Positive ion smoke detector using a tungsten wire preheated in h

Pressure controlled degas system for hot cathode ionization...

Pressure sensor and leak detector

Prevention of arcing in power supplies

Probe assembly for detecting an ion in a plasma generated in...

Process and apparatus for testing multi-layer composites and...

Proportional counter device for detecting electronegative specie

Removable discharge initiating means for cold cathode discharge

Residual gas analyzer

RF power probe head with a thermally conductive bushing

Sample imaging

Saturation current incipient soot detector

Self-balancing ionizer monitor

Sensor for detecting a high molecular weight substance using ion

Sensor with periodic heating

Shield arrangement for a vacuum cell

Silicon oxide contamination shedding sensor

Silicon oxide contamination shedding sensor

Sodium ionization detector

Species-selective pressure gauge with extended operation