11 September 2013
15 August 2012
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, RADIATION COUNTER
This specification is approved for use by all Departments
and Agencies of the Department of Defense.
The requirements for acquiring the electron tube described herein
shall consist of this document and the latest issue of MIL-PRF-1.
DESCRIPTION: Thin end mica window, self-quenched counter tube for detection of low intensity beta radiation.
See figure 1.
Mounting position: Any.
Weight: 7 ounces (198.5 grams) nominal.
Mica window thickness
See footnotes at end of table I.
Qualification - Required.
Holding period (MIL-STD-1311) - 60 days.
Window test - 13/
Shelf life - Required (see conformance inspection, part 1).
Acceptance test - Required. 15/
Service-life guarantee (MIL-PRF-1) - With qualifying activity approval manufacturer may provide service-life
guarantee, in lieu of life test. Guaranteed tube operating time shall be 250 hours minimum.
Marking - Tubes sold under service-life guarantee shall be marked with contract number and with the number of
tube operating hours (250 hrs min) guaranteed.
This specification sheet uses accept on zero defect sampling in accordance with MIL-PRF-1, table III.
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