1、 Comments, suggestions, or questions on this document should be addressed to U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or emailed to DAMI_STANDARDIZATIONconus.army.mil. Since contact i
2、nformation can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 6685 INCH-POUND MIL-PRF-62430B 14 April 2010 SUPERSEDING MIL-PRF-62430A(AT) 26 July 1996 PERFORMANCE SPECIFICATION HARNESS ASSEMBLY, THE
3、RMOCOUPLE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers four types of thermocouple harness assemblies, hereinafter referred to as the harness. 1.2 Classification. Harnesses are of the following types
4、 (see 6.2): Type I - Differentiating characteristics in accordance with Drawing 12302361 and as specified herein. Type II - Differentiating characteristics in accordance with Drawing 12302362 and as specified herein. Type III - Differentiating characteristics in accordance with Drawing 12302363 and
5、as specified herein. Type IV - Differentiating characteristics in accordance with Drawing 12302438 or Drawing 12472667 and as specified herein. 1.3 Part or identifying number (PIN). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62430B 2 M 6
6、2430 - X Type: 1 - According to Drawing 12302361 2 - According to Drawing 12302362 3 - According to Drawing 12302363 4 - According to Drawing 12302438 or Drawing 12472667 Specification number Prefix 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3
7、, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet
8、all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent spec
9、ified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). COMMERCIAL ITEM DESCRIPTIONS A-A-59133 - Cleaning Compound, High Pressure (Steam) Cleaner A-A-52557 - Fuel Oil, Diesel DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-5624
10、- Turbine Fuel, Aviation, Grades JP-4 and JP-5 MIL-PRF-6083 - Hydraulic Fluid, Petroleum Base, for Preservation and Operation MIL-PRF-23699 - Lubricating Oil, Aircraft Turbine Engine, Synthetic Base, NATO Code Number 0-156 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-810 - Environmental Test Methods MIL-
11、STD-882 - System Safety Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62430B 3 DEPARTMENT OF DEFENSE HANDBOOKS MIL-HDBK-454 - General Guidelines for Electronic Equipment MIL-HDBK-759 - Human Engineering Design Guidelines (Copies of these do
12、cuments are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, an
13、d publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). U.S. ARMY TACOM DRAWINGS 12284516 - Rear Engine, Sub-Assembly 12302361 - Harness Assembly, Thermocouple 123
14、02362 - Harness Assembly, Thermocouple 12302363 - Harness Assembly, Thermocouple 12302438 - Harness Assembly, Electrical, Molded 12472667 - Harness Assembly, Electrical, Molded (Copies of these documents are available from DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Resea
15、rch, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are
16、 those cited in the solicitation or contract (see 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI/ASQ Zl.4 - Sampling Procedures and Tables for Inspection by Attributes (DoD Adopted) ANSI/SAE AS478 - Identification Marking Methods. (DoD Adopted) (Copies of these documents are available from
17、ANSI Customer Service Department, 25 W. 43rd Street, 4th Floor, New York, NY 10036 (or website: http:/www.ansi.org/) or American Society for Quality, 600 North Plankinton Avenue, Milwaukee, WI 53203 (or website: http:/www.asq.org/) or Society of Automotive Engineers (SAE) 400 Commonwealth Drive, War
18、rendale, PA 15096-0001 (or website http:/www.sae.org/).) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62430B 4 ASTM INTERNATIONAL ASTM E230 - Standard Temperature - Electromotive Force (EMF) Tables for Standardized Thermocouples (Copies of
19、 these documents are available from www.astm.org or ASTM International, P.O. Box C700, West Conshohocken, PA 19428-2959.) SAE INTERNATIONAL SAE AMS 3216 - Fluorocarbon (FKM) Rubber High-Temperature - Fluid Resistant Low Compression Set 70 to 80 (Copies of these documents are available from www.sae.o
20、rg or SAE Customer Service, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing
21、 in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Differentiating characteristics. The harnesses shall conform to the following (see 4.5.2): Type I - Differentiating characteristics in accordance with Drawing 123
22、02361 and as specified herein Type II - Differentiating characteristics in accordance with Drawing 12302362 and as specified herein Type III - Differentiating characteristics in accordance with Drawing 12302363 and as specified herein Type IV - Differentiating characteristics in accordance with Draw
23、ing 12302438 or Drawing 12472667 and as specified herein 3.2 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.3. 3.3 Materials. Materials shall be as specified herein and as noted on the applicable drawing. Materials not designated
24、 on the drawing or specifically covered by this specification shall be uniform in quality and free from imperfections or defects which affect their serviceability (see 4.5.1). Thermocouple conductors, sockets, connector inserts, and potting material shall be impervious to the environments and condit
25、ions encountered during service. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62430B 5 3.3.1 Fluid resistance. All materials used in the harness shall be impervious to fluids in accordance with A-A-59133, A-A-52527, MIL-DTL-5624, MIL-PRF-6
26、083, and MIL-PRF-23699 (see 4.5.1). 3.3.2 Corrosion resistance. All external surfaces shall have corrosion resistance at least equivalent to anodized aluminum. Also, there should be no direct contact between dissimilar metals (see 4.5.1). 3.3.3 Thermocouple wire. The thermocouple wire shall be chrom
27、el and alumel and shall have an accuracy of 0.75 percent from 752 to 1832 degrees Fahrenheit (F) (400 to 1000 degrees Celsius (C) (see 4.5.1). 3.3.4 Connector Inserts. Connector insert material shall be fluorocarbon in accordance with SAE AMS 3216 (see 4.5.1). (Applicable to type IV harnesses only.)
28、 3.3.5 Potting. Where applicable, epoxy shall be used in the area where sockets and conductors are connected, to provide additional support (see 4.5.1). 3.3.6 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to
29、the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs (see 4.5.1). 3.4 Design and construction. 3.4.1 Configuration. The harness shall conform to the applicable drawing (see 4.5.1
30、and 4.5.2). 3.4.1.1 Schematic arrangement. The schematic arrangement for the harness shall be as defined on the applicable drawing (see 4.5.1 and 4.5.2). 3.4.1.2 Interface definition. Electrical and mechanical interfaces shall be as defined on the applicable harness drawing and Drawing 12284516 (see
31、 4.5.1 and 4.5.2). 3.4.2 Weight. The weight of the harness shall not exceed 1.0 pounds (lb) (454 grams (g) (see 4.5.1 and 4.5.2). 3.4.3 Thermocouple probes. Thermocouple probes shall be closed and ungrounded with a recovery factor of less than 0.75 (see 4.5.1 and 4.5.2). 3.5 Performance. 3.5.1 Indiv
32、idual circuit resistance. The individual circuit resistance between connector contact A and any other contact (except F) at 70 F (21 C), shall be in accordance with the following (see 4.5.2): Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62
33、430B 6 a. Type I - 3.19 to 3.67 ohms b. Type II - 5.04 to 5.80 ohms c. Type III - 5.37 to 6.17 ohms d. Type IV - As defined on applicable engineering drawing. 3.5.2 Average circuit resistance. The average circuit resistance between connector contact A and all other contacts (except F) shorted togeth
34、er at 70 F (21 C) shall be in accordance with the following (see 4.5.2): a. Type I - 1.92 to 2.28 ohms b. Type II - 3.43 to 3.95 ohms c. Type III - 3.69 to 4.25 ohms d. Type IV - As defined on applicable engineering drawing. 3.5.3 Insulation resistance. The insulation resistance between the circuits
35、 and connector shells and outer braid shall be not less than 25,000 ohms at 250 volts direct current (Vdc) (see 4.5.3). 3.5.4 Output signal. The individual thermocouples shall have an output signal in accordance with ASTM E230 (see 4.5.4). 3.5.4.1 Output signal accuracy. Each individual thermocouple
36、 shall produce an output signal within 11 F (6 C) of the applied temperature, when the thermocouple junction is subjected to an applied temperature of 111218 F (60010 C) (see 4.5.4. 1). 3.5.5 Leakage. The full length of sensing probe sheath shall be free of flaws or holes that would allow fuel leaka
37、ge to enter the inner insulation. The leakage rate shall not exceed 1.83 cubic inches per minute (in3/min) (3000 cubic centimeters per minute (cm3/min) at 20010 pounds per square inch (psi) (137969 kilopascals (kPa) (see 4.5.2). 3.5.6 Reliability. When operated within the specified environmental and
38、 operational stress use envelope, the assembly shall exhibit a Mean-Time-Between-Failure (MTBF) equal to or greater than 10,000 hours (see 4.5.5). 3.6 Environmental conditions. 3.6.1 High temperature. The harness shall meet the specified performance requirements when exposed to the following tempera
39、tures (see 4.5.6.1 and 4.5.6.1.1): a. Electrical connectors - not greater than 400 F (204 C) b. Harness and leads - not greater than 1200 F (649 C) c. Thermocouple probes - 180050 F (98228 C) 3.6.2 Low temperature. The harness shall meet the specified performance requirements when exposed to a tempe
40、rature of -6010 F (-516 C) for 4 hours (see 4.5.6.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62430B 7 3.6.3 Altitude. The harness shall meet the specified performance requirements when exposed to an altitude of 1300 feet (ft) (396 me
41、ters (m) below sea level to 10,000 ft (3048 m) above sea level (see 4.5.6.3). 3.6.4 Humidity. The harness shall meet the specified performance requirements, and shall evidence no corrosion or other defects which would affect the function or structural strength, when exposed to 0 to 100 percent (%) r
42、elative humidity (see 4.5.6.4). 3.6.5 Salt fog. The harness shall meet the specified performance requirements when exposed to a salt fog (see 4.5.6.5). 3.6.6 Sand and dust. The harness shall meet the specified performance requirements when exposed to blowing dust (fine sand) (see 4.5.6.6). 3.6.7 Fun
43、gus. The harness shall not promote the growth of fungus (see 4.5.6.7). 3.6.8 Vibration. The harness shall meet the specified performance requirements when subjected to vibration having levels in accordance with figure 1 from 25 to 500 to 25 Hertz (Hz) (see 4.5.6.8). FIGURE 1. Peak vibration envelope
44、. 3.6.9 Gun-firing shock. The harness shall meet the specified performance requirements without malfunction when subjected to shocks of 555.5 gravity units (g) (53954 meters per second squared (m/s2) for 2.50.2 milliseconds (ms) duration in any direction (see 4.5.6.9). 3.6.10 Ballistic shock. The ha
45、rness shall meet the specified performance requirements without malfunction when subjected to half sine wave shock pulses of 20020 g (1960196 m/s2) for 0.50.1 ms duration in any direction (see 4.5.6.10). 234515 100502510 500 1000F R EQ UE NC Y (H z)ACCELERATION(g)0.030InchDAProvided by IHSNot for Re
46、saleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62430B 8 3.6.11 Basic shock. The harness shall meet the specified performance requirements without malfunction when subjected to half sine wave shock pulses of 303 g (29429 m/s2) for 18 ms duration in any direction (see
47、 4.5.6.11). 3.6.12 Submergence. The harness shall meet performance requirements after submergence in water (see 4.5.6.12). 3.7 Identification marking. Identification marking shall be in accordance with ANSI/SAE AS478 and as noted on the applicable drawing (see 4.5.2). 3.8 Workmanship. MIL-HDBK-454,
48、Guideline 9 (Workmanship) shall be used as guidance for workmanship for the harnesses (see 4.5.7). 3.9 Safety. MIL-STD-882 and MIL-HDBK-759 shall provide design guidance for design safety review, safety hazard levels, safety precedence, analysis, action on identified hazards, and safety testing (see
49、 4.5.8). 4. VERIFICATION 4.1 Classification of inspections. Inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3) b. Conformance inspections (see 4.4) 1. Examination (4.4.2) 2. Acceptance tests (see 4.4.3) 4.2 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shal
