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    DLA MIL-DTL-27190 C-2006 INDICATOR PRESSURE AGU-3 A HYDRAULIC 0-4 000 PSI《0-4 000 PSI液压力AGU-3 A指示器》.pdf

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    DLA MIL-DTL-27190 C-2006 INDICATOR PRESSURE AGU-3 A HYDRAULIC 0-4 000 PSI《0-4 000 PSI液压力AGU-3 A指示器》.pdf

    1、Comments, suggestions, or questions on this document should be addressed to Defense Supply Center Richmond, ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616 or e-mailed to STDZNMGTdla.mil. Since contact information can change, you may want to verify the currency of this address

    2、information using the ASSIST database at http:/assist.daps.dla.mil. AMSC N/A FSC 6685 INCH-POUND MIL-DTL-27190C 19 December 2006 SUPERSEDING MIL-I-27190B 31 October 1967 DETAIL SPECIFICATION INDICATOR, PRESSURE AGU-3/A, HYDRAULIC, 0-4,000 PSI Inactive for new design after 24 March 1999. This specifi

    3、cation is approved for use by all departments and agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers one type of hermetically sealed, remote-indicating, synchro-type, integrally lighted, 0-4,000 pounds per square inch (psi) hydraulic pressure indicator, designated A

    4、GU-3/A. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 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 effor

    5、t has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of the documents cited in sections 3 and 4 of this specification, whether or not they are listed. Provided by IHSNot for ResaleNo reproduction or networking permitted

    6、without license from IHS-,-,-MIL-DTL-27190C 2 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 specified herein. Unless otherwise specified, the issues of these documents are th

    7、ose cited in the solicitation or contract (see 6.2). FEDERAL STANDARDS FED-STD-595 - Colors Used in Government Procurement (Color chips 37038 and 37875). DEPARTMENT OF DEFENSE SPECIFICATIONS MS3134 - Connector, Receptacle, Electric, Solder Type, Jam Nut Mounting, Push-Pull Coupling, Series 1 (Class

    8、E, P, J and H). MS3137 - Connector, Plug, Electric, Solder Type, Push-Pull Coupling Series I (Class E, P and J). MIL-DTL-5541 - Chemical Conversion Coatings on Aluminum and Aluminum Alloys. MIL-S-7742 - Screw Threads, Standard, Optimum Selected Series: General Specification for. MIL-A-8625 - Anodic

    9、Coatings for Aluminum and Aluminum Alloys. MIL-T-25307 - Transmitter, Pressure, Hydraulic, Type MJ-1. MIL-L-27160 - Lighting, Instrument, Integral, White General Specification for. MS33639 - Cases, Instrument, Clamp-Mounted, Aircraft. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-130 - Identification Mark

    10、ing of U.S. Military Property. MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment. MIL-STD-810 - Environmental Engineering Considerations and Laboratory Tests. MIL-STD-889 - Dissimilar Metals. DEPARTMENT OF DEFENSE HANDBOOKS MIL-HDB

    11、K-781 - Reliability Test Methods, Plans, and Environments for Engineering, Development, Qualification and Production. MIL-HDBK-831 - Preparation of Test Reports. (Copies of these documents are available at http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue,

    12、 Building 4D, Philadelphia, PA 19111-5094.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27190C 3 2.2.2 Other government documents, drawings, and publications. The following other government documents, drawings, and publications form a par

    13、t 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). STANDARDIZATION DOCUMENTS SD-6 - Provisions Governing Qualification. (Copies of these documents are available at http:/assist.daps.d

    14、la.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 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 t

    15、hose cited in the solicitation or contract (see 6.2). ASME INTERNATIONAL ASME Y14.100 - Engineering Drawing Practices. (Copies of these documents are available at http:/www.asme.org/ or from ASME International, Three Park Avenue, New York, NY 10016-5990.) SAE INTERNATIONAL SAE AS20708 - Synchros, Ge

    16、neral Specification for. (Copies of these documents are available at http:/www.sae.org/ or from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of th

    17、is document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. Hydraulic pressure indicators furnished under this specification shall be products that are authorized by the

    18、qualifying activity for listing on the applicable qualified products list before contract award (see 4.3 and 6.3). 3.2 Materials. 3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent poss

    19、ible provided that the material meets or exceeds the operational and maintenance requirements and promotes economically advantageous life cycle costs. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27190C 4 3.2.2 Non-magnetic materials. Non-

    20、magnetic materials shall be used for all parts of the indicator, except where magnetic materials are essential. 3.2.3 Non-ferrous materials. Non-ferrous materials shall be used for all parts of the indicator, except where ferrous materials are essential. 3.2.4 Metals. Metals shall be corrosion-resis

    21、tant or suitably treated to resist corrosion due to fuels, salt spray, or atmospheric conditions likely to be met in storage or normal service. 3.2.5 Dissimilar metals. Unless suitably protected against electrolytic corrosion, dissimilar metals shall not be used in intimate contact with each other.

    22、Dissimilar metals are defined in MIL-STD-889. 3.2.6 Toxic and corrosive fumes. The indicator shall be of such material and construction that when burned, fumes or gases that combine with the atmosphere to form acid or corrosive alkali will not be released. 3.2.7 Protective treatment. When materials

    23、are used in the construction of the indicator that are subject to deterioration when exposed to climatic and environmental conditions likely to occur during service usage, they shall be protected against such deterioration in a manner that will in no way prevent compliance with the requirements of t

    24、his specification. The use of any protective coating that will crack, chip, or scale with age or extremes of climatic and environmental conditions shall be avoided. 3.3 Design and construction. The indicator shall be designed for use with the type MJ-1 transformer conforming to MIL-T-25307. 3.3.1 Ca

    25、se. The case shall be hermetically sealed and the dimensions shall conform to MS33639 for the 1-inch size. Dimension L shall be 3.00 inches 0.25 inch. 3.3.1.1 Cap. A separate nonhermetically sealed cap may be used on the back of the case for installing the electrical receptacle. The cap shall be mad

    26、e of nonferrous low-density metal. 3.3.1.2 Case-to-cover glass distance. The distance between the outer surface of the cover glass and the front edge of the case shall be the minimum practicable and shall not exceed 1/32 inch. 3.3.1.3 Filling medium. The filling medium shall be of at least 98 percen

    27、t purity, free of dust particles, and shall contain no more then 0.006 milligram (mg) of water vapor per liter (dew point -65 C) at the filling pressure. The filling medium shall be 88 percent to 92 percent nitrogen and the remainder helium. The absolute pressure of the filling medium in the case sh

    28、all be 12 psi to 14.7 psi. Other concentrations of helium shall not be used except with prior approval of the procuring activity. 3.3.2 Lighting. The dial and pointer shall be integrally lighted in accordance with MIL-L-27160 and shall meet all requirements specified herein. Provided by IHSNot for R

    29、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27190C 5 3.3.3 Pointer. The pointer shall conform to figure 1 and shall be suitable for integral lighting. The length shall be such that the tip of the pointer will extend into the scale a distance equal to 1/3 to 2/3

    30、the length of the shortest graduation. 32401X 1000HYD40 0 15ELECTRICAL ZEROREFERENCE MARKDIAL0.093POINTERSHADED AREA WHITEMAX3162764764Dimensions in inches. Unless otherwise specified, tolerances: fractions 1/64; decimals 0.010. FIGURE 1. Dial and pointer. 3.3.3.1 Pointer finish. The lighted portion

    31、 of the pointer shall be finished in accordance with FED-STD-595, color number 37875. 3.3.4 Dial. The dial shall conform to figure 1. A minimum diameter of 15/16 inch shall be maintained across the outside of the graduations. The 2,000-psi graduation shall be located on the horizontal centerline at

    32、the left side of the dial. The graduation for each 500-psi increment shall be 40 degrees 0 degrees 15 minutes apart. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27190C 6 3.3.4.1 Dial markings. The dimensions and colors of the dial marking

    33、s shall be in accordance with table I. Colors shall conform to FED-STD-595. TABLE I. Dial marking dimensions and colors. Height or length in inches 1/64 inchWidth of line or graduation in inches 0.005 inch Color number Numerals 0, 1, 2, 3, 4 3/32 0.0213 37875 Graduations at 0, 1,000, 3,000, 4,000 7/

    34、64 0.030 37875 Graduation at 2,000 3/32 0.030 37875 500-psi graduations 1/16 0.015 37875 Lettering “HYD“ 5/64 0.015 37875 Lettering “X1000“ 5/64 0.010 37875 Background of dial - - 37038 3.3.4.2 Finish of markings not specified. The finish of markings not otherwise specified shall be in accordance wi

    35、th FED-STD-595, color number 37038. 3.3.4.3 Dial visibility. Portions of the minor graduations on the dial shall be visible when viewed from any position within the frustum of a cone, the side of which intersects the outer edge of the cover glass and makes an angle of 30 degrees with the perpendicul

    36、ar through the center of the dial. 3.3.4.4 Dial-to-cover glass distance. The distance between the indicator dial and the inside of the cover glass shall be the minimum practicable and shall not exceed 0.188 inch. 3.3.5 Filler tube. A tube or other facility for evacuating and filling the case shall b

    37、e provided at the rear of the case and shall be recessed beneath the level of the back plate surface. If a tube is used, it shall be of such length as to permit three refillings of the case. 3.3.6 Cover glass. The cover glass shall be clear, flat, and free from flaws that would interfere with the no

    38、rmal reading of the instrument. The thickness of the cover glass shall be the minimum practicable and suitable for the purpose. 3.3.7 Fasteners. The dial shall be securely fastened to the frame of the mechanism in such a manner that it will not loosen or turn when the indicator is vibrated. If screw

    39、s are used for attaching the dial, they shall be located so that they will not interfere with dial markings or prevent the markings from being located in the proper position. 3.3.8 Electrical zero reference mark. The dial shall be provided with an electrical zero reference mark on the scale portion

    40、equidistant in angular degrees between the first and last dial graduations. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27190C 7 3.3.9 Electrical connector. The indicator shall be provided with an electrical connector, MS3134H-7P or equiv

    41、alent, to mate with MS3137E7-50S or equivalent. 3.3.10 Electrical wiring. The internal and external wiring of the indicator shall be in accordance with figure 2. 3.3.11 Indicator synchro. The indicator synchro shall consist of a salient two-pole wound rotor used as the primary and shall be designate

    42、d for 26 volt (V), 400-cycle, single-phase power, with Y-connected stators as the secondaries. The stators shall be wound so the amplitudes of the induced voltages measured between any two stator leads will vary approximately sinusoidally with the angular positions of the rotor. Pivots, bearings, an

    43、d gears shall not bind or shake and shall be as nearly frictionless as possible. 3.3.11.1 Synchro receiver. The synchro receiver used shall have electrical characteristics compatible with those defined in SAE AS20708. 3.3.12 Secondary voltage. The maximum open-circuit voltage measured between any tw

    44、o secondary leads shall be 11.8 V 3 percent. 3.3.13 Reliability. The indicator shall have a minimum mean-time-between-failures (MTBF) of 2,000 hours based upon a discrimination ratio of 1.5 and a confidence factor of 90 percent when tested as specified in 4.5.24. 3.3.14 Longevity. The indicator shal

    45、l have an operating life span of 3,000 hours. 3.4 Performance. The indicator shall operate satisfactorily after subjection to the following conditions: a. Temperatures ranging from -65 C to 71 C. b. Vibration of 2 g from 5 cycles per seconds (cps) to 500 cps. c. Pressure altitude of 100,000 feet at

    46、-55 C. d. Eight cycles of alternate immersion in tap water at 85 C 2 C and 5 C 2 C. e. Exposure to salt sea atmosphere for 48 hours without evidence of corrosion or deterioration. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27190C 8 BLUEY

    47、ELLOWREDBLACKABCDLAMPS (TYP)26V, 4005VLIGHTING76 43 21SINGLE PHASEINDICATOR AGU-3/AFIGURE 2. Wiring diagram. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-27190C 9 3.4.1 Tolerances. The indicator shall operate within the tolerances specifie

    48、d in tables II and III. TABLE II. Scale error tolerances. PSI Tolerance psi 0 50 500 50 1,000 50 1,500 50 2,000 50 2,500 50 3,000 50 3,500 50 4,000 50 TABLE III. Test tolerances. Test Tolerance psi Position error at 2,500 psi 25 Friction: Room temperature 50 High temperature 50 Low temperature 75 Vi

    49、bration: Pointer oscillation 50 Pointer variation 50 3.4.2 Dielectric strength. The indicator shall withstand 200V root square mean (rms) at a commercial frequency for a period of 5 seconds. 3.4.3 Case leakage. Case leakage shall not exceed 0.1 micron cubic foot per hour. 3.4.4 Fogging. There shall be no evidence of moisture or o


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