1、 TIA-455-23-A (Revision of EIA/TIA-455-23)August 1985 (r 01/2012) FOTP-23 Air Leakage Testing of Fiber Optic Component Seals NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilit
2、ating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Standards and Publications shall not in any respect preclude any member or non-member of TIA from manufa
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5、 its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal 3-3664, formulated under the cognizance
6、 of the TIA TR-42 Telecommunications Cabling Systems, TR-42.13 Subcommittee on Passive Optical Devices andFiber Optic Metrology.) . Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current
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22、ENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. EU-455-2x45 14 February 1986 ACCEPTANCE NOTICE This noni;Ovemment document was adopted on indicated industry group has furnished the clearance required by existing regulations. document are mtocked by DoD Single Stock Point, Naval Publicat
23、ions and Forms Center, Philadelphia, PA, 19120, for iiue to DaD activities only. from the Electronic Industries Association, 2001 Eye Street, N.U., Washington, DC, 20006. 14 February 1986 , and is approved for use by DoD. The Copieo of the Contractors and industry groups rust obtain copies directly
24、Title of Docueat: Mr Leakage of Fiber Optic Component Seal Document Nmer: ANSI/EIA-455-2% D.te of Specific Issue Adopted: Relearing Industry Group: 7 Augwt 1985 Electrodc Industries Association - - . Superiedei: A!?SI/EU BS-455-2-1980, FOTP 23, May 1980 Acceptance of this FOTP does not imply that re
25、ferenced FTPs have been accepted. NOTICE: proposed, the industry group responsible for this standard shall inform the military coordinating activity of the proposed change and request participation. When reaffirmation, amendment, revision, or cancellation of this utandard is initially Cuit od ians :
26、 Amy - CR Navy - AS Mr Force - 85 - Review Activities: Amy - TE Navy - EC, SH, HC (Ur Force - 11, 17, 19, 80, 90, 99 DU - ES GSA - FSS . OUSD - SD User Activtiea: Nauy - Mr Force - 13, 14 t Military Coordination Activity: Army - CR Agent: DU-ES - - -3*.-ritp;- - (Project No. 6OCP-Ol51-19) 1 - .r. -
27、_L.- _ -_ - L_ MISC NIA DISTRIBUTION STAT- A. Approved for public release; distribution le - ualliited. - - -_ - -_ I - is .- _-=_ - THIS DOCUMENT CONTAINS / PAGES. PROBLEM HARO CUPY EIA 455-23A 85 E 2575512 0054588 I W STANDARD ANSI/EIA 455-23A-1985 APPROVED AUGUST 7, 1985 U m EIA STANDARD FOTP-23
28、AIR LEAKAGE TESTING OF FIBER OPTIC COMPONENT SEALS EIA-455-23A - AUGUST 1985 Engneerw Department ELECTRONIC INDUSTRIES ASSOCIATION - J EIA Li55-23A 85 E 2575512 0054587 3 W NOTICE EIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandin
29、gs between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Pub- lications shall not in any respect preclude
30、 any member or non-member of EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA members, whether the standard is %o be used either domestically o
31、r internationally. Recommended Standards and Publications are adopted by EIA without regard to whether or not their adoption may involve patents on articles, materials, or processes. By such action, EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to
32、parties adopting the Recom- mended Standard or Publication. This EIA Recommended Standard is considered to have international stan- dardization implications, but the IEC activity has not progressed to the point where a valid comparison between the EIA Recommended Standard and the IEC Recommendation
33、can be made. Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 2001 Eye Street, N.W. Washington, D.C. 20006 Copyright 1985 ELECTRONIC INDUSTRIES ASSOCIATION All rights reserved . PRICE: $5.00 Printed in U.S.A. -. I- .- .T -, -, EIA LI55-23A 85 E 2575522 0054570 T W E IA- 4 5 5- 2
34、 3A Page 1 FOTP-23 AIR LEAKAGE TESTING OF FIBER OPTIC COMPONENT SEALSI (From EIA Standards Proposal No. ,1763, formulated under the cognizance of the EIA FO-6.4 Working Group on Fiber Optic Test Methods and Instrumentation.) NOTE: This FOTP was previously published in EIA/RS-455-2. 1.0 INTENT 1.1 Th
35、e intent of this test -is to establish the integrity of the sea1,of the interfaces in a fiber optics device (component or assembly, such as a connector); It may be conducted as one of the tests in a sequential test plan and after or during the exposure of the test sample to a specified low temperatu
36、re. A pressure differential is established between the front and rear faces of a mounted device. The degree of leakage through the seals of the test sample is measured by means of a detection device located on the low pressure side of the test sample . a 2.0 TEST EQUIPMENT 2.1 Hermetic Seal Test The
37、 test equipment shall be as follows: 2.1.1 Chamber capable of providing for: 2.1.1.1 Mounting of the test sample, by means of its flange, on the chamber divider which separates low from high pressure. 2.1.1.2 A gas tight seal at the flange mounting surface of test sample. 2.1.1.3 Surrounding the hig
38、h pressure side of the device with a tracer gas for hermetic testing. This method is similar to Method 1008 of MIL-STD-1344. .- q EIA 455-23A 5 M 2575532 0054573 3 I EIA-4 55-23A Page 2 2.1.2 Pressure or vacuum pumps or a pressure bottle with pressure control valve capable of achieving and maintaini
39、ng the pressure differential specified. 2.1.3 Gauges to permit verification of the pressure and/or vacuum. and/or of the pressure differential between the front and rear faces of the device during test. 2.1.4 A mass spectrometer detector to permit measurement of the tracer gas leakage rate through t
40、he device. 2.1.5 An appropriate tracer gas (helium, argon, or a mixture of 90% nitrogen and 10% helium). 2.1.6 A thermocouple (optional) 2.2 Environmental Ceal Test The test equipment shall be as follows: 2.2.1 An Jnsulated pressurizable chamber operable to -60 C and capable of withstanding an inter
41、nal pressure of 0.20 MPa (30 psi), including an internal container for mounting the device under test and equipped with piping to external fittings, as illustrated by Figure 1. 2.2.2 An air line pressure adapter. 2.2.3 An air line pressure regulator or gauge. 2.2.4 A graduated cylinder, 25mm (1 inch
42、) capacity. 2.2.5 Thermometer, readable to -60 Ce 0 2.2.6 Valves and plumbing, in accordance with Figure 1. (An alternate environmental seal test equipment arrangement in accordance with Figure 2 may be used in lieu of the arrangement of Figure 1.) 2.2.7 A thermocouple (optional) 3oB TEST SAMPLE A t
43、est sample shall consist of a terminated device a5 specified. The terminations shall not be brought out of the test chamber. ,- . , - .,- - EIA 455-23A 5 W 2575512 0054572 3 m *- .- - EIA-455-23A Page 3 0“ TEST PROCEDURE 4.1 Test Conditions Unless otherwise specified in the Detail Specification, all
44、 measurements shall . be made at the standard atmospheric conditions r.equired by EIA/RS-455, general requirements, Para. 4. 4.2 Mounting The test sample shal be. mounted on the chamber divider which seearates low from high pressure. A suitable opening must be provided in the divider such that, with
45、 the aid of greases and/or sealing -gaskets, a leak-proof junction is achieved between the flange of the test sample and the chamber divider. The test sample, after mounting in the chamber, shall be brought to and maintained at the desired temperature for at least 1/2 hour before conducting the test
46、. A thermocouple may be used to determine the samples temperature. When specified, such a thermocouple shall be attached to the inside of the device. 4.3 Applying Pressure The pressure differential between the front and rear of the device shall be maintained at-the value specified in the Detail Spec
47、ification. Depending upon the type of equipment used, this may be achieved (a) by evacuation of one side of the chamber while maintaining atmospheric pressure at the other side, (b) by pressurizing one side of the chamber with atmospheric pressure at the other side, or (c) by a combination of pressu
48、rizing one side of the chamber and partially evacuating the other side. 4.4 Leak Detection 4.4.1 Leak Detection for Hermetic Seal Devices The leak detector shall be connected to the low pressure or vacuum side of the chamber. The tracer gas shall be introduced at the high pressure side of the chambe
49、r in such manner that it surrounds the face of the device test sample. The leakage rate (if leakage exists) shall be measured, recorded and compared to the maximum allowable leakage specified. 3 - -f EIA 455-23A 5 2575532 0054593 5 EIA- 4 55-2314 Page 4 4.4.2 Leak Detection for Environmentai Seal Devices The graduated cylinder shall be filled with liquid and then inverted over the air exit tube from the test sample. The leakage rate shall be measured, recorded and compared to the maximum allowable leakage specified. 4.5 Test Sample Orientat
