A-A-1381A
June 2, 1981
SUPERSEDING
A-A-1381
March 7, 1980
COMMERCIAL ITEM DESCRIPTION
LANTERN, ELECTRIC
(ONE CONCENTRATED BEAM)
The General Services Administration has authorized the use
of this
Commercial Item Description.
This commercial item description covers lanterns, dry-cell operated.
Salient characteristics:
The lantern shall be a complete unit including battery case, light source, switch, handle, reflector assembly, necessary wiring and contacts, spare beam lamp, and shoulder strap. The double barrel battery case shall be made of plastic to hold 6 “D” cells. A positive means of holding the batteries secure in the battery case shall be used. No special tools shall be needed to remove or replace the lamp or batteries.
Switch. Switches shall be one of the following types. Type A shall have three positions: “ON”, “OFF” and “FLASHER”. Type B shall have “ON” and “OFF” positions and a “DIMMER” device which provides a continuous range of brightness. The switch shall remain electrically operative after 25,000 cycles from “OFF” to “ON” and back to “OFF”. The battery shall be used in the switch test.
Impact resistance. After being subjected to a storage temperature of 0o + 2o hours, the plastic lantern shall show no evidence of damage when subjected to an impact of 1 foot-pound, using a 1 pound steel ball. The impact shall be applied to the base (side opposite the handle), the end opposite the reflector, and the lens rising.
Durability drop. After the plastic lantern has been at a temperature of 75 + 5o F for 2 hours, the lantern (batteries included) shall shown no evidence of damage when dropped from a minimum height of 3 feet into a box of loose dry sand with depth of 1 foot. Drop the lantern 3 times on base and 3 times on the end opposite the reflector. Battery damage shall not be cause for rejection.
Concentration beam. The concentrated light beam shall have a maximum diameter of 10 inches at a distance of 60 inches from the lens.
Beam candlepower. The minimum beam candlepower (candles) of the concentrated beam shall be 25,000 at 7.8 volts. The test distance shall be 10 feet between the lantern and photoreceptor. The photoreceptor shall be calibrated using the standard lamp with a color temperature of 2856oK. The photoreceptor shall have a minimum diameter of 1 inch and shall be equipped with a light filter to wield a response curve matching that of the International Commission Illumination Standard Observer. The calculation shall be as follows:
1= ED2
Where I= Illuminous intensity of the light beam in the candelas.
E= Illuminance reading of photometer calculated in footcandles
D= Distance between lantern lens and photometer.
Workmanship. The lanterns shall have no defects serviceability or appearance.
Certification. The contractor shall certify that the product offered meets the salient characteristics of this description, and that the product conforms to the producer’s own drawings, specifications, standards and quality assurance practices and is the same product offered for sale in the commercial marketplace. The Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract.
Recovered materials. The manufacturer shall utilize recovered materials to the maximum extent practicable.
Packaging, packing, and marking. The items shall be packaged in accordance with normal commercial practice and packed to assure acceptance by common carrier and provide product protection against loss and damage during multiple shipments, handling, and storage. The shipping container shall be in compliance with the National Motor Freight Classification and Uniform Freight Classification. Shipping containers shall be marked as specified in the contract or order.
PREPARING ACTIVITY:
GSA-FSS
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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