INFICON Sputtering Sensor - Manual (Page 44)

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Sputtering Crystal Sensor Operating Manual
4.3 Retainer Spring Adjustment Instructions
Occasionally, you may become dissatisfied with the way the ceramic retainer is
secured in the crystal holder. To alter the magnitude of the retaining force, use the
following procedure.
Tools Required
Š Scribe or other pointed tool
Š Needle nose pliers (two required)
Procedure
1 Position the crystal holder with the crystal aperture oriented downward.
2 Insert the point of the scribe between the inside edge of the crystal holder cavity
and one of the two wire segments that protrude into the crystal cavity (
Figure
4-3 -a).
Figure 4-3 Location of the Transition Point
3 Using the scribe, gently remove the spring from its groove in the crystal holder
cavity.
4 Consult Figure 4-3 -b to determine the direction in which the ‘transition point’
must be relocated, to attain the desired retention forces. Moving this transition
point approximately 1/16" is generally sufficient.
5 Grasp the spring, with the pliers, just below the transition point. Using the
second set of pliers, bend the spring as illustrated by the dashed line in
Figure
4-3 -c to remove the existing transition point.
Wire
Scribe
Crystal Holder
Move location of transition point in this
direction to decrease retainer retention force.
Move location of transition point in this
direction to increase retainer retention force.
Location of Transition Point