ARMY MIL-P-11570 C-1984 PYROMETERS INDICATING THERMOCOUPLES《热电偶指示高温计》.pdf

《ARMY MIL-P-11570 C-1984 PYROMETERS INDICATING THERMOCOUPLES《热电偶指示高温计》.pdf》由会员分享，可在线阅读，更多相关《ARMY MIL-P-11570 C-1984 PYROMETERS INDICATING THERMOCOUPLES《热电偶指示高温计》.pdf（8页珍藏版）》请在麦多课文档分享上搜索。

1、 MIL-P-11570C 66 W 9999706 0127979 2.- Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should bo addresaed to: Belvoir Research and Development Center, ATTN: 22060-5606 by using the self-addressed Standardization Docum

2、ent improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. USA STRBE-DS, Fort Belvoir, VA 30 July 1984 SUPERSEDING MIL-P-,11570B 16 October 1974 MILITARY SPECIFICATION PYROMETERS, INDICATING, THERMOCOUPLES This specification is approved for use by all Departments and

3、 Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers direct reading, indicating thermocouple pyrometers with a temperature range up to 2700 F. 1.2 Classification. as specified (see 6.2): Pyrometers shall be of the following types and classes, Type I - Portable. Type

4、II - Wall-mounted. Class I Class 2 Class 3 - Range up to 1600 F. - Range up to 2300 F. - Range up to 2700 F. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. Unless otherwise specified (see 6.21, . the following specifications and standards of the issue listed in

5、 that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation, form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL PPP-B-60 1 PPP-B-636 - Boxes, Wood, Cleated-Plywood. - Boxes, Shipping, Fiberboard. THIS DOC

6、UMENT CONTAINS - %- PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-31570C bb U 77797Ob 0327780 7 U MILITARY MIL-P-116 MIL-M-16034 STANDARDS MIL-STD-105 MIL- STD-129 MIL-STD- 130 HANDBOOKS MIL I TAY MIL-HD BK-7 5 9 MIL-P-11570C - Preserva

7、tion, Methods of. - Meters, Electrical-Indicating (Switchboard and Portable Types) . - Sampling Procedures and Tables for - Marking for Shipment and Storage. - Identification Marking of US Military Inspection by Attributes. Property. - Military Standardization Handbook, HFE Design for Army Materiel.

8、 (Copies of specifications, standards, and drawings required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the cqntracting officer.) 2.2 Other publications. The following document(s) form a part of this specificati

9、on to the extent specified herein. The issues of the documents which are indicated as DoD adopted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASIM) D 3951 - Standard Practices for Commercial Packaging. E 220 -

10、 Calibration of Thermocouples by Comparison Techniques. E 230 - Temperature Electromotive Force (EMF) Tables for Thermocouples. (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) AMERICAN NATIONAL STANDARDS INSTIT

11、UTE (ANSI) MC96.1 - Temperature Measurement Thermocouples. (Application for copies should be addressed to the Instrument Society of America, 67 Alexandria Drive, P.O. Box 12277, Research Triangle Park, NC 27709.) (Industry association specifications and standards are generally available for referenc

12、e from libraries. using Federal agencies.) They are also distributed among technical groups and 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-LL570C 66 7777906 0327983 O MIL-P-11570C 2.3 Order of precedence. In the event of a conflict betwe

13、en specification and the references cited herein, the text of this shall take precedence. 3. REQUIREMENTS 3.1 Description. The pyrometer shall consist essentially of and a thermocouple. the text of this spec if icat ion a millivoltmeter pyrometers for 3.2 First article. The contractor shall furnish

14、one or more examination and testing within the time frame specified (see 6.2) to prove prior to starting production that his production methods and choice of design detail will produce pyrometers that comply with this specification. test shall be as specified in section 4; and, unless otherwise spec

15、ified herein, all examinations and tests shall be conducted by the contractor subject to surveillance and approval by the Government (see 6.3). 6.21, the Government will conduct any or all of the first article examination and tests, as specified (see 6.2). Examination and When specified (see 3.3 Mat

16、erial. Material shall be as specified herein. Material not specified shall be selected by the contractor and shall be subject to all provisions of this specification (see 6.6). 3.4 Meter. The meter shall be a millivoltmeter and the movement of the meter shall be shielded against demagnetization. 6.2

17、1, an automatic reference junction compensator shall be provided with means for converting to manual operation. The meter shall conform to MIL-M-16034, type MR51WO75DCMV with accuracies as specified in 3.8 and 3.9, and shall be contained in a lightweight, shockproof housing. to MIL-HDBK-759, 1.2.3.1

18、 through 1.2.3.1.5.2. The housing shall protect the meter and the reference junction compensator from atmospheric conditkons normally encountered in foundries. marked as to the thermocouple for which the meter is calibrated, Unless otherwise specified (see The meter scale shall conform The meter sha

19、ll be permanently and legibly 3.5 Thermocouple. The thermocouple shall consist of 2 dissimilar metal wires. Means for identifying the wires shall be provided in accordance with ANSI MC96.1. The thermocouple shall be either protected or metal sheathed as specified (see 6.2). grounded end, as specifie

20、d (see 6.2). Protected thermocouples shall have the type and number of protection tubes provided as specified (see 6.2). A shielded or unshielded connecting block shall be provided for connecting the thermocouple to the millivoltmeter or to connecting wires or cables. be adjustable for use in any po

21、sition from the horizontal through any angle to not less than 90 degrees downward. The length of the thermocouple shall be as specified (see 6.2). The metal sheathed thermocouple shall have an exposed or The thermocouple shall 3.5.1 Connecting wires. Connecting wires shall be composed of materials t

22、hat are compatible to the thermocouple material as defined in MC96.1 with limits of error as specified in ASTM E 230. 3.6 Identification marking. Each pyrometer shall be identified in accordance with MIL-STD-130. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license

23、from IHS-,-,-I MIL-P-33570C bb W 999790b 0327982 2 W I MIL-P-11570C 3.7 Finishing. Each pyrometer and its case shall be finished in accordance with the contractors standard practice. 3.8 Type I - portable. Type I pyrometers shall be an integral unit and shall be provided with a comfortable handle. p

24、lus or minus 1 percent of reading based on an impressed voltage input to an indicated reading. Type I meters shall have an accuracy of 3.9 Type II - wall-mounted. a thermocouple and a meter connected by an electric cable. shall be provided with a means for mounting on a wall. specified (see 6.21, th

25、e length of the connecting cable shall be 10 feet. II meters shall have an accuracy of plus or minus 0.50 percent of reading based . on an impressed voltage input to an indicated reading. Type II wall-mounted pyrometers shall consist of The meter housing Unless otherwise Type 3.10 Class 1. 3.10.1 Me

26、ter. 3.10.2 Thermocouple. The meter shall have a scale range of 32“ F to 1600“ F. The thermocouple shall be type E in accordance with ANSI MC96.1 and its accuracy shall conform to ASTM E 230. 3.11 Class 2. 3.11.1 Meter. 3.11.2 Thermocouples. The meter shall have a scale range of 32“ F to 2300 F. The

27、 thermocouples shall be type K in accordance with ANSI MC96.1 and its accuracy shall conform to ASTM E 230. 3.12 Class 3. 3.12.1 Meter. 3.12.2 Thermocouple. The meter shall have a scale range of 32 F to 2700“ F. The thermocouple shall be type R in accordance with ANSI MC96.1. Thermocouple accuracy s

28、hall conform to ASTM E 230. 3.13 Workmanship. The pyrometers shall be free from such defects as cracks, scratches, dents, or other defects which could impair operation or serviceability. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or

29、purchase order, the contractor is responsible for the performance of all inspection requirements specified herein. the contract or order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Gov

30、ernment. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as otherwise specified in 4 Provided by IHSNot for ResaleNo reproduction

31、or networking permitted without license from IHS-,-,-MIL-P-LL570C 66 m 7777906 0327983 4 m MIL-P-11570C 4.1.1 Component and material inspection. The contractor is responsible for insuring that components and materials used are manufactured, examined, and tested in accordance with referenced specific

32、ations and standards. 4.2 Classification of inspections. Inspections shall be classified as . f 01 lows : a. b. c. Inspection of preparation for delivery (see 4.6). First article inspection (see 4.3). Quality conformance inspection (see 4.4). 4.3 First article inspection. 4.3.1 Examination. The firs

33、t article pyrometers shall be examined as specified in 4.5.1. Presence of one or more defects shall be cause for reject ion. 4.3.2 Tests. The first article pyrometers shall be tested as specified in 4.5.2.1. Failure of any test shall be cause for rejection. 4.4 Quality conformance inspection. 4.4.1

34、Sampling. Sampling for examination and test shall be in accordance with MIL-STD-105, inspection level III. 4.4.2 Examination. Samples selected in accordance with 4.4.1 shall be examined for the defects specified in 4.5.1. shall be 1.5 percent defective. Acceptable quality level (AQL) 4.4.3 Tests. Sa

35、mples selected in accordance with 4.4.1 shall be tested as specified in 4.5.2.1. AQL shall be 4.0 percent defective. 4.5 Inspection procedure. 4.5.1 Examination. Pyrometers shall be examined for the following defects. Presence of one or more defects shall be cause for rejection. MAJOR 101. 102. Mete

36、r housing not as specified. 103. 104. 105. Workmanship not as specified. 106. Identification marking not as specified, incomplete, or illegible. Meter not shielded against demagnetization. Type I pyrometers not provided with a handle. Type II pyrometers not provided with a means for wall mounting. 4

37、.5.2 Tests. Samples selected in accordance with 4.4.1 shall be subjected to the following test. Failure of the test shall be cause for rejection. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-11570C 4.5.2.1 Thermocouple. The thermocouple sh

38、all be tested in accordance with applicable provisions of ASTM E 220 with accuracy as defined in 3.10.2, 3.11.2 and 3.12.2. Nonconformance with these accuracy requirements shall constitute failure of this test. 4.6 Inspection of packaging. 4.6.1 Quality conformance inspection of pack. 4.6.1.1 Unit o

39、f product. For the purpose of inspection, a completed pack prepared for shipment shall be considered a unit of product. 4.6.1.2 Sampling. Sampling for examination shall be in accordance with MIL-STD-105. 4.6.1.3 Examination. Samples selected in accordance with 4.6.1.2 shall be examined for the follo

40、wing defects. AQL shall be 2.5 percent defective. 107. Preservation not as specified for level A. 108. Boxes not closed and sealed by method specified for level A preservation. 109. Packing not as specified for level A or B. 110. Preservation and packing not in accordance with the referenced documen

41、t as specified for commercial. 111. Marking missing, illegible, incorrect, or incomplete for level A, B, or commercial. 5. PACKAGING 5.1 Preservation. Preservation shall be level A or commercial, as specified (see 6.2); 5.1.1 Level A. Each complete pyrometer with the instructions shall be preserved

42、in accordance with MIL-P-116, method IIb. be the contractors standard carton or a close-fitting box conforming to PPP-B-636, type CF, class domestic, variety SW, grade 125. shall conform to PPP-B-636, WC, or WC, style optional. The box shall be closed and sealed as specified for method V in the appe

43、ndix of the box specification. - The inner container shall The outer container 5.1.2 Commercial. Each complete pyrometer with the instructions shall be preserved in accordance with ASTM D 3951. 5.2 Packing. Packing shall be level A, B, or commercial, as specified (see 6.2). 5.2.1 Level A. Pyrometers

44、 of like description, preserved as specified in 5.1, shall be packed together in a close-fitting box conforming to PPP-B-601, overseas type, style optional. with the appendix to the box specification. Box closure and strapping shall be in accordance 6 Provided by IHSNot for ResaleNo reproduction or

45、networking permitted without license from IHS-,-,- MIL-P-22570C 66 m 9777706 0227985 m MIL-P-11570C 5.2.2 Level B. Pyrometers of like description, preserved as specified in 5.1, shall be packed as specified in 5.2.1, except that boxes shall be domestic type. As an alternate, boxes conforming to PPP-

46、B-636, VC, Vllc, V13c, or V15c may be used when the quantity to be packed does not exceed the gross weight or size limitation of the box. with appendix to the applicable box specification. Box closure and strapping shall be in accordance O 5.2.3 Commercial. Pyrometers, preserved as specified in 5.1,

47、 shall be packed in accordance with ASTM D 3951. 5.3 Marking. 5.3.1 Military. Marking for military levels of protection (level A or B) shall be in accordance with MIL-STD-129. 5.3.2 Commercial. Marking for commercial packaging shall be in accordance with ASTM D 3951. shipping container. In addition,

48、 weight and cube data shall be marked on the 6. NOTES 6.1 Intended use. The pyrometers are intended for use in determining the temperature of molten metals. Type I pyrometer is intended for use where portability is required and type II is intended for use in a permanent location. Class 1 pyrometers

49、are intended for use with tin, zinc alloys, lead alloys, and magnesium alloys. Class 2 pyrometers are for use with brass, bronze, and aluminum alloys. Class 3 pyrometers are for use with nickel-base alloys and steel alloys. The protected thermocouple is intended for use where the molten metal contains slag, dross, or other contaminating matter on the surface. The open-end thermocouple is for use with metals which are excellent conduct