INFICON CrystalSix Sensor - Manual (Page 15)

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CrystalSix Operating Manual
Chapter 2
Sensor Installation
Successful operation of any crystal sensor depends on proper placement,
compatibility of its construction with its operating environment and connection to
proper utilities.
NOTE: The sensor head, water tubes, cable, etc. should be clean and grease free
when installed in the vacuum chamber. These parts should be handled
while wearing clean nylon gloves. If parts do become contaminated, clean
them thoroughly using a suitable solvent to avoid outgassing and
excessive peeling of deposition material from the sensor’s surfaces.
CAUTION
Incorrect rotation direction will cause permanent damage
rendering transducer inoperative. Refer to
Figure 1-2 on
page 1-5 for proper direction of rotation.
2.1 Crystals in the CrystalSix Sensor
2.1.1 Handle the Crystal with Care
Always use clean nylon lab gloves and clean plastic tweezers when handling the
crystal. Handle the crystals only by their edges. Anything that comes in contact with
the crystal surfaces may leave contamination, which may lead to poor film
adhesion. Poor film adhesion will result in high rate noise and premature crystal
failure.
CAUTION
Do not use metal tweezers to handle crystals. Metal
tweezers may chip the edge of the crystal.