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Transpector CPM Operating Manual
4.3.6 Sensor and Transpector Electronics Module Subsystem
The sensor is a quadrupole partial pressure analyzer that analyzes gases by:
1
Ionizing some of the gas molecules.
2
Separating the ions by mass.
3
Measuring the quantity of ions at each mass.
The masses, unique for each substance, allow the identification of the gas
molecules from which the ions were created. The magnitudes of these signals are
used to determine the partial pressures (i.e., amounts) of the respective gases.
The Transpector electronics module mounts to the sensor and provides all of the
requirements for operating the sensor, making the appropriate ion current
measurements, communicating to a computer, and sending the resulting output to
the computer.
The Transpector electronics module cable box contains all the cable connections
to the various components of the CPM pumping system, including turbo pump,
gauges and solenoid valves. See
connections.
