F T 20 5 L I G HTW E IG H T
ACOU ST I C R E S ON A N C E W IN D SE NSOR

D ES I G NED FO R UAVs
B

The FT205 wind sensor weighs only 100g (3.5oz) and has been
specifically designed for use on drones and unmanned aerialvehicles (UAV). An integrated electronic compass makes it ideal
for use on a moving platform.
The FT205’s compact size and shape makes it physically strong.
It is resistant to electrical interference and is also fully-sealedand water-resistant. It is able to operate at altitudes up to4000m and at temperatures between -20°C and +70°C.

A

With low power requirements, reading up to 75m/s the FT205
Lightweight Wind Sensor is ideal for UAV flight control systems
and environmental monitoring from drones.

CThe FT205 has been designed to fit either to a pole or flat
surface and the sensor includes the parts to convert it to a pole
mount device. It can also be mounted upside down.

DI M E NS IONS
A. Sensor height		

55.1mm

B. Sensor diameter

56.4mmC. Mounting surface to cavity centre

20.4mm

D. Connector width

16.3mm

E. Recommended mounting surface hole

20mmDESP EC I F I C AT I O NS AT A GL ANC E
W E IG HT

100

WIND SPEED

g0-75

POWER USAGEm/s

THE WORLD’S TOUGHEST WIND SENSORSW W W. F T T E C H N O L O G I E S . C O M

30mA

F T 20 5 L I G HTW E IG H T

WIND SPEED 1

Range					0-75m/s		
0-270km/h
Resolution			
0.1m/s		
0.1km/h		Accuracy				±0.3m/s (0-16m/s)
					±2% (16-40m/s)
					±4% (40-75m/s)

0-145.8 knots
0.1knots

WIND DIRECTION 1Range 					0 to 360°
Resolution 				1°Accuracy				4° RMS
Compass accuracy			 5° RMS 4

ACOUSTIC TEMPERATURE 1, 2Resolution		 0.1°C
Accuracy		 ±2°C
Under the following conditions:
Speed Range		
5m/s - 60m/s
Operating Range-20°C to +60°C
Temperature Difference <10°C
between the air temperature and theactual temperature of the sensor.

SENSOR PERFORMANCE 1

Measurement principle 			Acoustic Resonance (automatically compensates for variations in temperature, pressure & humidity)
Units of measure 			Metres per second, kilometres per hour or knots
Altitude 				0-4000m operating range
Temperature range 			-20° to +70°C (operational), -40° to +85°C (storage)
Humidity 				0-100%

POWER REQUIREMENTS 3

Supply voltage 				6V to 30V DC operating range
Supply current				30mA typical

PHYSICAL

I/O connector 				Molex CLIK-Mate (connector part 505405-0860)
I/O cable 				Molex CLIK-Mate (600mm cable part 15135-0806)
Sensor weight 				100g
Sensor material				3D printed graphite and nylon composite
Mounting method			 Surface-Mount with compressed gasket and 3x screw fit. An adaptor is provided for pole-mounting					(the pole is not supplied)

DIGITAL SENSOR

Interface 				RS422 (full-duplex). RS485 (half-duplex), UART (full-duplex, 3V & 5V)
Format 				ASCII data, polled or continuous output modes, Polar and NMEA 0183
Data update rate 				10HzError handling 				When the sensor detects an invalid reading an error flag is included in the wind velocity output message					(see user manual for further details)
Overspeed Warning 			
The sensor has an optional overspeed warning scheme. This scheme is disabled by default but can be					enabled at the factory if requested. With the scheme enabled, if the sensor detects a wind speed greater					than 75m/s a character is set in the wind velocity output message (see user manual for further details).
All specifications subject to change without notice. Specifications calculated with the default settings and filters enabled. Kmph and knots are only
available when using NMEA 0183 mode.
2
Refer to user manual for further details.
3
A suitable PSU capable of providing up to 0.2A maximum is recommended. RS422 current load is dependent on topology and resistor values – RS422 in‘always enabled’ mode may draw higher currents. Refer to the user manual for further details.
4Requires user calibration, refer to the user manual for further details.
1FT Technologies Ltd
Sunbury House, Brooklands Close
Sunbury on Thames, TW16 7DX, UK
Tel: +44 (0)20 8943 0801 | info@fttechnologies.com
The FT and Acu-Res logos and the Acu-Res® nameare registered trade marks of FT Technologies Ltd.

THE WORLD’S TOUGHEST WIND SENSORSW W W. F T T E C H N O L O G I E S . C O M

A4302-2-EN
Information furnished by FT Technologies Ltd is believed
to be accurate and reliable. However, no responsibility isassumed by FT Technologies Ltd for its use; nor for any
infringements of patents or other rights of third parties which
may result from its use. No licence is granted by implicationor otherwise under any rights of FT Technologies Ltd.