DLA MIL-DTL-81219 C-2009 INDICATOR ELAPSED TIME ELECTROCHEMICAL.pdf
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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 6645 INCH-POUND MIL-DTL-81219C 20 April 2009 SUPERSEDING MIL-I-81219B(AS) 7 October 1987 DETAIL SPECIFICATION INDICATOR, ELAPSED TIME, ELECTROCHEMICAL Inactive for new design after 24 August 1998. This specification is
3、approved for use by all Departments and Agencies of the Department of Defense. 1 SCOPE 1.1 Scope. This specification covers the design and performance requirements for lightweight, small and low resolution electrochemical elapsed time indicators. 1.2 Part or Identifying Number. The PIN is as specifi
4、ed on the applicable MS sheet. 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 exam
5、ples. While every effort 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 o
6、r networking permitted without license from IHS-,-,-MIL-DTL-81219C 2 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these docum
7、ents are those cited in the solicitation or contract (see 6.2). DEPARTMENT OF DEFENSE STANDARDS MIL-STD-130 - Identification Marking of U S Military Property MIL-STD-202 - Test Method Standard, Electronic and Electrical Component Parts MIL-STD-889 - Dissimilar Metals MS90373 - Indicator, Elapsed Tim
8、e, Electrochemical (Copper) 115 Volt 50/2400 Hertz or 28 Volt DC MS90386 - Indicator, Elapsed Time, Electrochemical, (Mercury) 115 Volt AC 50/2400 Hertz, 28 Volt DC or 5 Volt DC (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Docu
9、ment Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related MS sheets), the text of this document takes precedence. Nothing in this document,
10、however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Materials. Materials shall conform to applicable specifications and as specified herein. Materials for which there are no applicable specifications, or which are not specifically de
11、scribed herein, shall be of the best quality, of the lightest practicable weight and suitable for the purpose intended. 3.1.1 Fungus-proof materials. Materials that are nutrients for fungi shall not be used where it is practical to avoid them. 3.1.2 Recycled, recovered, or environmentally preferable
12、 materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements and promotes economically advantageous life cycle costs. 3.1.3 Metals. Metals shall be of t
13、he corrosion resistant type or suitably treated to resist corrosion due to fuels, salt fog, or atmospheric conditions likely to be met in storage or normal service. 3.1.4 Dissimilar metals. Unless suitably protected against electrolytic corrosion, dissimilar metals as defined in MIL-STD-889 shall no
14、t be used in intimate contact with each other. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-81219C 3 3.1.5 Nonmagnetic materials. Nonmagnetic materials shall be used for all parts of the transmitter except where magnetic materials are esse
15、ntial. 3.1.6 Non-ferrous materials. Non-ferrous materials shall be used for all parts of the indicator except where ferrous materials are required. 3.1.7 Corrosive fumes. Materials used in the construction of the transmitter shall not produce corrosive or deleterious fumes under the test conditions
16、specified herein. 3.1.8 Protective treatment. When materials 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
17、 will in no way prevent compliance with the performance requirements of this specification. Protective coatings that will crack, chip, or scale with age or the extremes of climatic and environmental conditions shall not be used. 3.2 Design and construction. 3.2.1 Design. The indicator shall be in ac
18、cordance with the applicable MS drawing and the requirements specified herein. 3.2.1.1 Size. The outline dimensions shall be in accordance with the applicable MS drawing. 3.2.1.2 Indication. The type and characteristics of the indication of the elapsed time shall be in accordance with the applicable
19、 MS drawing. 3.2.1.3 Sealing. Unless otherwise specified herein, the indicating cell shall be hermetically sealed or fully encapsulated. The hermetic sealing or encapsulation shall be accomplished such that the seal will not be dependent upon materials which will be adversely affected by the action
20、of any atmosphere to which the indicator may be subjected. 3.2.1.4 Scale. The indicator scale shall be in accordance with the applicable MS drawing and 3.2.1.4.1 and 3.2.1.4.2. 3.2.1.4.1 Scale visibility. The scale shall be so designed that the full scale of the indicator can be easily read at a dis
21、tance of 18 inches. There shall be no objectionable shadow on the graduated scale with general illumination and the indication cell shall be free from defects that would prevent the indicator from being easily read. Such defects include but are not limited to scratches, cracks and chips. This requir
22、ement applies both before and after the tests specified herein. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-81219C 4 3.2.1.4.2 Divisions. The timer scale shall be divided as below: a. MS90373 at least 10 scale divisions, each correspondin
23、g to 1/10th of the full scale length. b. MS90386 as specified on the MS sheet. 3.2.1.5 Terminals. The terminals shall be solder type and shall be capable of carrying the applicable current and voltage. 3.2.1.6 Polarity. On all DC indicators and regulators, the symbol “+” shall be marked or stamped i
24、n a permanent, legible manner on or as close to the positive terminal as is practicable. 3.2.1.7 Finish. The indicator shall be finished in a durable black color. The finish shall not melt, crack, blister or scale as a result of the tests specified herein 3.2.1.8 Identification of product. Meters, a
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