
25、de theenclosure)Internally vented only.Ingress of solid objects upto 1.0 mm and 1N,no entrance of the probe1.0 mm diameter test pinForce gage5 Dust protected Ingress of dust is nottotally prevented, but thedust shall not penetrate ina quantity to interfere withthe satisfactory operationof the appara
26、tusIEC 60529 Dust ChamberNo pressure added to the chamber6 Dust tight No Ingress of Dust IEC 60529 Dust ChamberPositive pressureTABLE 2 2nd Numeral = Water (Liquid) Protection CodeNumerals or Letters Meaning for the protection of Requirement Summary Test Equipment0 Not tested/or not protection none
27、N/A1 Vertically dripping IEC 60529 Drip Box2 Dripping (15 deg tilted) IEC 60529 Drip Box3 Spraying IEC 60529 Oscillating Tube or SprayNozzle4 Splashing IEC 60529 Oscillating Tube or SprayNozzle5 Jetting IEC 60529 Test Nozzle with 6.3 mmnozzle6 Powerful Jetting IEC 60529 Test Nozzle with 12.5 mmnozzl
28、e7 Temporary immersion IEC 60529 Complete immersion in water8 Continuous immersion IEC 60529 Complete immersion in waterF2865 112surface material shall be representative of the actual mountingsurface and be part of an enclosure and shall be fitted to notallow dust into the enclosure except through t
29、he membraneswitch.8.2 Pre-Test Setup:8.2.1 Measurements and Process Testing are completed onswitches nearest the weakest point for ingress of dust, such asthe first switch cavity adjacent to an external vent channel.8.2.2 Measure Fmax and Fc and any other desired charac-teristic per Test Method F259
30、2 and record.8.2.3 Insulation Resistance per Test Method F1680.8.2.4 Reference IEC 60529 Section 13.4.8.3 In Process Test:8.3.1 Reference IEC 60529 Section 13.4.8.3.2 A switch affecting the venting to all switches in thepre-test setup group shall be cycled according to Test MethodF1578 contact closu
31、re, Procedure section. The probe, numberof cycles and duty cycle are declared. The cycling rate shall be3 to 5 cycles per second. The cycling may be completed withno electrical load.8.4 Post Test:8.4.1 Measurements are made at the same locations used forpre-test setup.8.4.2 Measure the circuit resis
32、tance per Test Method F1680.8.4.3 Measure insulation resistance per Test Method F1689.8.4.4 Reference IEC 60529 Section 13.5 for MSIP5X orMSAIP5X. The presence of any dust inside the membraneswitch is determined in part by the measurements indicatedabove. Visual inspections shall be made where pract
33、ical; theresults are recorded as qualitative observations.8.4.5 Reference IEC 60529 Section 13.5 for MSIP6X orMSAIP6X. The presence of any dust inside the membraneswitch is determined by cleaning outside of the switch, thenopening the switch for internal inspection of the completeswitch such as cavi
34、ties, vent tracks, contact surfaces etc. Nodust is permitted.8.5 Report the following information:8.5.1 Visual change.8.5.2 Mechanical Changes:8.5.2.1 Fmax, Fmin, Fc mandatory per Test Method F2592 other force displacement supporting data and curves optional.8.5.3 Electrical Characteristic Changes:8
35、.5.3.1 Circuit Resistance per Test Method F1680.8.5.3.2 Insulation Resistance per Test Method F1689.8.5.4 Test Conditions:8.5.4.1 Temperature.8.5.4.2 Humidity.8.5.5 Test Probe:8.5.5.1 Shape and material (durometer if elastic probe isused).8.5.5.2 Test probe orientation if other than 90 degrees tosam
36、ple.8.5.5.3 Location of contact point if other than center ofswitch.8.5.5.4 Duty cycle.8.5.5.5 Test rate.8.5.5.6 Number of cycles.8.5.5.7 Applied force.8.5.6 Environmental test conditions other than standardcontrol laboratory atmosphere.9. Test Method for Ingress of Water into a MembraneSwitch9.1 Ap
37、paratus:9.1.1 Water: Reference IEC 60529 Section 14.0.9.1.2 Water:9.1.2.1 For MSIPX1-8: Reference IEC 60529 Section 14.0.9.1.2.2 For all MSAIPX1-8 and media to be specified.9.1.3 Mounting SurfaceThe mounting surface shall bedeclared as the material, surface and any irregularities in theflat surface.
38、9.1.4 EnclosureIf the switch and end product enclosureare tested together to demonstrate the switches ability to seal anopening then the following must be followed: The mountingsurface material shall be representative of the actual mountingsurface and be part of an enclosure and shall be fitted to n
39、otallow water into the enclosure except through the membraneswitch.9.2 Pre-Test Setup:9.2.1 Measurements and Process Testing are completed onswitches nearest the weakest point for ingress of water, such asthe first switch cavity adjacent to an external vent channel.9.2.2 Measure Fmax and Fc and any
40、other desired charac-teristic per F2592 and record.9.2.3 Insulation Resistance per Test Method F1680.9.2.4 Reference IEC 60529 Section 14.0.9.3 In-Process Test:9.3.1 Reference IEC 60529 Section 14.0.9.3.2 A switch affecting the venting to all switches in thepre-test setup group shall be cycled accor
41、ding to Test MethodF1578 contact closure, Procedure section. The probe, numberof cycles and duty cycle are declared. The cycling rate shall be3 to 5 cycles per second. The cycling may be completed withno electrical load.9.4 Post Test:9.4.1 Measurements are made at the same locations used forpre-test
42、 setup.9.4.2 Measure the circuit resistance per Test Method F1680.9.4.3 Measure insulation resistance per Test Method F1689.9.4.4 Reference IEC 60529 Sections 14.2.1 thru 14.2.8 forMSIPX1-8 or MSAIP5X1-8. The presence of any water insidethe membrane switch is determined in part by the measure-ments
43、indicated above. Visual inspections shall be made wherepractical; the results are recorded as qualitative observations.9.4.5 The presence of any water inside the membrane switchis determined by opening the switch for internal inspection ofthe complete switch such as cavities, vent tracks, contactsur
44、faces etc. No water is permitted.9.5 Report the following information:9.5.1 Visual change.9.5.2 Mechanical changes.9.5.2.1 Fmax, Fmin, Fc mandatory per Test Method F2592 other force displacement supporting data and curves optional.9.5.3 Electrical Characteristic Changes:9.5.3.1 Circuit resistance pe
45、r Test Method F1680.9.5.3.2 Insulation resistance per Test Method F1689.9.5.4 Test Conditions:F2865 1139.5.4.1 Temperature.9.5.4.2 Humidity.9.5.5 Test Probe:9.5.5.1 Shape and material (durometer if elastic probe isused).9.5.5.2 Test probe orientation if other than 90 degrees tosample.9.5.5.3 Locatio
46、n of contact point if other than center ofswitch.9.5.5.4 Duty cycle.9.5.5.5 Test rate.9.5.5.6 Number of cycles.9.5.5.7 Applied force.9.5.6 Environmental test conditions other than standardcontrol laboratory atmosphere.ASTM International takes no position respecting the validity of any patent rights
47、asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any tim
48、e by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will r
49、eceive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-
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