Asdf - Adaptive Scroll Driving Firmware - Agilent Technologies TPS-compact Mode D'emploi

17 Technical Information
ASDF – Adaptive Scroll Driving Firmware
ASDF – Adaptive Scroll Driving Firmware
TPS – compact implements a function that safeguards the life of the
scroll pump Tip-seal. The function is described in the diagram below
where P is the turbomolecular pump power.
Inlet gas load is monitored measuring the turbomolecular absorbed
power. A power threshold ��
power is below the ��
valve is closed and integrated scroll pump is switched off. Since the
turbomolecular pump temporarily works without a backing pump,
the power necessary to maintain a stable inlet pressure tends to
increase. When the absorbed power exceeds the threshold power
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separation electromagnetic valve is re-opened. So, the ASDF is able
to extend the scroll Tip-seal life
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, then the integrated scroll pump is switched on and the
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is defined and if the turbomolecular
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, then the foreline separation electromagnetic
TPS-compact User Manual / 87-901-010-01 (H)