3. Special conditions for use (X conditions)
6) Avoidance of vibration
Requirements for the installation point
If the line to the instrument is not adequately stable, an
instrument holder should be used for fastening. If vibrations
cannot be avoided by means of suitable installation, use
instruments with liquid filling. Protect the instruments against
coarse dirt and wide fluctuations in ambient temperature.
Permissible vibration load at the installation site
Always install the instruments in locations free from vibration.
If necessary, it is possible to isolate the instrument from the
mounting point, e.g. by installing a flexible connection line
between the measuring point and the instrument and mounting
the instrument on a suitable bracket. If this is not possible, do not
exceed the following limits:
Frequency range < 150 Hz
Acceleration < 0.5 g
7) When using thermowells, they must be filled with a thermal
contact medium in order to reduce the heat transfer resistance
between the outer wall of the probe and the inner wall of the
thermowell. The working temperature of the thermal compound is
-40 ... +200 °C.
8) Clean the thermometer with a moist cloth. Ensure that due to the
cleaning no electrostatic charge will be generated.
9) All accessories (e.g. thermowells or attachment components)
must be assessed in combination with the delivered instruments
by the end user. Particularly the requirements of grounding and
prevention of electrostatic charges must be considered.
WIKA additional operating instructions model 55 (ATEX)
EN
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