Removable discharge initiating means for cold cathode discharge

Details Removable discharge initiating means for cold cathode discharge Removable discharge initiating means for cold cathode discharge

1992-02-28

1993-03-30

Strecker, Gerard R.

Electricity: measuring and testing

Using ionization effects

For monitoring pressure

324460, 324464, 315150, 313270, 250382, G01L 2134, G01N 2762

Patent

active

051987724

ABSTRACT:
A cold cathode gauge including a glow lamp or the like disposed within the vacuum space of the gauge for initiating the gauge discharge, the lamp emitting UV or blue light directly at at least the cathode of the gauge where the energy of the light is sufficient to release photoelectrons from the cathode to thus initiate the discharge. A member is also provided for removably positioning the glow lamp within the vacuum space whereby the lamp can be removed during bake out and then subsequent thereto, be inserted within the vacuum space to thus enhance longevity of the lamp.

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