Vaisala WS425FG User Manual
Page 68
User's Guide ______________________________________________________________________
66 ______________________________________________________________________________
seen on each ceramic transducer. The soldering spots on the
ceramic transducer must be oriented outside the array. For the
correct alignment, see
Figure 17 on page 67
. Do not rotate the
transducer if the soldering spot is not in the correct location.
Replace the anemometer.
2.
Do not pull the transducers. Pulling the transducers will destroy the
array of the ultrasonic anemometer. The black RTV sealant can be
seen between the bottom of each transducer and the transducer
mounting arm. The RTV sealant must be free of damage and it
must provide a good seal between the transducer and the transducer
mounting arm. If this seal is damaged, water may enter the
anemometer.
3.
Do not strike or bend the transducers. Striking or bending the
transducers will destroy the array of the ultrasonic anemometer.
All the transducers should be parallel to each other. For the correct
alignment, see
Figure 17 on page 67
.
4.
The verifier should slide over the transducers without excessive
force. This validates that the mechanical spacing of the transducers
is within specifications.
5.
Do not scrape or touch the transducers with sharp objects. Cutting
the silicon rubber sleeve on the transducer affects the acoustical
matching layer of the transducer and destroys the array of the
ultrasonic anemometer. The silicon rubber transducer sleeve must
not be damaged.
6.
Do not attempt to remove the center bird spike. Attempting to
remove it will destroy the array heating circuit of the ultrasonic
anemometer.