1、 Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501
2、 E. 11 Mile Road, Warren, MI 48397-5000. Since contact information 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 6695 INCH-POUND A-A-52412A 04 May 2011 SUPERSEDING A-A-52412 November 3, 1992 CO
3、MMERCIAL ITEM DESCRIPTION INCLINOMETER, BALL STYLE The General Services Administration has authorized the use of this commercial item description (CID) as a replacement for MIL-I-62384A(AT) for all federal agencies. 1. SCOPE. This CID covers two types of ball-style inclinometers which are used to in
4、dicate the attitude of the vehicle with respect to the horizontal. 2. CLASSIFICATION. Inclinometers shall be of the types specified as follows (see 7.2 and 7.3): Type I - 0 to 20 degrees () scale Type II - 0 to 10 scale 3. SALIENT CHARACTERISTICS 3.1 Materials and finishes. All materials shall be co
5、rrosion-resistant type or suitably protected to resist corrosion. 3.1.1 Color. The inclinometer shall be dull black except for the rear portion behind the glass tube and marking which shall be white. 3.2 Damping fluid. The damping fluid shall be colorless and shall not interfere with satisfactory vi
6、ewing of the ball. 3.3 Design and construction. The assembly shall be constructed so that no part will work loose in service and shall be built to withstand the strains, jars, vibrations, and other conditions in shipping, storage, installation, service, and environment. Provided by IHSNot for Resale
7、No reproduction or networking permitted without license from IHS-,-,-A-A-52412A 2 3.4 Configuration. Inclinometers shall be as specified in figure 1. 3.4.1 Indicator. The indicator shall be made of black glass or similar material and be highly polished. 3.4.2 Tube. The glass tube shall be made of cl
8、ear annealed glass tubing, free from defects which may interfere with normal reading of the inclinometer. The inside of the tube shall be smooth and uniform in order to ensure that the indicator will move smoothly. The tube shall be firmly secured in the frame. An expansion chamber shall be provided
9、 at each end of the tube. The tube wall thickness shall be as follows: Type Wall thickness I 0.46 inch (in) 11.9 millimeter (mm) minimum II 0.39 in (9.9 mm) minimum 3.5 Air bubble visibility. The air bubble shall not be visible when the inclinometer is viewed from a position 12 in (300 mm) directly
10、in front of the inclinometer zero mark with the inclinometer inclined to 20 350 milliradians (mrad) for type I and 10 (175 mrad) for type II. 3.6 Scale error. Scale error of the inclinometer shall not exceed the tolerance at degrees of inclination specified in table I. Table I. Tolerance for degree
11、of inclination. Inclination Tolerance Type I degrees (mrad) Type II degrees (mrad) Type I degrees (mrad) Type II degrees (mrad) 0 (0) 0 (0) 1.0 (18) 1.0 (18) 5 (88) 5 (88) 1.5 (26) 1.5 (26) 10 (175) 10 (175) 2.0 (35) 2.0 (35) 15 (263) - - 2.5 (44) - - 20 (350) - - 2.5 (44) - - 3.7 Indicator visibili
12、ty. With the inclinometer tipped in such a manner that the indicator is at rest at either end of the tube, not less than half of the indicator shall be visible when viewed from a position 12 in (300 mm) directly in front of the zero mark of the inclinometer. 3.8 Damping. The elapsed time to move the
13、 indicator from zero mark to the maximum degree mark of the inclinometer for type I or type II shall not exceed indicator movement time at temperatures specified in table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52412A 3 Table II. Damp
14、ing time. Indicator movement time Temperature 0.5 sec 77 18 F (25 10 C) 10 sec -26 F (-32 C) 3.9 Operating temperatures. The inclinometer shall not be damaged when exposed to temperatures of -65 F (-54 C) to 158 F (70 C). 3.10 Leakage. The size of the air bubble shall show no appreciable change afte
15、r exposure to a temperature of 140 F (60 C) for 1 hour. 3.11 Relative humidity (nonoperating). The inclinometer shall not be damaged when exposed to a relative humidity of 2 percent at 155 F (68 C) and 100 percent at 86 F (30 C) for a period of 24 hours. 3.12 Atmospheric pressure (nonoperating). The
16、 inclinometer shall not be damaged when exposed to an atmospheric pressure equivalent to an altitude of 40,000 feet (ft) 12,192 meters (m). 3.13 Salt fog. The inclinometer shall not show any signs of damage after being subjected to a 5 percent saline atmosphere for a 48 hour period. 3.14 Fungus resi
17、tance. The inclinometer shall be constructed of materials that will not support fungus growth. 3.15 Shock (nonoperating). The inclinometer shall not be damaged when exposed to half-sine wave shock impulses of 25 gravity units (g) applied along three mutually perpendicular axes for 11 milliseconds an
18、d have the velocity change (Vi) of 6.8 feet per second (ft/sec) 2.1 meters per second (m/sec). 3.16 Vibration (nonoperating). The inclinometer shall not be damaged when exposed to a simple harmonic motion applied along three mutually perpendicular axes at a peak acceleration of 10 g at all frequenci
19、es within a range of 55 to 2000 hertz (Hz) for type I and a range of 20 to 2000 Hz for type II. Frequency sweep time shall be logarithmic and sweep time shall be 35 5 minutes. In addition, the inclinometer shall withstand 5 minutes vibration at each observed resonant frequency. Provided by IHSNot fo
20、r ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52412A 4 3.17 Marking. All markings shall be durable and permanent to withstand usage encountered in service and shall include the following information, as a minimum: a. Manufacturers CAGE code. b. Operation markings.
21、Type I - see figure 1 Type II - see figure 2 c. Part identification 3.18 Workmanship. The inclinometer shall be free of defects such as burrs, chips, sharp edges, cracks, unblended radii, surface defects, dirt, grease, corrosion products, or other foreign matter that would affect appearance and perf
22、ormance. All required marking shall be neat, sharply defined, and permanent. 4. REGULATORY REQUIREMENTS. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 5. PRODUCT CONF
23、ORMANCE PROVISIONS 5.1 Product conformance. The products provided shall meet the salient characteristics of this Commercial Item Description, conform to the producers own drawings, specifications, standards, and quality assurance practices, and be the same product offered for sale in the commercial
24、marketplace. The government reserves the right to require proof of such conformance. 6. PACKAGING. Preservation, packing, and marking shall be as specified in the contract or order (see 7.2). 7. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is n
25、ot mandatory.) 7.1 Addresses for obtaining copies of referenced documents. 7.1.1 Non-Government publications. IEEE/ASTM SI10, “Use of the International System of Units (SI): The Modern Metric System,” is available from www.astm.org, www.ieee.org, or ASTM International, P.O. Box C700, West Conshohock
26、en, PA 19428-2959. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52412A 5 7.2 Ordering data. Acquisition documents should specify the following: a. Title, number, and date of this CID. b. If required, the specific issue of individual documents
27、referenced (see 7.1.1). c. Specify type and PIN (see 2 and 7.3). d. Selection of applicable level of packaging requirements (see 6). 7.3 Part identification number (PIN). The PIN to be used for inclinometers acquired to this CID are as follows (see 2 and 7.2): A 52412 X Type designator 1 = Type I 2
28、= Type II CID number Designates a CID 7.4 Cross reference data. Inclinometers conforming to this CID are interchangeable/substitutable with inclinometers conforming to MIL-I-62384A(AT) (see figures 1 and 2). 7.5 Metric product. Inclinometers that are to metric dimensions will be considered on the fo
29、llowing basis: a. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest revision of IEEE/ASTM SI10, and all other requirements of t
30、his CID are met. b. If a product is manufactured to metric dimensions and those dimensions exceed the tolerances specified in the inch-pound units, a request should be made to the contracting officer to determine if the product is acceptable. c. The contracting officer has the option of accepting or
31、 rejecting the product. 7.6 Key words. Vehicle Attitude Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52412A 6 Type I Type II Type PIN Former Part Number I A 52412-1 12265593 II A 52412-2 12265594 Note: 1. Envelope tolerances are shown in maxim
32、um dimensions except for mounting holes which shall be specified in envelope. 2. Inclinometer in envelope drawings are shown for reference purposes only. 3. Dimensions are in inches DO NOT SCALE. Figure 1. Inclinometer. Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
33、ense from IHS-,-,-A-A-52412A 7 MILITARY INTERESTS: CIVIL AGENCY COORDINATING ACTIVITY GSA - FAS Custodian: Army AT Preparing Activity: DLA - GS Army - AT (Project 6695-2011-001) NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
