GHM DeltaOHM HD51.3D Series, Руководство по эксплуатации

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HD51.3D…
- 3 -
V2.0
1 INTRODUCTION
The instruments of the series HD51.3D… are 2-axis ultrasonic static anemometers. In addition
to the measurements of wind speed and direction, they also provide the U-V Cartesian compo-
nents of wind speed and the Wind Gust values. The average of wind speed and direction over a
period configurable up to 10 minutes is calculated.
Versions with housing in technopolymer or in anodized aluminium alloy with anti-corrosion
coating which allows the instrument to be used even in a particularly aggressive atmosphere
(e.g., marine environment) are available.
The versions with housing in technopolymer can optionally be equipped with an integrated
heater , in order to prevent the accumulation of snow and ice formation, allowing accurate
measurements in all environmental conditions.
The versions with housing in anodized aluminium alloy are always equipped with an enhanced
heater , for rapid defrosting.
The anemometers can optionally integrate the atmospheric pressure measurement. The ver-
sions with housing in technopolymer can optionally also integrate the temperature, relative
humidity and global solar radiation measurements, making the instrument a compact and light
meteorological station.
Available outputs:
•
RS232 , RS485 and RS422 isolated serial outputs with NMEA and MODBUS-RTU
standard protocols and ASCII proprietary protocol.
•
Two analog outputs, for wind speed and direction or for velocity U-V cartesian compo-
nents, which are factory-configurable within 4÷20 mA (standard), 0÷1 V, 0÷5 V or
0÷10 V ( to be specified when ordering ).
Mounting on
∅
40 mm mast. The optional function of detecting the orientation ( compass ) and
tilt angles allows the spatial orientation of the instrument to be determined at any time, al-
lowing installation on mobile vehicles (for example boats) or, in the case of fixed installations,
the automatic correction of both a possible misalignment with respect to the vertical axis and
an imperfect orientation of the instrument towards the North.
The high immunity to electromagnetic disturbances makes the anemometer suitable for meas-
urements in electrically noisy environments (e.g., industrial environments, wind farms, etc.).
All instrument sensors are factory-calibrated and do not require additional interventions of the
user (field calibration is not required).
The absence of moving parts minimizes the instrument maintenance.
The anemometers satisfy the requirements of the following standards:
•
MIL-STD-810G Method 509.6 and EN ISO 9227:2017 (salt fog anti-corrosion test)
•
MIL-STD-810F Method 521.2 (anti-icing/freezing rain test) – Only versions with hous-
ing in anodized aluminium alloy
•
EN 60945:2002 Sect. 8.7 / IEC 60068-2-6 (vibration resistance test) – Only versions
with housing in anodized aluminium alloy