F T 722- D M5 0 ( DIRECT MOUNT)A COU S T I C R ES O N A N C E W IN D SE NSOR

The FT742-DM50 wind sensor fits directly onto a 47.9 to
50.2mm OD pipe and reads wind speeds up to
50m/s. For ease of alignment, it can be fitted using ourspecial FT039 alignment collar and FT040/041 alignment
tools.
With superior corrosion resistance and lightning
protection, the DM50 has been specifically designed forwind turbine control. The hard anodised aluminium body ishighly resistant to corrosion, sand, dust, ice, solar radiation
and bird attack. The sensor is sealed to IP66, IP67 and IPX6Kstandard.
Small yet very rugged, it is designed to last for up to 20years, even in an offshore environment. With no moving
parts to degrade or damage and resistant to shock andvibration, it is easy to transport and can be used to upgrade
and retrofit older turbines.

ADI MENSION S
A. Sensor height

174mm

B. Sensor width max.

70mm

C. Mounting pipe outside diameter

50.2mm

D. I/0 connector width)

22.1mmDCBSP EC I F I C AT I O NS AT A GL ANC E
WI N D S PE E D0-50

WEIGHTm/s

535

AVAILABILIT Yg

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

99.9%

F T 722- D M5 0 ( DIRECT MOUNT)WIND SPEED
Range
Resolution
Accuracy

WIND DIRECTION

Range
Resolution
Accuracy (within ±10° datum)
Accuracy (outside ±10° datum)

SENSOR PERFORMANCE
Measurement principle			

Units of measure 			AltitudeTemperature range
Humidity
Ingress protection 			Heater settings 			POWER REQUIREMENTS
Supply voltage

Supply current (heater off )Supply current (heater on )PHYSICAL
I/O connector
Sensor weight

ANALOGUE SENSOR
InterfaceFormat

Configuration port
Error handlig 			0-50m/s
0.1m/s0.3m/s (0-16m/s)±2% (16-40m/s)±4% (40-50m/s)
0 to 360°
1°2° RMS
4° RMS

Acoustic Resonance (automatically compensates for variations in temperature,pressure & humidity)
Metres per second
0-4000m operating range-40° to +85°C (operating and storage)
0-100%
IP66, IP67 and IPX6K.
0° to 55°C. The heater set point can be configured
12V to 30V DC (24V DC recommended). Supports 12V battery operation with
reduced heater capacity
31mA typical
Limited to 4A (default), 6A (max) – configurable in software in 0.1A increments. Heater power 		
consumption will depend on the energy required to keep the sensor’s temperature at the user
determined set point. The heater and sensor power consumption is limited by default to 99W.
8-way (4-20mA option) multipole connector
535g

4-20mA, galvanically isolated from power supply lines and caseOne 4-20mA current loop for wind speed (different scaling factors are available). One 4-20mA current loop for winddirection (datum value configurable as 4mA or 12mA). Both analogue channels aer updated ten times per second
This non-isolated RS485 port is used to change the internal settings of analogue sensors and to perform
diagnostic testing. This interface is not intended for permanent connection to a data logger or otherdevice.
When the sensor detects an invalid reading then both speed and direction current loops will drop to a default
value of 1.4mA (configurable up to 3.9mA).

ALIGNMENT ACCESSORIESFT has developed two accessories to facilitate fast and precise alignment of the FT722-DM50 to a given datum. Both of these accessories are designed tobe used with a Laserboy II or comparable clamp-on laser unit.
FT040 - Mast Mounted Alignment Tool
The FT040 is used in conjunction with the FT039
Alignment Collar. Use FT040 to align the collar before
locking it in place. The alignment accessory can thenbe removed to fit an FT722-DM50 in the pre-alignedposition.

FT 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.

FT041 - Sensor Mounted Alignment Tool
The FT041 clamps onto the FT722-DM50, allowing
you to rotate the sensor to datum before locking it inplace. The alignment accessory can then be quickly
removed for use on the next sensor.

A123015-2-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
implication or otherwise under any rights of FT
Technologies Ltd.