ARMY A-A-52614-1997 LIGHT MARKER DIRECTIONAL FLASHING《闪光定向标记光》.pdf
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1、METRICA-A-52614September 23, 1997SUPERSEDINGMIL-L-52998A(ME)21 October 1988COMMERCIAL ITEM DESCRIPTIONLIGHT, MARKER, DIRECTIONAL, FLASHINGThe General Services Administration has authorized the use of this Commercial ItemDescription ( CID) for all federal agencies.1. SCOPE1.1 Scope . This CID covers
2、a self-contained, battery operated, low illuminance, high visualacuity, directional flashing marker light, herein referred to as light. The light is powered by two“AA” size alkaline batteries and is capable of operating for three months without replenishment ofthe batteries.1.2 Intended use . The li
3、ght is intended for use as a component of the Hand Emplaced MinefieldMarking Set ( HEMMS) to mark the perimeter and the safe lanes of mine fields. It features lowweight and can be rapidly emplaced. The light may be used for other appropriate purposes.2. SALIENT CHARACTERISTICS2.1 Materials . The lig
4、ht shall be constructed of corrosion resistant materials. Recoveredmaterials may be used in the construction of the light provided all requirements in this CID aremet (see 3.1). Recovered materials shall consist of previously used material which has beenreprocessed to become a source of new raw mate
5、rials.Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any datawhich may improve this document should be sent to: U.S. Army Tank-automotive andArmaments Command, TARDEC, AMSTA- TR-R/21, Warren, MI 48397-5000.AMSC N/A FSC 6230DISTRIBUTION STATEMENT A . Approved for
6、 public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5261422.2 Design and construction . The light shall employ a non-replaceable, red, light emitting diode(LED) as the source of illuminance. The light shall
7、be powered by two “AA” size alkalinebatteries and shall operate for three months without replenishment of batteries. Batteries shall bereplaceable without the use of tools. Component parts and circuitry shall be comprised ofcommercial parts which are in volume production. Simple operating instructio
8、ns shall beprovided.2.2.1 Dimensional requirements . The light shall interface with the support stanchions included inthe HEMMS kit by sliding into the tubular stanchion; and it shall interface with the HEMMScontainer by fitting into the approved container partitions.2.2.1.1 Overall length . The ove
9、rall length of the light shall not to exceed 130 millimeters (mm).2.2.1.2 Exposed outside diameter of cell tube . The exposed outside diameter of the cell tubeshall not exceed 16.0 +0.1/-0.2 mm.2.2.1.3 Outside size of lens assembly . The outside size of the lens assembly shall not exceed30 mm.2.2.2
10、Attachment clip . A pocket style, spring steel attachment clip capable of attaching the lightto an exposed edge of materials up to 4 mm in thickness shall be installed on the cell tube.2.2.3 Lens assembly . The lens shall be made of clear, impact resistant, ultraviolet stabilizedplastic with a horiz
11、ontal beam spread of 60 to either side of the centerline through the lens, and avertical beam spread of 35 above to 55 below the horizontal. Tolerances shall be 10 .2.2.4 Switch . The light shall include an internal, weather-protected switch mechanism for “on”and “off” activation. The switch shall b
12、e activated by rotating the battery cell tube clockwise inrelation to the head for “ON” and counter-clockwise for “OFF”.2.3 Performance requirements .2.3.1 Operating temperature . The light shall operate over a temperature range of -40 degreesCelsius ( C) to +50 C (low temperature i.e. -40 C operati
13、on determined by battery type).2.3.2 Operating voltage . The light (LED and control circuits) shall operate satisfactorily over avoltage range of 1.8 volts direct current ( Vdc) to 4.0 Vdc. In process manufacturing controlsshall be used to provide statistical verification of this requirement.Provide
14、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5261432.3.3 Flash period . The duration of a flash period shall be 0.80 0.12 second throughout thespecified voltage range (see 2.3.2) when tested at 20 5 C. The duration of a flash period shallbe 0.80 0.12
15、 second throughout the operating temperature range (see 2.3.1) when tested at3.10 0.05 Vdc.2.3.4 LED “on” time . LED “on” time shall be 0.040 0.006 second throughout the operatingtemperature range (see 2.3.1) when tested at 3.10 0.05 Vdc Verification shall be via inprocess manufacturing controls usi
16、ng a photo-receptor cell, an oscilloscope and a stabilized directcurrent voltage source for analysis of samples.2.3.5 Average current input ( ACI) . ACI shall not exceed 0.8 milliamperes when determinedusing the following equation:ACI = (Continuous current 0.95) + (“ON” current 0.05)2.3.6 Illuminanc
17、e . Illuminance shall be a minimum of 1.5 lux (lx) at 100 mm from the lens on thecenterline. Illuminance shall be not less than 0.6 lx when measured at a distance of 100 mm fromthe lens at the extremes of the horizontal beam (45 each side of the centerline). Illuminance shallbe measured using a Mino
18、lta Illuminance Meter Model T-1 or other photometer havingcomparable sensitivity. Illuminance shall be taken while “forcing” the LED switching device tothe “on” condition to obtain a stable continuous LED current which is the same as the peakflashing current when tested at 3 + 0.05 Vdc.2.3.7 Impact
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