Vaisala WMT700 - Manual (Page 182)

User's Guide ______________________________________________________________________
Periodic Maintenance
WMT700 is a very reliable and rugged sensor. Since no moving
or consumable parts are used, no periodic maintenance is
required. WMT700 has been calibrated at the factory, and you are
not required to perform recalibration.
NOTE Periodic calibration of WMT700 is not required for technical reasons.
You can use the WM Verifier to test the mechanical integrity of the
device and perform one-point calibration.
However, some quality management systems may require regular
calibration of the measuring instruments.
To fulfill these requirements, Vaisala recommends that you recalibrate
the wind sensor every 24 months. Contact Vaisala Service Center for
more information.
Visual Inspection
Vaisala recommends that you carry out a periodic visual
inspection of the wind sensor to ensure correct operation and
clean the wind sensor if it becomes contaminated. If necessary,
you can also test the operation of WMT700 with an optional
verifier, which is a small echo-free chamber.
If any of the transducers have been bent, twisted or rotated, the
measurement results might not be accurate.
To avoid errors caused by a damaged array, check the following:
- Array has not been hit or bent. All transducers must be parallel
to each other.
- Transducers have not been scraped or touched with sharp
objects. The silicon rubber transducer sleeve must be
undamaged.
Cleaning
Regular cleaning of WMT700 is not required. If the wind sensor
becomes contaminated, you can clean it with a soft cloth
moistened with a mild detergent. Do not use solvents or a
pressure washer to clean WMT700, since they may damage the
silicon rubber transducer sleeve.
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