Inficon Transpector MPH, Operating Manual, Page: 127 / 160

6 - 15
Transpector MPH Operating Manual
6.6 Calibration
6.6.1 Mass Alignment
Transpector MPH is tuned such that it generates a known RF/DC ratio that allows
one mass to exit the quadrupole at a time. When tuning the mass scale of
Transpector MPH, the RF/DC ratio is fine tuned to each tune mass.
6.6.1.1 Factory Tuning
In the factory, Transpector MPH is tuned to different masses depending on the
mass range of Transpector MPH. The factory tune masses and width standards
are displayed in
Table 6-3 .
The gases that are used for factory tuning of these masses are:
 hydrogen (mass 1 and 2)
 helium (mass 4)
 nitrogen (mass 28)
 krypton (mass 86)
 xenon (mass 134)
 FC5311 (mass 293)
Table 6-3 Factory tune settings
100 AMU 200 AMU 300 AMU
Mass 10% R Mass 10% R Mass 10% R
1 0.5 ±0.10 1 0.5 ±0.10 1 0.5 ±0.10
2 0.9 ±0.05 2 0.9 ±0.05 2 0.9 ±0.05
4 0.9 ±0.05 4 0.9 ±0.05 4 0.9 ±0.05
28 0.9 ±0.05 28 0.9 ±0.05 28 0.9 ±0.05
86 0.9 ±0.05 86 0.9 ±0.05 86 0.9 ±0.05
134 0.9 ±0.05 134 0.9 ±0.05
293 0.9 ±0.05