INFICON HAPSITE ER Chemical Identification System - Manual (Page 37)

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HAPSITE ER Operating Manual
1.6.4 Electronic Systems
The electronic systems in the HAPSITE are considered in four groups:
 Mass Spectrometer Control, see section 1.6.4.1 .
 Gas Chromatograph Control, see section 1.6.4.2 .
 Main Processor, see section 1.6.4.3 .
 Interfaces, see section 1.6.4.4 .
1.6.4.1 Mass Spectrometer Control
The mass spectrometer control electronics include the programmable DC and RF
power supplies for the mass selector, the DC power supplies for the filament, the
electron multiplier, the sputter-ion pump, and the A/D converter for the signal from
the electron multiplier.
1.6.4.2 Gas Chromatograph Control
The gas chromatograph control circuitry includes the power supplies for the
solenoid valves, the ovens and the heated inlet line. It also controls the logic for all
the valves and heaters of the GC system.
1.6.4.3 Main Processor
The main processor is supported by solid state memory, and is located in the
central electronics assembly. The main processor accepts data from many points
within the system. It controls all the other electronic sub-assemblies, both in routine
operation and in managing the data-taking methods.
1.6.4.4 Interfaces
There are several input/output devices within the HAPSITE. These include the front
panel touchscreen, keypad and display, the USB drive, the crossover cable
connection, the wireless connection, the hand control unit, the power and logic
connections to the Service Module, Headspace Sampling System, SituProbe™
and the pins which read the details of the gas mixture from the gas canisters.