Selecting Tune Masses; Selecting Masses For Tuning With A Cpm Test Mixture Calibration Reference - Inficon Transpector MPH Operating Manual

6.6.1.2 Selecting Tune Masses

The most important portion of mass scale tuning is determining which masses are
to be tuned.
Transpector MPH has two different calibration standards available as options.
 If Transpector MPH has the CPM Test Mixture Calibration Reference installed,
continue to
Mixture Calibration Reference, on page
 If Transpector MPH has the Argon Standard Calibration Reference installed,
continue to
Standard Calibration Reference, on page
If Transpector MPH does not have an optional calibration standard, there are three
different methods of tuning.
 To tune using a user-supplied test mixture, continue to
Selecting Masses for Tuning with a User-Supplied Test Mix, on page
 To tune using process gases, continue to
for Tuning with Process Gases, on page
To tune with background gases, continue to

Background Gases, on page

6.6.1.2.1 Selecting Masses for Tuning with a CPM Test Mixture Calibration Reference

The optional CPM Test Mixture Calibration Reference is a calibrated leak-rate that
consists of the chemical species shown in
Table 6-4 CPM Test Mixture Composition
Gas Specie
hydrogen (1%)
helium (1%)
nitrogen (1%)
argon (balance)
krypton
xenon
 100 AMU sensors use masses 2, 4, 28 and 86 for tuning
200 AMU sensors use masses 2, 4, 28, 86 and 134 for tuning

 300 AMU sensors cannot be fully tuned with the CPM Test Mixture
NOTE: Use the 200 AMU sensor masses for tuning from 1-200 AMU.
6 - 16
section 6.6.1.2.1, Selecting Masses for Tuning with a CPM Test
section 6.6.1.2.2, Selecting Masses for Tuning with an Argon
Tune Mass
2
4
28
N/A
86
134
Another calibration reference will be required to tune the
200-300 AMU mass range.
Transpector MPH Operating Manual
6-16.
6-17.
section 6.6.1.2.4, Selecting Masses
6-17.
section 6.6.1.2.5, Tuning with
6-18.
Table 6-4.
section 6.6.1.2.3,
6-17.