1、Designation: E1684 10E1684/E1684M 15Standard Specification forMiniature Thermocouple Connectors1This standard is issued under the fixed designation E1684;E1684/E1684M; the number immediately following the designation indicatesthe year of original adoption or, in the case of revision, the year of las
2、t revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers separable single-circuit miniature thermocouple connectors with two flat pins. Connectors cover
3、edby this specification must be rated for continuous use to at least 300F (150C), but they may optionally be rated higher.to a highertemperature.1.2 This specification does not cover multiple-circuit connectors, multi-pin connectors, standard size connectors, or connectorsintended primarily for pane
4、l mounting. High-temperature connectors (for example, those designed for continuous use attemperatures significantly above approximately 500F (260C)260C) are not intended to be covered by this specification.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as
5、 the standard. The values stated inbrackets are not conversions to the values they succeed and therefore shall be used independently of the preceding values. Thevalues given in parentheses are for information only.conversions of the values they succeed. Combining values from the twosystems may resul
6、t in non-conformance with the standard.1.4 The plug and jack may be ordered separately but many of the connector characteristics (see Table 1) are qualified as a matedpair. The requirements in this standard are applicable for the connector pair supplied by the same manufacturer.1.5 The following pre
7、cautionary statement pertains only to the test methodsTest Methods portion, Section 9, of thisspecification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appropriate safety and
8、 health practices and determine the applicability ofregulatory limitations prior to use.2. Referenced Documents2.1 The following documents of the latest issue form a part of this specification to the extent referenced herein. In case ofconflict between this specification and another referenced docum
9、ent, this specification shall take precedence.2.2 ASTM Standards:2E230E230/E230M Specification and Temperature-Electromotive Force (EMF)(emf) Tables for Standardized ThermocouplesE344 Terminology Relating to Thermometry and HydrometryE2820 Test Method for Evaluating Thermal EMF Properties of Base-Me
10、tal Thermocouple Connectors3. Terminology3.1 DefinitionsThe definitions given in Terminology E344 shall apply.3.2 Definitions of Terms Specific to This Standard:3.2.1 connector pair, nassembly consisting of a plug and a jack, each having both positive and negative inserts, that willconnect two parts
11、 of an electrical circuit and provide a means of physically disconnecting the two parts without the use of tools.atool.3.2.2 contact insert, nmetallic conductor assemblies that, when installed in connector bodies, provide connections betweentwo parts of an electrical circuit. Plug connectors will co
12、ntain projecting prong contacts, while jack connectors will containrecessed socket or receptacle contacts.1 This specification is under the jurisdiction of ASTM Committee E20 on Temperature Measurement and is the direct responsibility of Subcommittee E20.04 onThermocouples.Current edition approved N
13、ov. 1, 2010Dec. 1, 2015. Published December 2010January 2016. Originally approved in 1995. Last previous edition approved in 20052010as E1684 05.E1684 10. DOI: 10.1520/E1684-10.10.1520/E1684-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at se
14、rviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version
15、. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International,
16、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.3 service life, nintervalperiod of time that over which a connector assembly willcan be put to use and retain all physicaland thermoelectric properties.3.2.4 test difference, napparent thermoelectric difference
17、emf value attributable to mated connectors observed by the testprocedure of this specification.4. Significance and Use4.1 The widespread use of thermocouple connectors requires standardization of mating dimensions and performancecharacteristics.4.2 This specification describes miniaturizedminiature
18、thermocouple connector dimensions and capabilities and includes testprocedures suitable for evaluating the performance of a particular specimen or design. The tests described are not intended forroutine inspection or rapid testing of large groups of connectors or for quality control purposes.5. Clas
19、sification5.1 Plugs or Jacks:5.1.1 Connectors shall be constructed as either plugs or jacks, and these two forms shall be designed to connect with each other.5.1.2 Plug connectors shall have two external prong contacts of differing sizesdifferent dimensions to prevent improper mating.The negative pr
20、ong shall be the wider, as indicated in Table 2 and Fig. 1.5.1.3 Jack connectorconnectors shall have two internal socket contacts sized and spaced to receive and accommodate the prongcontacts of the mating plug. Jack connectors shall also include a means of producing and maintaining sufficient conta
21、ct pressureto meet all the other requirements of this specification.5.2 ANSI/ASTM Type:5.2.1 Connectors shall be produced in versions to match each of the standardized ANSI/ASTM thermocouple types as given inTable 3.TABLE 1 RatingsCharacteristic min maxOperating temperature 0F (-18C) 300F (150C)Cont
22、act resistance (each leg) . 0.04 Insulation resistance at room temperature 107 .Insulation resistance at 300 F (150 C) 106 .Test difference . 2F (1.1C)Repeated coupling cycles (coupled oruncoupled)25 .Service life 5000 h .Withdraw force 8 oz .TABLE 1 RatingsCharacteristic Min Max Requirement Test Pr
23、ocedureOperating temperature 0F -18C 300F 150C 7.1.2 9.7Contact resistance (each leg) . 0.04 7.2.6 9.2Insulation resistance at room temperature 107 . 7.3.4 9.4Insulation resistance at 300 F (150 C) 106 . 7.3.4 9.4Thermal gradient test difference . 2F 1.1C 7.2.7 9.3Repeated cycles 25 . 7.2.4 9.6Servi
24、ce life 5000 h . 7.3.5 9.7Disengagement force 8 ozf 2.2 N . 7.2.3 9.5TABLE 2 DimensionsDimension SymbolA Minimum Size,in. (mm) Maximum Size,in. (mm)Plug body length PL . 0.788 (20.00)Jack body length JL . 1.069 (27.13)Body width W . 0.635 (16.10)Body thickness T . 0.385 (9.78)Length of prong P 0.406
25、 (10.31) 0.515 (13.10)Depth of socket J 0.515 (13.10) .Prong spacing X 0.307 (7.80) 0.317 (8.05)Positive pin width W1 0.090 (2.28) 0.098 (2.49)Negative pin width W2 0.121 (3.07) 0.129 (3.27)Pin thickness T1 0.030 (0.73) 0.034 (0.86)A Symbol reference corresponds to Fig. 1.E1684/E1684M 1525.2.2 The i
26、nsert materials of each plug and jack shall have thermoelectric properties conforming to the nominal characteristicsof the corresponding thermocouple type as given in Specification E230E230/E230M over the operating temperature range specifiedin Table 1.5.2.3 Calibration conformance and gradient test
27、ing is not applicable to Type B thermoelectrically neutral (Cu/Cu) connectors.6. Ordering Information6.1 Orders for connectors under this specification shall include the following:6.1.1 Quantity of plugs or jacks (specify which);6.1.2 ANSI/ASTM calibration thermocouple type and color code per (see T
28、able 3. Connectors shall be supplied to the ASTMcolor code unless otherwise specified;);6.1.3 Any optional accessories that may be required, such as those listed in 7.4.3;6.1.4 Special testing requirements; and6.1.5 Requirements for certificates of conformance to the specifications or reports of the
29、 results of any required testing.7. Materials and Manufacture7.1 Body:7.1.1 The dimensions of the connector bodies shall fall within the limits given in Table 2.7.1.2 The connector body shall be made of an insulating material capable of continuous use at any temperature between 0F(-18C)-18C and 300F
30、 (150C)150C for the service life given in Table 1, without losing its ability to conform to thisspecification.FIG. 1 Miniature Thermocouple Connector Dimensions(see Table 2)TABLE 3 IdentificationANSI/ASTMTypeABody Color CodingT blueJ blackE purpleK yellowN orangeR or S greenB (Cu/Cu)A whiteC redA Th
31、ermoelectrically neutral Uncompensated (Cu/Cu) connectors are customarilyused with Type B thermocouples.E1684/E1684M 1537.1.3 The connector bodies shall be coloredcolor-coded in accordance with the color code given in Table 3 to provide rapid andpermanent identification of the thermocouple calibrati
32、on with which it isthey are designed to be used. Each plug and jack shall bepermanently marked with a symbol or symbols to identify positive and negative conductor inserts. All connectors shall bear thesuppliers name or other means of source identification, unless otherwise specified in the purchasi
33、ng documents.7.1.4 An insulating barrier shall be incorporated into each connector body to prevent inadvertent contact betweenthermoelements or wires.7.2 Inserts:7.2.1 Contact inserts shall be fabricated of paired materials of the same thermocouple typethat meet the requirements of 5.2 asthe thermoc
34、ouple with which they are to be used.7.2.2 The inside width width, thickness, and depth of the jack connector shall be such as to receive the corresponding plugplugsprong smoothly and easily when inserted.7.2.3 The force required for complete disengagement shall conform to the requirements of Table
35、1.7.2.4 The connector pair shall be capable of repeated insertion and withdrawal cycles as given in Table 1 without losing theability to conform to the requirements of this specification.7.2.5 The dimensions and locations of the inserts in the connector body shall fall within the limits given in Tab
36、le 2.7.2.6 The contact resistance between the assembled plug and jack shall conform to the requirements of Table 1.7.2.7 The connector pair shall be capable of passing the thermal gradient test specified in Table 1.7.3 Construction and Assembly:7.3.1 Wire attachment shall be by means of a screw or c
37、lamp suitable for use with wire diameters from 30 AWG (0.01 in. or0.25 mm in.0.25 mm in diameter) to 20 AWG (0.032 in. or 0.8 mm 0.8 mm in diameter).7.3.2 Contact inserts and wire attaching parts shall be held captive to one of the body parts.7.3.3 Connections and final closures of the connector sha
38、ll be accomplished with simple hand tools such as screwdrivers,wrenches, or pliers.7.3.4 The assembled connector shall be capable of passing the insulation resistance requirements listed in Table 1 at thetemperatures listed.7.3.5 The materials and construction used in the connector shall be such tha
39、t the connector will meet all of the specifiedrequirements for the service life interval listed in Table 1.7.4 Optional Accessories:7.4.1 Connector accessories are not covered by this specification and may be unique to a manufacturers specific design.7.4.2 All required optional accessories are to be
40、 specified separately from the connectors.7.4.3 The following is a partial list of useful accessory items:7.4.3.1 Cable clamping devices for attaching flexible cables;7.4.3.2 Clamps for rigid tubing and sheaths in a range of diameters whose conductor sizes are within the range specified in 7.3.1;7.4
41、.3.3 Elastomeric boots to seal connector assemblies against moisture in service;7.4.3.4 Safety clamps or other devices to prevent inadvertent separation of connectors under conditions of severe vibration; and7.4.3.5 Flat washers for use under wire attachment screw heads as an aid in the retention of
42、 the wires.7.4.4 Some suppliers may not offer all the above items, while others may offer additional items. Supplier catalogs and literatureshould be consulted for details.8. Physical Properties8.1 The physical size of connectors conforming to this specification shall fall within the limits given in
43、 Table 2 for alldimensions indicated in that table. All other dimensions and all details of construction shall be determined by athe manufacturersspecific design.9. Test Methods9.1 Test Frequency:9.1.1 The following tests listed in Table 4 shall be conducted as either Qualification or Production tes
44、ts in tests.Table 4.TABLE 4 Qualification TestsParagraph Number Test Description Type9.2 Contact Resistance Qualification9.3 Thermal Gradient Qualification9.4 Insulation Resistance Qualification9.5 Disengagement Force Qualification9.6 Repeated Cycle Test Qualification9.6 Repeated Cycles Qualificatio
45、n9.7 Service Life Test Qualification9.7 Service Life QualificationE1684/E1684M 1549.1.2 Tests listed as “Qualification” tests shall be initially performed by the manufacturer to demonstrate conformance to thisspecification, and then periodically, as determined by the manufacturer, to verify that the
46、 connectors continue to meet therequirements of this specification.9.2 Contact Resistance Test:9.2.1 Adirect current of 1.0Afrom a constant current source shall be passed through one half (for example, the positive leg)Thecontact resistance of the positive leg of a mated connector pair (see shall be
47、 measured at room temperature using a four wire ohmmeasurement as shown in Fig. 2). The voltage drop across that leg of the mated pair shall be measured and recorded. The. Theohm-meter shall have a resolution of at least 0.001 ohms and preferably an internal function for DC offset compensation. If t
48、heohm-meter does not have DC offset compensation the procedure shall be repeated on the same leg of the mated connector pair butwith reversed polarity. The The average of the two measured voltage drops shall be calculated to eliminate thermoelectrical effects.The contact resistance in ohms is then c
49、omputed by dividing the average drop in volts by the current in amperes.resistance valuesshall be taken as the contact resistance value.9.2.2 The entire procedure of 9.2.1 is then repeated for the other half (negative (the negative leg) of the same mated connectorpair.9.2.3 The contact resistance value for each leg mustshall be within the limit given in Table 1.9.2.4 Alternate test methods may be used if agreeable to both the supplier and the purchaser. In such event, the test method tobe used shall be ident
