INFICON TM-400 Thin Film Deposition Monitor - Manual (Page 47)

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TM-350/400 Operating Manual
Chapter 6
Sensor Crystal Replacement
6.1 Introduction
The Sensor Head is designed for easy sensor crystal replacement and reliable
operation. The crystal lies in a drawer that slides into the sensor housing. Pull the
drawer straight out of the sensor housing by gripping the drawer's edges between
thumb and forefinger. With the drawer removed, pull straight up on the retainer
spring clip and shake out the spent crystal. Drop a new crystal into the drawer with
the full electrode side down and the pattern electrode side up. Make sure the
crystal is properly seated in the bottom of the drawer. Install the retainer clip by
gently pressing it onto the drawer. The retainer clip should snap into the drawer. All
three retaining legs must be fully engaged onto the drawer housing. Replace the
drawer into the sensor housing. The drawer should slide in easily and snap into
place.
Removal and replacement of sensor crystals should be performed in a clean
environment. An isolated clean workbench is recommended for crystal
replacement. To prevent crystal contamination use clean lab gloves or plastic
tweezers when handling the crystal and keep the new crystals in a closed plastic
case. When handling the drawer always hold it by the edges to avoid touching the
crystal surface.