Wind Sensors / FT7 Series / Surface Mount – SM

FT742-SM ultrasonic wind sensorFT742-SM ultrasonic wind sensor

The FT742 Surface Mount wind sensor is designed for OEM integration. It has an electronic compass and a thermostatic heater. The sensor has been integrated into UAVs, drones, military vehicles, autonomous robots, handheld weather stations, drifter buoys, vehicle-mounted and ship-based meteorological systems. The sensor can be installed to ensure alignment with a standard reference, typically Magnetic North, or the integrated compass can calculate this automatically. Small, low power and extremely rugged, the FT742-SM is extensively tested and certified for vibration and shock resistance, and RF immunity.

WIND SPEED
0-75 m/s

HEIGHT
71.2 mm

OPERATING RANGE
40 to +85 °C

WEIGHT
252 g

GET A QUOTE
SPEAK TO AN EXPERT
  • Measures wind speed, direction and temperature
  • No moving parts, maintenance free
  • Compact size and shape make it physically strong
  • Powered by Acu-Res® Technology – gives a signal 40dB stronger than other ultrasonics
  • Acu-Res® software automatically compensates for changes in air temperature, pressure and humidity
  • Hard anodised aluminium body is corrosion resistant to ISO9227 & IEC12944, corrosion class C5M
  • Thermostatically controlled heating system – ideal for use in extreme environments
  • Fully-sealed and waterproof to IP66 and IP67
  • Shock-resistant, immune to vibration, electromagnetic interference and solar radiation
  • Operates at temperatures between -40°C and +85°C
  • Resists icing conditions to MIL-STD-810G
  • Operates at altitudes up to 4000m
  • No exposed parts – resistant to bird attack
  • Low power usage – even when heated
  • Wind speed can be output in m/s, km/h or knots
  • Available with digital RS485HD interface
  • Individually calibrated in our wind tunnel, no-recalibration required
  • Calibration results traceable by serial number, report available upon request
  • WIND SPEED
    (km/h & knots only available when operating the sensor in NMEA 0183 mode.
  • Range
  • Resolution
  • Accuracy
  • WIND DIRECTION
  • Range
  • Resolution
  • Accuracy (within ±10° datum)
  • Accuracy (outside ±10° datum)
  • ACOUSTIC TEMPERATURE
  • Resolution
  • Accuracy
  • Under the following conditions:
  • Speed Range
  • Operating Range
  • Difference between air and sensor temperature
  • SENSOR PERFORMANCE
  • Measurement principle
  • Units of measure
  • Altitude
  • Temperature range
  • Humidity
  • Ingress protection
  • Heater settings
  • POWER REQUIREMENTS
  • Supply voltage
  • Supply current (heater off)
  • Supply current (heater on)
  • Power consumption with heater disabled (for battery use):
  • PHYSICAL
  • I/O connector
  • Sensor height
  • Sensor width max
  • Sensor weight
  • DIGITAL SENSOR
  • Interface
  • Data encoding
  • Data update rate
 
  • WIND SPEED
    (km/h & knots only available when operating the sensor in NMEA 0183 mode.

  • Range

    0-75m/s | 0-270km/h | 0-145.8 knots

  • Resolution

    0.1m/s | 0.1km/h | 0.1knots

  • Accuracy

    ±0.3m/s (0-16m/s)
    ±2% (16-40m/s)
    ±4% (40-75m/s)

  • WIND DIRECTION

  • Range

    0 to 360°

  • Resolution

  • Accuracy (within ±10° datum)

    4° RMS

  • Accuracy (outside ±10° datum)

    5° RMS

  • ACOUSTIC TEMPERATURE

  • Resolution

    0.1°C

  • Accuracy

    ±2°C

  • Under the following conditions:

  • Speed Range

    5m/s - 60m/s

  • Operating Range

    -20°C to +60°C

  • Difference between air and sensor temperature

    <10°C

  • SENSOR PERFORMANCE

  • Measurement principle

    Acoustic resonance

  • Units of measure

    m/s, km/h or knots

  • Altitude

    0-4000m operating range

  • Temperature range

    -40° to +85°C

  • Humidity

    0-100%

  • Ingress protection

    IP66, IP67 - when correctly installed with supplied O-ring

  • Heater settings

    0° to 55°C

  • POWER REQUIREMENTS

  • Supply voltage

    6V to 30V DC (24V DC nominal). Supports battery operation with reduced heater capacity.
    EN 61000-4-29 only applicable when the sensor power supply is between 20V to 30V DC

  • Supply current (heater off)

    ~25mA (~29mA with compass enabled)

  • Supply current (heater on)

    Up to 2A

  • Power consumption with heater disabled (for battery use):

    Battery Supply Voltage Compass Disabled Compass Enabled
    24V 600mW 696mW
    12V 300mW 348mW
    9V 225mW 261mW
    6V 150mW 174mW

  • PHYSICAL

  • I/O connector

    Universal M12 8-pole circular connector

  • Sensor height

    71.2mm

  • Sensor width max

    56mm

  • Sensor weight

    252g

  • DIGITAL SENSOR

  • Interface

    RS422 (full-duplex). RS485 (half-duplex)

  • Data encoding

    ASCII

  • Data update rate

    Up to 10Hz

Datasheets:

User Manuals:
It is our policy to issue user manuals to existing customers only. However, in many circumstances we are willing to share sections of our manuals, if it will help to answer any technical queries you may have. To request a manual, please send us a request.

FT742-D-SM High Speed Wind Sensor Digital Surface Mount
FT742-D-SM KIT-1.5 High Speed Wind Sensor Digital Surface Mount with 1.5m cable

Environmental Tests

EN 60068-2-1: Cold
EN 60068-2-2: Dry Heat
EN 60068-2-14: Temperature Cycling
EN 60068-2-30: Cyclic Humidity
EN 60068-2-78: Stationary Humidity
EN 60068-2-38: Combined Temperature & Humidity
EN 60068-2-6: Sinusoidal Vibration
EN 60068-2-64: Random Vibration
EN 60068-2-27: Mechanical Shock
EN 60529: IP 6X Dust
EN 60529: IP X7 Immersion
DEF STAN 00-35 Issue 4: Wind Blown Dust Test
DEF STAN 00-35 Issue 4: Wind Blown Sand Test
ISO 9227 & IEC12944: Corrosion:
EN 60068-2-5: Solar Radiation
EN 60068-2-13: Altitude
EN 60068-2-31: Drop
EN 61215: Hail
DEF STAN 00-35: Fog
DEF STAN 00-35: Rain
MIL-STD-810G: Icing

EMC

EN 61000-6-3: Emission standard for residential, commercial and light-industrial environments
EN 61000-6-2: Immunity for Industrial Environments
EN 61000-4-2: Electrostatic discharge immunity test
EN 61000-4-3: Radiated, radio-frequency, electromagnetic field immunity test
EN 61000-4-6: Immunity to conducted disturbances, induced by RF fields
EN 61000-4-9: Pulse magnetic field immunity test
EN 61000-4-10: Damped oscillatory magnetic field immunity test
EN 61000-4-29: Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests

If you want to know more about FT wind sensors certification, visit the Product Certification page.