1、.I - . MIL-T-Zbb22A 66 m 999990b 0329338 3 m w- 1811E-T-16622A 10 JULY 1952 SUPERSEDING 1 DECEMBEH 1951 MIGT-l6622(5RIPS) IbfpLITARY SBECIFICAXION This spscfiaation wu8 approwd bu thu Dspcrrtmunb of tho Army, tha Naw, and . the Air Force for thu wa of p*oaurs?!wnt Freparation, Contents, and Approval
2、, MlL-A-16303- Audible $ignals, Inte- rior Communication and Small Craft (Bells, Buzzers, Horns, and Sirens) (Naval Shipboard Use), NAVY DEPARTMENT General Specifications for Inspection of Material. STANDARDS MILITARY MIL-STD- 105-Sampli ng Procetlu res and Tables for Inspection by Attri- butes. MIL
3、-STD-120-Marking of Shipments. DRAWINGS BUREAU OF SHIPS 9000-S6202-73440-Dead Front Fuse Holder with Blown Fuse Indicator, Type EII-1, (O-20-A, 125V., N.W.T.). 9000-S6202-73007-Switchbosrd Indi- cator Light (Two-Lamp). (Copies of specifications, standards, and drawings required by contractors in con
4、nection with specific procuremen functions should be obtained from the procuring agency or as directed by the contnctinlt officer. 1 2.2 Other puhlications. - The foowing publication, of the issue in effect on date of invitation for bids, unless otherwise stated, forms a part of this specificrrtion:
5、 CONSOLIDATED CLASSIFICATION COM MITTEE Consolidated Freight Classification Rules. (Application for copies should be addressed to the Consolidated Clsssificntion Committee, 202 Chicago Union Station, Chicago 6,111.) 3. REQUIREMENTS 3.1 Qualification, - Ttink lovcl intlic:utora furnished under this s
6、pecification shall tx! ;I product which has been tested and hiis passed the qualification tests specified in section 4 (see 6.2). 3.2 General features. - The equipment shall be in accordance with the following paragraphs of Specification MIL-1-983 in addition to the requirements specified herein. Li
7、censed by Information Handling Services, MIL-T-lbhZZA bb m 7777706 0327320 T m -I_. , c- _ In-*- MIGT-16622A Whenever a requirement of Specification MILI-983 conflicb with a requirement of this specification, the requirement of this specification shall govern. Materials, genernl Stressed or vital pe
8、rta Unstressed or non-vital parts = Wood Magnesium Aluminum Brass and bronze Iron and steel Protection ngninut cor- Locking devices Washers Interchangeability and and standardization Shock, vibration and in- clination (vital vibra- tion test required) Component dials and pointers Pninting . rosion (
9、salt spray test Designation and marking is required) Design for production Cnskets-for tank units Rounded corners nnd edgea only Interrial unit protection Component dial winaows nil bearings Plastics Drilled and tapped holes Inlnmmahle materials Welding . Toxic compounds Primary power circuits Lubri
10、cnnts and lubrica- Power supply tolerances tion (normnl supply-116 Elcctricnl parts-general volts GO cycles AC) Electron tubcs Personal protection Electron tube and/or Clearances (insulntion re- capacitor sockets sistance and dielectric Cnpaci tors strcnglli) Resistors Shielding and rndio fre- Poten
11、tiometers qucncy noise intcrfer- Trnnsformers Relnys Syiicliroe Fungus-inert matcriala Restriction of materials Elcctricnl tcipcs Enclosures-general Accessibility Degi-ce o cnclosare- dripproof Enclosure mounting- panel or bulkhead Stiffening grooves Through bolting Terminal tubes Cover bolts Ventil
12、ation Size (for submarines) Temperature nnd hunid- ity (special cold limit does apply) Threaded parts 3.3 Descriptions. encc Aiidiblc iioisc (nirborno Grounds Soldering Moiinting of parts Iritciml assembly connec- Terminal strips, connec- Wiring Dial illumination Lamps Batteries Drawings Instruction
13、 books haintennnco parts kit Repair pnrts Workmiinship and general inspection Gcncrn! informntion only) tion tors and terniinnls n 3.3.1 Sonic (tvpe IC/S).-This type makea use of one or more-sonic transducers located in a tank, The device operates by generating sonic vibrations and reflecting them f
14、rom the top of the liquid, in the case of a single homogeneous liquid, or from the boundary plane between liquids in the case of two immiscible liquids. 3.3.2 Zndztctive float (tupe ZC/I).-This type makes utje of a float riding on a vertical rod or column, mounted in a tank. The column contains a ta
15、pered winding, the number of turns per unit length varying throughout the length, The float rides on the liquid to be measured and cuts the magnetic Aux line produced by the electrically energized coils in the vertical rod or column. This varies tho amount of inductar.ce in one leg.of an alter- nati
16、ng current bridge. The rending of level is obtniried by proper calibration of n meter connected to the alternnting current (R.C.) bridge circuit. 3.3.3 Cqwcitniice (type IC/Ci),.- This type makes use of a capacitance type unit mounted in a tank Containing a petroleum base liquid only and utilizes th
17、e principle that the cnpncitance of a condenser is pro- portional to the dielectric constant. The cir- cuitry of this typo is aiich thi being mcnsurcd servea as the. cl tween the plates of the tank unit and pro- vides the vnrintion in capacitrince in terms of varirition in liquid level. The tank uni
18、t shall be mounted either vertically or inclined away from the vertical by nn amount that will not be deleterious to the satisfactory perforniance of the equipment, 3.3.4 Cap(icimce (tgpe XC/C2), - This type makes use of R cnptxitance type unit mounted in a tank containing two immiscible liquids one
19、 of which is a conducting medium usually water and the other a pctrolcum base liquid, and utilizes the principle that the capncitnnce of 8 condenser fe proportional to the aren of the plates. The circuitry of this type is such that the trink unit forms one plate of the condenser and the liquid forms
20、 the other plate. The part of the tank unit ex- posed to the liquid is sheathed with a dielec- 3 -, . ;*o i Licensed by Information Handling ServicesMIL-T-3bb22A bb MIL-T-16622A trie material which serves as the dielectric between the unit and the conducting liquid. The varying height of the conduct
21、ing liquid provides the variation of plate size in terms of variation in liquid level. 3.3.5 Radioactive fiout (type IC/R).-This type makes use of a float containing a gamma ray source such as commercially available radium salt, the float riding on or in a vertical rod or column mounted in the tank
22、and with a gamma ray detector located at the top of the vertical rod or column to indicate the amount of the liquid to be measured. The float riding on the liquid will emit gamma rays which wil be picked up by the detector. This type of gage utilizes the principle that the intensity of gamma rays va
23、ries in inverse proportion to the square of the distance be- tween the float and the detector. 3.3.6 Lever niid flout tgpe (IC/FE).-This type makes uswof a float attached to a lever which in turn is attached to the edge of the tank. The lever actuates a mechanism, such ris a potentiometer, mounted i
24、n a liquicltight case within the tark and by proper circuitry to indicate at a remote station, the amount of liquid to be measured present in the tank. 3.3.7 Lever atid flout (type IC/FT),-This type shall consist of a fioat attached to a lever which in turn is attached to the top of the tank. The le
25、ver actuates a mechanism, such as a potentiometer, mounted in a liquid- tight case within the tank and by proper circuitry to indicate at a remote station, the amount of liquid to be measured present in the tank. 3.4 Component units.-The components of a tank level indicating system shall consist ees
26、entially of the following: (a) One or more tank units per tank (the number of tanks per vessel will be specified in the contract or order) as determined by the shape of the tanks to assure ac- curate indication. 1. 9999906 0329323 1 W (b) One indicator per tank locatedin a remote control station. Ac
27、tive consitleration will be given to the use of one indicator and a selector switch or scanning switch in the case of multiple banks of tanks. In the latter case, means shall be provided to monitor the dr;iw-off tank of a bank at all times (see 3.4.2). (c) One set control equipment including power p
28、nck-loc;itc?d ncnr tho re- mote control station. 3.41 Tank units and connections to tank units are required to be explosionproof, 3.4.2 S(rfc opontiorr.-All tank level indi- cating equipment shall be tlesignetl to operitte safely and with no possibility of cwsing ;in explosion or fire when used in ;
29、in explosive vapor atmosphere. The equipment will be suhjectetl to exhaustive tests to show that no reasontible combination of possible casu- alties to the tank units or power supply to thcm will cause an explosive h;ix:ii.tl within a tank. Limits for equipment and circuits in an explosive vapor atm
30、osphere shall not exceed 0.006 joules per cycle corresponding to an actual spark energy of 0.00024 joules per spark, 3.4.3 Acciiiw.v,-All tank lcvcl intlicikitig equipment shall be designed to indicate within three percent of the iictual arnount of liquid being measured when tested in tic- cordance
31、with 4.3.2. 3.5 Use.-All tank level int1ic;rtin quip; ment shall be designed to indicate the iimciunt of the following general types of liquids pres- ent in the tanks of a vessel. (a) Gasoline-high test aviation. (L) Jet propulsion fuels. (c) Diesel fuel, (d) Fuel oil. (e) Water-fresh distilled, (f)
32、 Salt water. Licensed by Information Handling ServicesMIL-T-lbb22A 66 7777906 0327322 3 W hlIGT-16622A The contract or order will specify which liquid is to be gaged and whether it ia com- bined with or without an immiscible liquid. shall be in accordance with General Specifi- cations for Inspection
33、 of Material. 3.6 Detail features. 4.2 General.-The sampiing procedii res for the various tests to be performed on the equipment shall be as follow: (The atten- tion of the man,iiacturer invited to the I-983 for information tests such as cost, where condiicted, failures, test 3.6.1 Circuit desigi.-T
34、he circuit shall not in view of the basic principles involved in the types IC/ and “/, the bridge simplicity, ruggedness and ease of operation be restricted to any type* However, applicable paragraphs of Specificst ion MIL . circuit is indicated. However, for all types, etc.) - shall be of prime imp
35、ortance. In the event the use of synchros is indicated, they shall be in accordance with Specification MILI- 983. The circuit shall provide for one or more tiink units per tank, the number to be deter- mined by the shape of the tanks to Fe gaged. One indicator per tank shall be provided. However, in
36、 the case of several banks of tanks piped together to one draw off tank, consideration may be given to one indicator and a selector switch or scanning system. 3.6.2 I,dicato?*s. - Meter type indicators shall be clesigned in accordance with Specifi- cation MiGI-983, and the dials shall not exceed 4-i
37、nches diameter. Lamp type indi- cators shall be in accordance with Drawing 9000-SG202-73907. 3.6.3 Irrdicrrtor itid shall inclirde in the lot presented for Govcrnmciit inspec- tion only those equiprnents thnt have Imwd these tests. 4.2.3.1.2 Sntiplitfl for gwtp ri tcst s,-A sample of equipment shiil
38、l be sclcitetl from each inspection lot by the Govciwmcnt in- spector in ;iccortlnnce with tablc I, and sub- jected to each of the group A tests listcvi in 4.2.3, with lot acceptance biiscd on the sim- pling requirements of Stiiiitlnid M1GSTD.- 105. . 4.2.3.1.3 Sutrtplqt for ftroiip 1; icsts.-A nmpl
39、c of eqiiipments shsll he ficlectcd from cach inspection lot by the Government in- spector in accordance with taule II, and be suhjeeted to each of the group B tests listed in 4.2.3 with lot acceptance bascd oi Sam- pling requirements of Stand:ircl MIL-STD- 105. 4.2.3.1.4 Siilplig f. g*iiU/ C tcst.9
40、.- Group C tests will be rcquircd by the bureau or agency concerned when the basic design of the equipment shall be selected by the Government inspector and subjected to ench of the group C tests listed in 4.2.3, with accpetance based on 4.2.3.1.6. Licensed by Information Handling Services*- MIL-T-1
41、6622A TABLE IL-Sampling for group i tests I Numbor of Number of equipments in equipments inspection lot in sample 2 and under, All 4 to 16, 3 16 to 40 _,_, .6 41 to 110,-, 7 111 to 300, 10 301 to 600-, 16 601 and over, 26 Number of equipments nonconforming on piny group B test Acceptance Rejection n
42、umber number O 1 O 1 O 1 O 1 1 2 2 3 4.2.3.1.5 Acceptunce, oroulis A und B tests. -The results of each test shall be compared with specification requirements. Failure to conform to the specification reo;-iiremcnts for any test shall be counted as a defect, and the equipment shall be rejected. If the
43、 number of nonconforrning equipments in any sample exceeds the acceptance number for that sample, the lot represented by the sample shall be rejected. Rejected lots may be offered again for Government inspection tests provided all equipments in the lot have been retested by the contractor for the te
44、st (9) -causing rejection and ali noncompli- ance corrccted. 4.2.3.1.6 Acmptance, yroup C tests.-The results of each test shall be compared with specification requirements. In the event of failure to conform to this specification for any group C test, the contractor shall correct the cause of failur
45、e on future production units and repair the deficiency in all equip- ments produced on the contraik nor open when the box is tested in nccordnnce sith the applicable container specification. The gross weight of wood boxes sheill not exceed 150 pounds unless the weight of the individual item ex- ccec
46、la this rimotint, The gross weight of fibcr- bocird boxes stitill not cxceed the weight limi- tritions of the iipplicnble box specificlition. LLL-B-631, LLL-B-636, MIL-C-G057, 5.1.2.2.2 Stock or OUCSC ship)ierrt. - Equipment rind/or riccessories destiiied for domestic shipment to stock or for overse
47、a shipment sheill be ptickecl in wood cleated plywood, niiiled wood, or fiberboiirtl boxes or nailed wood crates conforming to style A or B of Specification JAN-P-105, JAN-P-106, symbol Y3c or VSs of Specificiition JAN-P- 108, or Specificfition JAN-P-104, respect- ively. Plywood shall conform to typ
48、e A or B, condition I of Specic;itiori JAN-P-130. Boxes shall bc lined with a sealed waterproof c;isc liner mcidc of m:iteriiil conforming to Specificntioii JAN-1-126. Linern shdl be seciled with an iidhesivc conforming to Speci- Cictition MIL-A-140, Sems and closure ahull hrive strenLh and wuter re
49、sistance equal to that of the body material, or shall have a continuous seam nt least three-quarters of an inch wide. Shipping coiitriiners shall be closcti rind strapped in uccmiange with the ctpplicable conttiiner spccification. Flirt steel fjtriippiiig shdl conform to cluss A or I3 of Specificution QQ-S-781. The gross weight of wood boxes Bhnll not cxcced 150 pounds iiiiless tho wigtit of the unit item excccts 8 Licensed by Information Handling Services.- MIL-T-Lbb22A bb W i! 3 interior si
