1、L/SH) INCH-POUND 9 Auqust 1994 SUPERSEDING MIL-L-23886B(SH) 14 April 1989 (See 6.9) MILITARY SPECIFICATION LIQUID LEVEL INDICATING EQUIPMENT (ELECTRICAL) This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and A
2、gencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for electrical liquid level indicating equipment for Naval shipboard use in fresh water, feed water, potable water, seawater, waste water, diesel fuel, lubricating oil, contaminated oil, refrigerants
3、, JP fuels and various other fluids in low pressure and high pressure tanks. 1.2 Classification. The types of liquid level indicating equipment shall be designated in the following form, as specified (see 6.2): IC/CO MF SW/AR LP A 005/245/250 Basic type Sensing Application Pressure Display Indicatio
4、n (see 1.2.1) .(see 1.2.2) (see 1.2.3) (see 1.2.4) (see 1.2.5) (see 1.2.6) 1.2.1 Basic type. The basic type for Naval interior communication technique range range continuous output liquid level indicating equipment shall be designated by Il IC/COl. 1.2.2 Sensinq technique. The sensing technique shal
5、l be designated as fol lows: AZ - Admittance/impedance TD - Time domain reflectometry MF - Magnetic float CA - Capacitive DP - Differential pressure RT - Resistance tape-type Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this docu
6、ment should be addressed to: Commander, SEA 03R42, Naval Sea Systems Command, 2531 Jefferson Davis Hwy, Arlington VA 22242-5160 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 668( DISTRIBUTION
7、STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.2.3 Application. The fluid to be measured shall be designated as follows. The first two-letter designation identifies the fluid to
8、be measured in the tank. The second two-letter designation identifies the liquid or gas which interfaces with the measured fluid. Fluid Liquid or gas CF - Contaminated fuel CO - Contaminated oil F0 - Fuel (diesel fuel, cargo fue 1 , gaso 1 i ne) FW - Fresh water, potable water, feed water HO - Hydra
9、ulic oil JP - JP-5, JP fuels LO - Lubricating oil RF - Refrigerants SO - Synthetic oil SW - Seawater TO - Turbine oil WO - Waste oil WW - Waste water, sanitary waste AR - Air CA - Compressed air CG - Compressed qas ST - Steam SW - Seawater WW - Waste water l. 2.4 Pressure ranqe. The pressure range u
10、nder wl shall operate shall be designated as follows: AP - Vacuum pressure of 29.5 inches mercury (749 mi 20 pounds per square inch gauge (psig) (138 ki inclusive. VP - Vacuum pressure of 29.5 inches mercury (749 mi 100 psiq (689 kPa) inclusive. 1 1 1 ch the sensing device 1 imeters mercury) to opas
11、cal s (kPa) 1 imeters mercury) to LP - From O psig (O kPa) to 100 psig (689 kPa) inclusive. HP - From 101 psig (696 kPa) to maximum pressure as specified (see 6.2). 1.2.5 Displa_y. The display shall be designated as follows: I- A - Analog D - Digital C - Analog and digital 1.2.6 Indication ranqe. Th
12、e indication range shall be designated by three numbers, separated by a I/“. Each number shall represent a height in inches above the bottom of the tank. The first number shall indicate where 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-23
13、886C( SH) liquid level indication shall begin. The second number shall indicate where liquid level indication shall end. The third number shall indicate the total height of the tank. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following specifications an
14、d standards form a part of this document to the extent specified herein. Unless issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). 4 otherwise specified, the issues of these documents are those listed in the
15、“ SPECIFICATIONS FEDERAL P-D-680 - Dry Cleaning and Degreasing Solvent. MILITARY MIL-C-17/127 - MIL-S-901 - MIL-C-915 - MIL-C-915/8 - MIL-R-6855 - MIL-F-15160 - MIL-F-15160/3 - MIL-A-15303 - MIL-S-16032 - MIL-M-16034 - MIL-E-17555 - MIL-F-19207 - MIL-F-19207/1 - Cables, Radio Frequency, Flexible, Co
16、axial, 50 Ohms, M17/127-RG393. Shock Tests, H. I. (High-Impact); Shipboard Machinery, Equipment and Systems, Requirements for. General Specification for. Cable and Cord, Electrical, for Shipboard Use, Cable, Power, Electrical, 600 Volts, For Outdoor Use Only (Not for Indoor Use) Types DSS, TSS, FSS
17、and 7SS. Rubber, Synthetic, Sheets, Strips, Molded or Extruded Shapes, General Specification for. Fuses: Instrument, Power, and Telephone. Fuses; Instrument, Power, and Telephone (Nonindicating) , Style F03. Audible Signals: Alarms, Bells, Buzzers, Horns, and Sirens, Electronic, Shipboard. Switches
18、and Detectors, Shipboard Alarm Systems. Meters, Electrical-Indicating (Switchboard and Portable Types). Electronic and Electrical Equipment, Accessories, and Provisioned Items (Repair Parts): Packaging of. Fuseholders, Extractor Post Type, Blown Fuse Indicating and Nonindicating General Specificatio
19、n for. Fuseholders, Extractor Post Type, Blown Fuse Indicating, Type FHLlOU and FHLlOG. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-24231 MIL-S-24235 MIL-M-24359 MIL-P-24423 MIL-C-24712 MIL-M-38510 MIL-1-46058 MIL-P-55110 STANDARDS MILITA
20、RY MIL-STD-108 MIL-STD-167-1 MIL-STD-454 MIL-STD-461 MIL-STD-462 DOD-STD-1399, Section 070 Section 300 MIL-STD-1399, - MIL-STD-2036 - Connectors, Plugs, Receptacles, Adapters, Hull Inserts, and Hull Insert Plugs, Pressure-Proof, General Specification for. Stuffing Tubes, Metal, and Packing Assemblie
21、s for Electric Cables, General Specification for. Meters, Milliammeters, Direct Current Panel Mounting (Edgewise Types). Propulsion and Auxiliary Control Consoles and Associated Control and Instrumentation Equipment, Naval Shipboard Use, Basic Design Requirements. Coatings, Powdered Epoxy. (Metric)
22、Microcircuits, General Specification for. Insulating Compound, Electrical (For Coating Printed Circuit Assemblies). Printed-Wiring Board General Specification for. Definitions of and Basic Requirements for Enclosures for Electric and Electronic Equipment. Mechanical Vibrations of Shipboard Equipment
23、 (Type I - Environmental and Type II - Internally Excited) . Standard General Requirements for Electronic Equipment. Requirements for the Control of Electromagnetic Interference Emission and Susceptibility. Electromagnetic Interference Characteristics, Measurement of. Interface Standard for Shipboar
24、d systems, D.C. Magnetic Field Environment. (Metric) Interface Standard for Shipboard Systems, Electric Power, Alternating Current. (Metric) General Requirements for Electrical Equipment. (Unless otherwise indicated, copies of federal and military specifications and standards are available from the
25、Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.1.2 Other Government drawinq and publications. The following other Government drawing and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issue
26、s are those cited in the solicitation. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DRAW I NG NAVAL SEA SYSTEMS COMMAND (NAVSEA) NAVSEA 803-2145532 - Indicator/Indicating System Liquid Level Applications/Selection Guide. (Application for copies
27、of NAVSEA drawing should be addressed to: Commander, Portsmouth Naval Shipyard, Naval Engineering Drawing Support Activity, Code 280.6, Portsmouth, NH 03804-5000.) PUBLICATION NAVSEA S9086-VD-STM-OOO/CH-631 - Preservation of Ships In Service, Surface Preparation and Painting. (Application for copies
28、 should be addressed to: Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 NonGovernment publications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents whi
29、ch are DOD adopted are those listed in 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). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) B 117 - Standa
30、rd Test Method of Salt Spray (Fog) Testing (DOD adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references c
31、ited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article testing (see
32、 6.5) in accordance with 4.4. 3.2 General requirements. Liquid level indicating equipment shall be in accordance with the electrical and mechanical design and construction requirements of MIL-STD-2036 and as specified herein. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
33、hout license from IHS-,-,-MIL-L-2388bC m 99999Ob 1981242 Tb1 MIL-L-23886C( SH) 3.2.1 Materials and processes. The selection, usage and methods of implementation shall be in accordance with MIL-STD-2036. Materials shall not be adversely affected by the ambient environments specified in the constructi
34、on and performance requirements of this specification. Nonmetals shall be flame resistant and shall not support fungus growth as specified in MIL-STD-454. 3.2.1.1 Recovered materials. Unless otherwise specified herein, all equipment, material, and articles incorporated in the products covered by thi
35、s specification shall be new and may be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered materials“ means materials which have been collected or recovered from solid waste and reprocessed to beco
36、me a source of raw materials, as opposed to virgin raw materials. None of the above shall be . interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specified. 3.2.2 Parts. Part selection and usage shall be in accordance with M
37、IL-STD-2036, except that an elapsed time indicator is not required. 3.2.2.1 Printed wirinq boards. Printed wiring boards shall be in accordance with MIL-P-55110 and MIL-P-24423. Printed circuits shall be MIL-1-46058, type UR. . conformally coated. The insulating compound shall be in accordance with
38、3.2.2.2 Liquid level switches. Liquid level switches shall be in accordance with MIL-S-16032. 3.2.2.3 Solid-state electronics. Only solid-state electronics shall be used. 3.2.2.4 Fuses . Fuses shall be style F03 in accordance with MIL-F-15160 and MIL-F-15160/3. Glass tube fuses shall not be used. 3.
39、2.2.5 Fuseholders. Fuseholders shall be type FHLlOU in accordance with MIL-F-19207 and MIL-F-19207/1. 3.2.3 Microprocessors. Microprocessors and microprocessor support circuitry may be incorporated in the equipment to perform processing and control functions. These functions may be: sensor and tank
40、selection and monitoring, sensor signal processing, power failure monitoring, alarm monitoring and control, liquid level height conversion to liquid level volume using look-up tables in programmable read only memory (PROM), receiver selection, and so forth. When used, microprocessors shall be in acc
41、ordance with MIL-M-38510, class B and built-in test (BIT) shall be provided in the form of firware, residing in the PROM. To assist troubleshooting, BIT shall indicate basic failure modes of the equipment such as power supply parameters out of tolerance. 6 Provided by IHSNot for ResaleNo reproductio
42、n or networking permitted without license from IHS-,-,-3.2.4 Testability. Testability shall be in accordance with MIL-STD-2036. No mechanical or electrical disassembly shall be required for the purpose of obtaining access to test points or adjustments, except for removal of a cover plate. 3.2.5 Safe
43、ty. Liquid level indicating equipment shall be in accordance with the safety requirements of MIL-STD-2036. For JP, CF, CO, WO and F0 applications, the portions of the liquid level indicating equipment inside the tank shall be in accordance with the hazardous atmosphere requirements of MIL-STD-2036.
44、3.2.6 Input connectors and color code. Electrical power input connector pin assignments and color code shall be in accordance with MIL-STD-2036. 3.2.7 Thermal desiqn and construction. Thermal design and construction . shall be in accordance with MIL-STD-2036. 3.2.8 Size and weiqht. Unless otherwise
45、specified (see 6.2), the maximum height of any individual component shall be 120 inches. Overall shape and dimensions shall meet requirements for surface ship and submarine installations in accordance with MIL-STD-2036. Unless otherwise specified (see 6.2), the maximum weight of any individual compo
46、nent shall be 35 pounds. 3.2.9 Interchanqeability. In no case shall parts be physically interchangeable or reversible unless such parts are also interchangeable or reversible with regard to function, performance and strength. 3.3 Description. Each liquid level indicating equipment shall consist of t
47、he following components: (a) One or more sensing devices. (b) Flexible interconnections, if needed. (c) Primary indicator panel assembly. (d) Auxiliary indicator panel assembly, when required (see 6.2). (e) Portable indicator assembly, when required (see 6.2). Selection and installation of liquid le
48、vel indicating equipment for Naval shipboard applications shall be in accordance with Drawing 803-2145532. 3.4 Construction. 3.4.1 Sensinq device. Sensing device material shall be capable of withstanding exposure to shipboard humidity and salt environment, the corrosive and pressure effects of the m
49、edium whose level is being measured and the mechanical stresses of shipboard shock and vibration. Sensing device material shall not corrode nor deteriorate in the intended environment. Sensing devices installed in seawater shall be fabricated from Inconel 625, Monel, or 316 stainless steel and then powder epoxy coated. For other 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-2388bC m 9999
