FT742

Feature FT742 FT722 FT702-V22
Speed range 0-75 m/s 0-50 m/s 0-50 m/s
Speed accuracy ±0.3m/s (0-16m/s)

±2% (16m/s-40m/s)

±4% (40m/s-75m/s)

±0.3m/s (0-16m/s)

±2% (16m/s-40m/s)

±4% (40m/s-50m/s)

±0.5m/s (0-15m/s)

±4% (16m/s-50m/s)

Directional accuracy Within ±10° datum: 2° RMS

> ±10° of datum: 4° RMS

Within ±10° datum: 2° RMS

> ±10° of datum: 4° RMS

Within ±10° datum: ±2°

> ±10° of datum: ±4°

Data update rate 10Hz 10Hz 5Hz
Mounting options Flat Front (FF)

Pipe Mount (PM)

Direct Mount (DM)

Surface Mount (SM)

Flat Front (FF)

Pipe Mount (PM)

Flat Front (FF)

Pipe Mount (PM)

Applications Wind Turbine Control (FF & PM)

Meteorology (DM)

OEM Integration (SM)

Wind Turbine Control Wind Turbine Control
Warranty 2 years 2 years 1 year
Error flag digital An invalid reading character of “1”is set in the wind velocity output message. An invalid reading character of “1”is set in the wind velocity output message. An invalid reading character of other than 0 is set in the wind velocity output message.
Error flag analogue Both speed and direction current loops drop to a default value of 1.4mA (configurable to 3.9mA) Both speed and direction current loops drop to a default value of 1.4mA (configurable to 3.9mA) Both speed and direction current loops drop to a default value of 1.4mA (configurable to 3.9mA)
Over-speed warning digital An over-speed character of “2” is set in the wind velocity output message. An over-speed character of “2” is set in the wind velocity output message. An over-speed character of “2” is set in the wind velocity output message.
Over-speed warning analogue The speed current loop is set to 20.0mA and the direction current loop is set by default to 1.4mA (configurable up to 3.9mA). The speed current loop is set to 20.0mA and the direction current loop is set by default to 1.4mA (configurable up to 3.9mA). Both speed and direction current loops drop to a default value of 1.4mA (configurable up to 3.9mA)
Over-speed warning default setting The separate over-speed warning scheme is off by default in which case an over-speed event is shown by the error flag. The over-speed scheme can be enabled by FT before despatch on request. The separate over-speed warning scheme is off by default in which case an over-speed event is shown by the error flag. The over-speed scheme can be enabled by FT before despatch on request. Not applicable
FIR Filter length Default 16 readings -1.6 secs. configurable to 64 readings – 6.4 secs. Default 16 readings -1.6 secs. configurable to 64 readings – 6.4 secs. Default 8 readings -1.6 secs. configurable to 64 readings – 12.8 secs.
Selective filter scheme Improved data processing scheme – off by default. Can be enabled on despatch. Contact FT for scheme details Improved data processing scheme – off by default. Can be enabled on despatch. Contact FT for scheme details
Part numbers FT742-D-FF, FT742-A-FF, FT742-D-PM, FT742-A-PM, FT742-D-DM, FT742-A-DM, FT742-D-SM FT722-D-FF, FT722-A-FF, FT722-D-PM, FT722-A-PM FT702LT-V22-FF, FT702LT/D-V22-FF, FT702LT-V22-PM, FT702LT/D-V22-PM, FT702LT/D50-V22-FF, FT702LT/D50-V22-PM, FT702LT/D60-V22-FF, FT702LT/D60-V22-PM, FT702LT/D70-V22-FF, FT702LT/D70-V22-PM