Appendix A. Vs Series Leak Detector Hardware Descriptions - Agilent Technologies VS Series Operation Manual

Appendix A. VS Series Leak Detector Hardware
The VS Series Helium Mass Spectrometer Leak Detector system hardware locates and
measures the partial pressure of helium that is proportional to the desired Helium leakage
flow rate in a vacuum system under full software control. The VS Series leak detector
hardware provides:
High vacuum creation for a spectrometer
Helium detection and leak rate measurement
Microprocessor-based software control of all leak detector functions, mode and
operations such as:
VS Series hardware resides in a stand-alone unit with a metal enclosure compromised:
Spectrometer tube sub-assembly with a pre-amplifier PCB
Optional Internal Standard Calibrated Leak with a Temperature Sensor PCB
Turbo molecular pump
Electronics block sub-assembly with the CPU, Motherboard, Ion Source and Turbo
Controller PCBs
Front Panel with the color LCD Display
Discrete I/O PCB - with:
A fan
All VS Series leak detector hardware PCBs and sub-assemblies are interconnected using the
cables shown in Figure E-1 on page E-2.
VS Series Component Leak Detector
Descriptions
Spectrometer tube electrode parameters
Leak rate analog-to-digital and digital-to-analog conversion, calculation and
presentation via LCD Display, audio speaker, analog voltage and RS-232 outputs
Spectrometer and Test Port pressure measurement, calculation and presentation
via the LCD display and RS-232 output
Valve control (via I/O board)
Turbo molecular control
Front Panel control and indication
Discrete I/O reading and control
A control 3-way valve (optional standard leak)
Profinet Industrial Network
A-1