Dynamax Inc
16
3.1 MaxiMet GMX600
MaxiMet GMX600 is an advanced compact weather station designed and manufactured by Gill
instruments using proven technology to measure meteorological and environmental parameters
to international standards.
The MaxiMet uses the Gill WindSonic wind speed and direction sensor. The WindSonic
measures the times taken for an ultrasonic pulse of sound to travel from the North (N)
transducer to the South (S) transducer, and compares it with the time for a pulse to travel
from S to N transducer. Likewise times are compared between West (W) and East (E),
and E and W transducer.
If, for example, a North wind is blowing, then the time taken for the pulse to travel from N
to S will be faster than from S to N, whereas the W to E, and E to W times will be the
same. The wind speed and direction can then be calculated from the differences in the
times of flight on each axis. This calculation is independent of factors such as
temperature.
The compass point and polarity of U and V if the wind components along the U and V
axis are blowing in the direction of the respective arrows.
MaxiMet can output the following wind readings depending on use of a Compass or GPS.
o
Relative wind
– wind speed and/or direction, uncorrected, but relative to the north
marker, which may not be facing North.
o
Corrected wind
– with the aid of the Compass Magnetic North corrected wind
direction can be output.
o
True wind
– wind speed and/or direction information corrected by GPS for any
direction misalignment of the north marker and/or for any motion of the station.
(E.g. vehicle or vessel).
A Met Spec Multi-Plate Radiation Shield is used. The special shield plate geometry, with
its double louvre design, provides excellent response time performance of quick ambient
