Product Summary
The FT702 is a solid-state meteorological
sensor, which uses a new, patented Acoustic Resonance airflow sensing technique
to measure accurately both wind speed and direction.
The acoustic resonance sensing technique
coupled with state-of-the-art signal processing gives the anemometer a wind
speed range of 0.1m/s to 70m/s.
The anemometer has been specifically designed
to be a cost-effective replacement for cup/vane and propeller devices. By
eliminating the well-known limitations of conventional mechanical anemometers,
the FT702 offers for the first time a high performance, affordable anemometer
that requires no routine maintenance or calibration.
Comprehensive measurement data (up to 5
readings per second) is available via either a serial RS422 (option A) or
serial RS485 (option B) interface.
The RS422 model has separate transmit and
receive terminals for full-duplex operation whereas the RS485 has a single
transmit/receive terminal. The RS485 model allows up to 32 FT702s to be
connected to a host terminal or data logger using a single twisted pair data
link.
Other interface options include dc voltage
and current loop outputs representing wind speed and direction.
The highly compact and symmetrical
arrangement of the acoustic resonant cavity results in a physically small (50mm
x 162mm), lightweight (0.5kgs) and robust anemometer. The FT702 is
environmentally sealed to IP67 allowing it to be used in a wide range of
demanding applications. Near-strike lightning protection is provided as
standard on all signal and power lines.
An integral heater is incorporated to prevent
icing. The heater can either be switched on or off as required (RS422 and RS485
options only) or it can be automatically controlled directly by the sensor.
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