PQuest Laser voltmeter battery and He blow-by

jim kruger jimkruger at yahoo.com
Mon Oct 20 13:07:20 PDT 2008


Over the weekend, problems with the laser reorder were reported.

I replaced the voltmeter battery and it seems to be working OK.

Please be very careful not to push the "Backlight" button.  It leaves the light on even if the meter is off and drains the battery very rapidly.

The He is again high, about 7.5 sccm for 10 Torr.  Perhaps the springs have been overheated again. The new springs seem more sensitive than the old generation.  Long, high power burn-ins may be the cause.
  Or maybe dirt on the stage again results in the higher He.

jim

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