1、MIL-P-242LZC bb m 99999Ob 0479537 9 INCH - POUND MIL-P-24212C(SH) 24 Mav 1991 SUPERSEDING 22 October 1976 (See 6.11) MIL-P-24212B(SH) MILITARY SPECIFICATION PRESSURE TRANSDUCER EQUIPMENT (ELECTRICAL) This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and
2、 is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers electrical output pressure transducer equipment for Naval ships but does not include the readout or display equipment. 1.2 Classification. 1.2.1 Type designation. The typ
3、e designation shall be in the following form and as specified (see 6.2). O iGT S,T 170 f . 4 Power Type Application Range Reference supply (See 1.2.1.1) (See 1.2.1.2) (See 1.2.1.3) (See 1.2.1.4) (See 1.2.1.5) 1.2.1.1 Type. Transducers shall be designated by the three-letter symbols as follows : PGT
4、- Pressure, gauge, transducer PVT - Pressure, vacuum, transducer PCT - Pressure, compound (gauge, vacuum) transducer PWT - Pressure water column, transducer Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be add
5、ressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or bv letter. AMSC N/A FSC 6685 DISTRIBUTION STATEMENT A. Approv
6、ed for public release; distribution is unlimited. . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24212C bb 9999906 0479538 0 MIL-P-24212C(SH) 1.2.1.2 Application. Fluid pressure to be measured shall be indicated as follows : GP - Steam, oil,
7、 fresh water, condensate, and other gases SW - Seawater FG - Flue gas and ammonia OX - Oxygen 1.2.1.3 Range. Full scale gauge pressure range in pounds per square inch (lb/in2) inches of mercury (in Hg) vacuum or inches of water column (WC) shall be designated by its numerical value (see 3.4.3). 1.2.
8、1.4 Reference. Reference pressure shall be one of the following: G - Atmospheric (gauge) A - Vacuum (absolute) S - Sealed reference at 14.7 pounds per square inch absolute (lb/in2 absolute). 1.2.1.5 Power supply. Wiring of the power supply shall be one of the following (see 3.4.5): 2 - Two-wire syst
9、em (direct current (dc) supply) 4 - Four-wire system (alternating current (ac) supply) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications. standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein.
10、 Unless otherwise specified, the issues of these 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 r BUBKAL PPP-F-320 - Fiberboard, Corrugated and Solid, Shee
11、t Stock (Container Grade), and Cut Shapes. MILITARY MIL-S-901 - Shock Tests, H.I. (High Impact); Shipboard Machinery, Equipment and Systems, Requirements for. MIL-E-917 - Electric Power Equipment, Basic Requirements for (Naval Shipboard Use). MS3102 - Connectors, Electric, Receptacles, Box Mounting.
12、 MS3106 - Connector, Plug, Electric, Straight, Solder Contacts, AN Type. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24212C 66 999990b 0479537 2 MIL-P-24212C(SH) MILITARY (Continued) MIL-C-5015 - Connectors, Electrical, Circular Threaded,
13、 AN Type, MS16142 - Boss, Gasket Seal Straight Thread Tube Fittings, MIL-E-17555 - Electronic and Electrical Equipment, Accessories, and Provisioned Items (Repair Parts): Packaging of. General Specification for. Standard Dimensions for, MIL-L-19140 - Lumber and Plywood, Fire Retardant Treated, MIL-S
14、-19500 - Semiconductor Devices; General Specification for. MIL-P-24423 - Propulsion and Auxiliary Control Consoles and Associated Control and Instrumentation Equipment, Naval Shipboard Use, Basic Design Requirements. MIL-“38510 - Microcircuits, General Specification for, MIL-P-55110 - Printed Wiring
15、 Boards, General Specification for. STANDARDS MILITARY MIL-STD-108 - Definitions of and Basic Requirements for Enclosures MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment for Electric and Electronic Equipment. (Type I - Environmental and Type II - Internally Excited). MIL-STD-202 - Test
16、Methods for Electronic and Electrical Component MIL-STD-275 - Printed Wiring for Electronic Equipment. MIL-STD-278 - Welding and Casting Standard, MIL-STD-454 - Standard General Requirements for Electronic MIL-STD-461 - Electromagnetic Emission and Susceptibility Require- Parts, Equipment. ments for
17、 the Control of Electromagnetic Interfer- ence. Measurement of. MIL-STD-462 - Electromagnetic Interference Characteristics, MIL-STD-701 - Lists of Standard Semiconductor Devices. (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from t
18、he Standardization Document Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1,2 Other Government documents, drawings. and Dublications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein, Unless o
19、therwise specified, the issues are those cited in the solicitation. 3 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24212C(SH) DRAWINGS MILITARY NAVSHIPS 810-1385846 - Oxygen System, Submarine, Replenishment. (Application for copies should
20、be addressed to Commander, Portsmouth Naval Shipyard, Naval Engineering Drawing Support Activity, Code 202.2, Portsmouth, NH 03801. ) PUBLICATION NAVS EA NAVSHIPS 0900-LP-001-7000 - Fabrication and Inspection of Brazed Piping Systems, (Application for copies should be addressed to the Standardizatio
21、n Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The following document forms 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
22、the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). INSTRUMENT SOCIETY OF AMERICA (ISA) Recommended Practice 37.1 - Nomenclature and Specification Terminol
23、ogy for Aerospace Test Transducers With Electrical output. (Application for copies should be addressed to the Instrument Society of America, P.O. Box 12277, Research Triangle Park, NC 27709.) (Non-Government standards and other publications are normally available from the organizations that prepare
24、or distribute the documents. These documents also may be available in or through libraries or other informational services.) 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 associated detail specifications, spe
25、cification sheets or MS standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
26、-,-,-MIL-P-24212C bb R 99999Ob 0479541 O O MIL-P-24212C(SH) 3, REQUIREMENTS 3.1 Qualification. Pressure transducers furnished under this specification shall be products which are authorized by the qualifying activity for listing on the applicable qualified products list at the time of award of contr
27、act (see 4.3 and 6,4). 3.2 Nomenclature. Nomenclature shall be consistent with the Instrument Society of America Recommended Practice 37.1. 3.3 Description. Transducer equipment shall be designed to convert a fluid pressure to a continuous linear proportional analog electrical dc signal. The pressur
28、e transducer shall consist of the following units: (a) Detector to sense the fluid pressure. (b) Power supply to provide excitation energy to the detector and (c) Signal conditioner to convert the detector output to a continuous signal conditioner. linear proportional analog electrical signal. 3.3.1
29、 Transducer may be supplied as separate units or may be packaged in any combination. 3.4 General requirements. Transducer equipment shall be in accordance with the requirements of MIL-P-24423 and as specified herein. 3.4.1 Materials. Transducer materials shall be in accordance with the prohibited an
30、d galvanic corrosion material requirements of MIL-E-917 and MIL-P- 24423, and shall conform to requirement 4 of MIL-STD-454 for fungus inertness. 3.4.2 Sensing elements, The material for the force summing devices and wetted parts shall be in accordance with table I. 5 Provided by IHSNot for ResaleNo
31、 reproduction or networking permitted without license from IHS-,-,-MIL-P-24212C 66 9999906 0479542 2 W MIL-P-24212C(SH) TABLE I. Material. T 5 Service fluid t Seawater Steam, oil, freshwater, condensate and other gases Oxygen Sensing element and wetted parts Flue gas and ammonia X X CRES 304L 316L a
32、nd 321 CRES 17-4 PH 17-7 PH 15-5 PH Monel and K-Monel Inconel 600 and X750 Inconel 625 and 718 Hastelloy C276 Titanium CP and 6A1-4V CuNi 70/30 Ni Span X X X X X X X X X X “- “- “- X X X X X “- “- “- X X X Tantalum 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
33、e from IHS-,-,- MIL-P-24212C 66 W 9999906 0479543 4 3.4.3 RanPes. Transducer pressure ranges shall be in accordance with table II, as specified (see 6.2). TABLE II. Ranges. Type PGT Pressure ranges ( lb/in2) 0-5 O - 15 O - 30 O - 50 O - 60 o - 75 o - 100 O - 150 o - 200 O - 300 O - 500 O - 600 o - 1
34、000 O - 1500 O - 3000 O - 5000 O - 6000 o - 10,000 Type PCT Compound ranges O - 30 O - 30 O - 30 O - 30 Pressure ( lb/in2) O - 15 O - 30 o - 100 O - 150 Type PVT Vacuum ranges (in Hg) O - 30 Type PWT Pressure water column ranges (inches of water column) o - 10 O - 60 O - 150 O - 300 3.4.4 Output. Th
35、e electrical signal output of the transducer shall be dc directly proportional to pressure input. The output shall be a true current source of 4 to 20 milliamperes (mA), dc. The static error band requirement shall be met (see 3.7.1), regardless of external load resistance variations over a range of
36、O to 250 ohms, The 4 mA output shall correspond to the lower pressure range value and the 20 mA output shall correspond to the upper pressure range value for the transducer pressure ranges specified in table II. 3.4.5 Power supply Transducers shall operate in either a two-wire or a four-wire configu
37、ration, but not both. The two-wire configuration shall use a 28 volt dc supply. The four-wire configuration shall use a 115 volt ac supply (see 3.5.8). 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24212C(SH) 3.5 Transducer desinn reauireme
38、nts. Transducers shall have an expected life of 40,000 hours of operation when installed and subjected to the following conditions encountered in Naval service: (a) High shock (see 4.8.18). (b) Vibration (see 4.8.17). (c) Temperature (see 4.8.10) . (d) Humidity (see 4.8.11). (e) Supply voltage and f
39、requency variations (see 4.8.7 and 4.8.9). (f) Inclination (see 4.8.6) (g) Pressure variations in the fluids over the range specified (see 4.8.15). 3.5.1 Calibration monitor. A means shall be provided at the signal conditioner to monitor transducer electrical output corresponding to pressure input,
40、to permit in-place calibration. The monitor signal shall be of an accuracy sufficient to determine the static error band (see 3.7.1 and 6.5) and repeatability (see 3.7.2). The monitoring means may be in the form of test jacks. Monitoring shall be effected without the necessity of electrical disconne
41、ction. 3.5.2 Adiustments. - Tamper-proof adjustments for zero and span shall be provided for calibration purposes. The number of adjustments shall be kept to a minimum consistent with the operation and maintenance requirements and the elimination of need for selective matching of parts. 3.5.3 Degree
42、 of enclosure. Transducers shall be splashproof as specified in MIL-STD-108. There shall be no evidence of water leakage into the equipment enclosure (see 4.8.13). 3.5.4 Transducer mountinq. The transducer shall have four mounting bolt holes, each 0.375 inch plus or minus 0.005 inch in diameter, The
43、 centers of the mounting bolt holes shall form a rectangular pattern with sides of 3.125 inches plus or minus 0,010 inch (lateral) and 5.375 inches plus or minus 0.010 inch (longitudinal). The thickness of that portion of the mounting base through which the mounting bolts pass shall not exceed 0.50
44、inch. 3.5.5 External confimration. - The transducers external configuration shall conform to the following: (a) The transducers electrical connector (see 3.5.14) and pressure connection (see 3.5.7) shall be on opposite (longitudinal) ends of the transducer, shall face in opposite directions, and the
45、ir centers shall be within plus or minus 0.5 inch of the longitudinal centerline of the rectangular pattern formed by the four mounting bolt holes. (see 3.5.7), the end of the pressure connection shall not be less than 3.0 inches nor more than 5.5 inches from the geometric center of the pattern form
46、ed by the four mounting-bolt holes. (b) Exclusive of the pressure connection for submarine oxygen service 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24212C 66 E q9799Ob 0479545 B (c) The end of the electrical connector shall not be less
47、than 3.0 inches nor more than 5.5 inches from the geometric center of the pattern formed by the mounting-bolt holes. than 1.5 inches nor more than 3.75 inchs from the underside of the mounting base. less than O. 75 inch nor more than 3 .O inches from the underside of the mounting base. (d) The cente
48、r of the opening of the pressure port shall not be less (e) The center of the face of the electrical connector shall not be (f) The total height of the transducer shall not exceed 6.5 inches, (g) The total width of the transducer shall not exceed 4.20 inches and neither side shall extend more than 2
49、.10 inches from the geometric center of the pattern formed by the four mounting-bolt holes, (h) Exclusive of the pressure connection for submarine oxygen service (see 3.5,7), the total length of the transducer, including pressure connection and electrical connector, shall not exceed 9.0 inches. adjustment, and calibration test points shall be accessible when transducers are installed side-by-side with lateral separations 0.25
