Hardware manual

Overview 1
Agilent 7500 Series ICP-MS Hardware Manual 1-19
Depending on the concentration of the analytes being measured, the detector
operates in one of two modes:
• Pulse mode for low sample concentrations.
• Analog mode for high sample concentrations.
Vacuum System
The sample is ionized in the plasma and the ions go through the interface, the
ion lens, and the mass filter to the detector. A lower vacuum pressure in the
vacuum chamber is required to transmit the ions. The Agilent 7500 has a
3- stage vacuum system which consists of the interface chamber, the ion lens
chamber, and the analyzer chamber.
Figure 13 Vacuum System
Interface Chamber
Ion Lens Chamber
Analyzer Chamber
Turbomolecular Pump
Rotary
Pump