Well one time nut did. Think its John and a ham K5??? call. He wrote the process up using an external supply. Thats why I have a 3KV supply on the shelf. Regards Paul WB8TSL
On Tue, Jun 19, 2018 at 8:43 PM, Perry Sandeen via time-nuts < time-nuts@lists.febo.com> wrote: > Yo Dudes! > A while back someone asked about the life of a HP Cs tube. > Fromthe HP 5061B Operators Manual: > “2.7 The shelf life of the cesium beam tube I twoyears at storage > temperatures up to +35 C (+95F) if the ion pump is operated 2 or 3 times a > year. If the ion pump is not operated to maintainthe vacuum within the > cesium beam tube, the expected shelf life is reduced.” > > “2.8 Temperature during storage and shipmentshould be limited as follows: > > a. Maximum temperature: +75 C (167F). Long term storage: +35 C (95F). > > b. Minimum temperature: - 40 C (-40). > NOTE: > Whenstoring the HP 5061B for 6 months or longer, set the MODE switch to CS > OFF andapply continuous as line power to the instrument. This enables the > ion pump to maintain thevacuum within the cesium beam tube with the cesium > beam tube off.” > Bold emphasis by HP > Mysnarky comment about 2.7. Shelf lifeinfers a tube uninstalled in > storage. OK,how about a detailed procedure with drawings, for taking the > tube and temporarilyrunning the ion pump to extend the shelf life?. > Apparently no oneread this comment and thought about its logical > implementation. > > > > Regards, > > > > Perrier > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to https://lists.febo.com/cgi- > bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to https://lists.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.