Max300-LG : Description - Specifications - Installation Guide
Extrel
Core Mass Spectrometers
Page 29
Figure 20: Locating Pins of Quadrupole
When this is completed, the quadrupole assembly can be inserted into the vacuum
chamber. Be sure the ionizer end will face the ionizer and the detector end will face the
the end nearest wires connecting opposite poles. Also, rotate the quad assembly so the
threaded hole in the edge of the ionizer end plate is on top.
As noted previously, the quadrupole is secured within the vacuum system by two screws.
One screw engages the ceramic mounting collar and one threads into the collar shield rod
assembly. The quad assembly should be slid far enough into the chamber so the holes in
the chamber for these screws line up with the matching holes in the quad assembly. This
can be observed by looking into the RF connection flange mounting port on top of the
vacuum system.
A bird’s eye view depicting the location of these holes is shown in Figure 21. Two 2-56
socket head screws with lock washers and the 5/64” hex wrench will be needed to secure
the assembly.
Figure 21: RF Connection Flange – Bird’s Eye View
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