1、INCH-POUNDI MIL-T-l9646A(SH) 8 February 1990 SUPERSEDING 5 December 1956 (See 6.12) MIL-T-l9646(SHIPS) MILITARY SPECIFICATION THERMOMETER, GAS ACTUATED, REMOTE READING This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Dep
2、artments and Agencies of the Department of Defense. “ l. SCOPE 1.1 ScoDe. This specification covers environmentally hardened thermometers which utilize an elastic element to measure the pressure within a gas filled closed system (thermal system) and convert this pressure to an analog temperature ind
3、ication on a circular dial. Remote reading is accomplished by connecting the analog temperature indicator to the thermometer bulb by a specified length of capillary tubing. The gas actuated thermometer bulb is configured for either direct immersion or insertion into a thermowell. 1.2 Classification.
4、 Gas actuated thermometers shall be classified according to the following variables, as specified (see 6.2): (a) Sensor configuration (see 1.2.1). (b) Range (see 1.2.2). (c) Dial size (see 1.2.3). (d) Capillary tubing length (see 1.2.4). 1.2.1 Sensor confinuration. - The sensor configuration shall b
5、e designated by two symbols; the first symbol shall designate the class and the second symbol the subclass. The class, designated by the letter A, B, or C, identifies the sensor type and mounting method (see 3.3.2.1.1). The subclass, designated by a number, identifies the physical dimensions of the
6、individual sensors. Class A has only one subclass and shall be designated as Al. Class B has six subclasses as shown op figure 1. Class C has four subclasses as shown on figgre 2. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this
7、 document should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DG 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter AMSC N/A FSC 6685 DISTRIBUTI
8、ON STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-“ . . MIL-T-LSb4bA h6 .777770b 04LB005 L m MIL-T- 9646A( SH) 1.2.2 RanJze. The range shall be designated by the sequence of symbol
9、s listed in table IV. The range shall be selected for a particular sensor con- figuration class only if that range is specified for the particular sensor configuration class in table IV. 122.3 Dial size. The dial size shall be designated by one of the following symbols : Dial size Symbol 3 - 1/2 4-
10、1/2 8 - 1/2 3 4 8 1.2.4 Capillarv tubing length. The capillary tubing length selected is designated by its nukerical value in units of feet (see 3.3.2.2). 1.3 Part or Identifving Number (PINI. A specification-based PIN.to identify sensor configuration, range, dial size, and capillary tubing.length i
11、s included in sectton 6 (see 6.10). 2. APPLICABLE DOCUMENTS 2.1 Government documents, 2.1.1 SDecifications. standards, and handbooks. The following specifica- tions, standards, and handbooks form a part of this document to the extent specified herein, Unless otherwise specified, the issues of these
12、documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL QQ-N-286 UU-P-268 PPP-B-566 PPP-B-636 PPP-B-640 PPP-B-665 PPP-B-676 PPP-C-850 PPP-c-1120 - Nickel-Co
13、pper-Aluminum Alloy, Wrought (UNS NOSSOO). - Paper, Kraft, Wrapping. - Boxes, Folding, Paperboard. - Boxes, ShTpping, Fiberboard. - Boxes, Fiberboard, Corrugated, Triple-Wall. - Boxes: Paperboard, Metal Edged and Components. - Boxes, Setup. - Cushioning Material, Polystyrene, Expanded, Resilient - C
14、ushioning Material, Uncompressed Bound Fiber for (for Packaging Uses). Packaging. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILITARY MIL-P-116 - Preservation, Methods of. MIL-B-117 - Bags, Sleeves and Tubing. MIL-S-901 - Shock Tests, H.I. (Hi
15、gh-Impact); Shipboard Machinery, MIL-P-5425 - Plastic Sheet, Acrylic, Heat Resistant. MIL-C-5541 - Chemical Conversion Coatings on Aluminum and Aluminum MIL-R-613Q - Rubber, Cellular, Chemically Blown. MIL-B-7883 - Brazing of Steels, Copper, Copper Alloys, Nickel MIL-A-8625 - Anodic Coatings, For Al
16、uminum and Aluminum Alloys. MIL-E-15090 - Enamel, Equipment, Light-Gray (Formula No. 111). MIL-R-20092 - Rubber or Plastic Sheets and Assembled and Molded MIL-S-22473 - Sealing, Locking and Retaning Compounds: (Single MIL-T-24270 - Thermowells for Thermometdrs and Electrical Tempera- MIL-P-26514 - P
17、olyurethane Foam, Rigid or Flexible, for Packaging. MIL-R-83248 - Rubber, Fluorocarbon Elastomer, High Temperature, Fluid, and Compression Set Resistant. Equipment and Systems, Requirements for. Alloys. Alloys, Aluminum and Aluminum Alloys. Shapes, Synthetic, Foam or Sponge, Open Cell. Component). t
18、ure Sensors, General Specification for. STANDARDS FEDERAL FED-STD-H28 - Screw-Thread Standards for Federal Services. FED-STD-313 - Material Safety Data, Transportation Data and Disposal Data for Hazardous Materials Furnished to Government Activities. MILITARY MIL-STD-22 - Welded Joint Design. MIL-ST
19、D-108 - Definitions of and Basic Requirements for Enclosures MIL-STD-129 - Marking for Shipment and Storage. MIL-STD-130 - Identification Marking of U.S. Military Property. MIL-STD-278 - Welding and Casting Standard. for Electric and Electronic Equipment. (Unless otherwise indicated, copies of feder
20、al and military specifications, standards, and handbooks are available from the Naval Publications and Forms Center, (ATTN: NPODS), 5801 Tabor Avenue, Philadelphia, PA 19120-5099.) 2.1.2 Other Government documents. drawings. and uublications. The following other Government documents, drawings, and p
21、ublications.form a part of this document to the extent specified herein, Unless otherwise specified, the issues are those cited in the solicitation. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NAVAL SEA SYSTEMS COMMAND (NAVSEA) S8700-841569 -Ri
22、ng,: Steel, for Flush Mounted Plastic Case, Gauges S8700-1385799 -.Cases, Plastic.for Flush Mounted Pressure Gauges 810-1385917 - Thermometer Selection Guide. - and Thermometers. and Thermometers. (Application for copies should be addressed to: Commander, Portsmouth Naval Shipyard, Code 202.2, Ports
23、mouth, NH 03801.) NAVAL SEA SYSTEMS COMMAND (NAVSEA) 0900-LP-001-7000 - Piping Systems, Brazed, Fabrication and Inspection of. (Application for copies should be addressed to the Naval Publications and Forms Center, (ATTN: NPODS); 5801 Tabor Avenue, Philadelphia, PA 19120-5099.) DEPARTMENT OF LABOR (
24、OSHA) Code of Federal Regulations (CFR) 29, Part 1910.1200 - Occupational Safety and Health Standards. (The Code of Federal Regulations (CFR) and the Federal Register (FR) are for sale on a subscription basis by the Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.
25、When indicated, reprints of certain regulations may be obtained from the Federal agency responsible for issuance thereof. ) (Copies of drawings and publications required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed b
26、y the contracting activity.) 2.2 Non-Government oublications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Un
27、less. otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) B40.1 - Gauges - Pressure Indicating Dial Type - Elastic Element. (DoD adopted) (Application for copies should
28、 be addressed to the American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018.) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-LSbLlbA h6 m 7977706 OLlLBOOB 7 m - - - - - MIL-T-l9646A(SH) AMERICAN SOCIETY FOR TESTING AN
29、D MATERIALS (ASTM) A 216 - Standard Specification for Steel Castings, Suitable for Fusion Welding, for High Temperature Service. (DoD adopted) A 276 - Standard Specification for Stainless and Heat-Resisting Bars and Shapes. (DoD adopted) A 473 - Standard Specification for Stainless -and Heat-Resisti
30、ng Steel Forgings. (DoD adopted) A 480 - Standard Specification for General Requirements for Flat- Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip. (DoD adopted) Age-Hardening Stainless and Heat-Resisting Steel Bars and Shapes. A 581 - Standard Specification for Free-Machining Stai
31、nless and Heat-Resisting Steel Wire and Wire Rods. (DoD adopted) A 582 - Standard Specification for Free-Machining Stainless and Heat-Resisting Steel Bars, Hot-Rolled or Cold-Finished. (DoD adopted) B 26 - Standard Specification for Aluminum-Alloy Sand Castings. (DoD adopted) B 85 - Standard Specifi
32、cation for Aluminum-Alloy Die Castings. (DoD adopted) B 117 - Standard Method of Salt Spray (Fog) Testing. (DoD adopted) B 209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate. (DoD adopted) B 443 - Standard Specification for Nickel-Chromium-Molybdenum- Columbium Alloy (UNS N
33、06625) Plate, Sheet, and Strip. B 570 - Standard Specification for Copper-Beryllium Alloy Forgings and Extrusions. D 3951 - Standard Practice for Commercial Packaging. (DoD adopted) A 564 - Standard Specification for Hot-Rolled and Cold-Finished (Application for copies should be addressed to the Ame
34、rican Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informat
35、ional services.) 2.3 Order of precedence. 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 in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtai
36、ned. 3. REQUIREMENTS 3.1 First article. When specifled (see 6.2), a sample shall be subjected to - first article inspection (see 6.4) in accordance with 4.3. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-LSb4bA bb m SSSS90b 0438009 9 MIL-T-
37、l9646A(SH) 3.2 Materials. . Materiais “gor the parts which make up. the- gas actuated thermometer shall be as specified in 3.2.1 through 3.2.4, and in table I. TABLE I. Materials. Designation UNS S31600 Capillary UNS S31600 tubing Elastic element UNS S17400 UNS N0500 UNS N0625 UNS N09902 UNS C17200
38、Fill fluid Spiral armor Extension tubing Flange UNS S31600 UNS S31600 UNS S32100 UNS S31603 Sliding UNS S31600 connector assembly Case I I 300 or 400 series Movement 300 or 400 series See footnotes at end of table. 6 Material specification ASTM A 276 ASTM A 276 ASTM A 564 ASTM B 443 QQ-N-286 ASTM B
39、570 ASTM A 276 ASTM A 276 ASTM A 216 ASTM A 216 ASTM A 276 ASTM B 26 ASTM B :85 ASTM A 473 ASTM B 209 ASTM A 276 MIL-P-5425 ASTM A 276 Remarks CRES 316 L/, 2/ CRES 316 L/, 2/ CRES 17-4ph K - mone 1 Inconel 625 Ni Span C Beryllium Cu CRES 316 CRES 316 I/, 2/ CRES 321 CRES 347 CRES 316 Aluminum Alumin
40、um CRES fi/ Aluminum CRES Plastic W, W u, W u, 5/ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Part Indicating pointer Red index Threaded fasteners Washers Gaskets O-Rings MIL-T-l9646A(SH) TABLE I. Materials - Continued. I Material Designation spe
41、cification 300 or 400 series 300 or 400 series 300 or 400 series ASTM B 209 ASTM A 276 ASTM B 209 ASTM A 276 ASTM A 276 ASTM A 581 ASTM A 582 ASTM A 276 ASTM A 480 Flat gaskets 1 MIL-R-83248 O-Rings , type 1 MIL-R-83248 Remarks Aluminum z/ CRES z/ Aluminum u CRES 9J CRES 10/ CRES Fluorocarbon Rubber
42、 (250F Max) Fluorocarbon Rubber (250“ F Max) u For applications having temperatures greater than 800 degrees Fahrenheit (“F), CRES 321 (UNS 532100) or CRES 347 (UNS S31603) in accordance with ASTM A 216 shall be used. may be used in lieu of CRES 316. elements. conversion coatings in accordance with
43、MIL-C-5541 or by anodizing in accor- dance with type I or II of MIL-A-8625. Aluminum shall then be finished with a flash air-dry primer and a gray enamel finish coat. The finish coat shall be in accordance with type II of MIL-E-15090. 2J For welding applications, CRES 316L (UNS S31603) in accordance
44、 with ASTM A 276 3J The fill fluid shall be nitrogen or an inert gas as per the periodic table of 4J Aluminum shall be prepared for protection against corrosion by chromate 2/ Aluminum alloy shall be selected to meet shock requirements (see 3.6.14). however, this does not authorize submission of kno
45、wn defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: (a) First article inspection (see 4.3). (b) Quality conformance inspection (se
46、e 4.4). 15 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4:3 First article inspection. First article inspection shall be performed on the- gas actuated thermometer samples produced with equipment and procedures normally used in production, First ar
47、ticle inspection shall consist of the examination and tests specified in table VI (see 6.3). 4.3.1 SamDle size. Two gas actuated thermometers of each configuration shall be subject to first article-inspection. Each configuration shall include, but not be limited to, the same sensor, elastic element,
48、 and case. 4.3.2 Order of insDection. The sample gas actuated thermometers shall be subjected to the inspections specified in table VI in the order-listed. TABLE VI, Examination and tests. Examination or test General examination General examination Accuracy Accuracy - friction Accuracy verification
49、Repeatability Inclination Compensation Response time Thermal and mechanical stability Thermal cycling lJ Storage temperature L/ Requirement 3.5.1 3.5.1.1 3.5.1 3.5.2 3.5.3 3.5.4 3.5.5 3.5.6 3.5.7 3.5.8 Test method 4.7.1 4.7.2 4.8.1 4.8.1.2 4.8.1.3 4.8.2 4.8.3 4.8.4 4.8.5 4.8.6 4.8.7 4.8.8 First article inspection X X X X X Qual i ty conformance inspection X X .x 16 Provided by
