Accession Number : AD0703863

Title :   FLUID TIMER.

Descriptive Note : Technical rept.,

Corporate Author : PICATINNY ARSENAL DOVER N J

Personal Author(s) : Eskelund,Gerald R. ; Szoke,John

Report Date : MAR 1970

Pagination or Media Count : 25

Abstract : In past work consideration was given to various chemical and mechanical means of providing sterilization. As an outgrowth of this program, techniques were conceived, fabricated, and tested which used a silicone fluid flow through a porous metal disc to provide controlled reliable 30 day timing. Test work has revealed that reliable, reproducible flow rates can be achieved between -20F and 120F with flow rates which vary by no more than 2 to 1 over a 100F temperature span. Since this still provides a fair degree of uncertainty in field sterilization situations, work was undertaken to reduce the temperature dependence. A technique was conceived which used a bimetallic element to throttle the flow of fluid on the downstream side of the porous restrictor. A concept miniature design was proposed and testing performed with a workhorse model. (Author)

Descriptors :   (*TIMING DEVICES, *FLUID FLOW), STERILIZATION, SILICONES, POROUS METALS, TEMPERATURE, LIQUIDS

Subject Categories : Test Facilities, Equipment and Methods
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE