Pressure Sensor Technologies: Difference between revisions

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Created page with "Intro: Pressure sensing technology that we use in the lab mostly revolves around ionic and thermal applications of gas properties. Ion and thermal couple gauges respectively. ..."
 
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Intro: Pressure sensing technology that we use in the lab mostly revolves around ionic and thermal applications of gas properties. Ion and thermal couple gauges respectively.


Ion Gauges: A filament is charged and produces free electrons. These electrons roam free in the low pressure system until they bombard a gas atom. This bombardment knocks off an electron from the gas atom, creating a cation. This cation is attracted to a collector which completes a circuit between the filament and the collector. This current is measured and is directly related to the density of the remaining gas and subsequently, its pressure.
== The Thermocouple Gauge ==
[[File:iongauge.png|200px|thumb|left|alt text]
 
Thermocouple Gauge: A heated filament is placed into the low pressure system and allowed to cool. The rate of heat loss is directly related to gas density and subsequently, pressure.
[[File:Tc_gauge.png|600px]]
 
 
== The Ion Gauge ==
 
[[File:Ion_gauge.png|600px]]
 
 
== The Capacitance Gauge ==
 
[[File:Capacitance_gauge.png|600px]]
 
'''Useful Links:'''
 
[http://en.wikipedia.org/wiki/Ultra-high_vacuum| UHV - Wikipedia]

Latest revision as of 19:51, 7 November 2014

The Thermocouple Gauge


The Ion Gauge


The Capacitance Gauge

Useful Links:

UHV - Wikipedia

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