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FT702LM Wind Sensor

Specification Product Data Sheet
Sensor Performance:^1,2
Measurement Principle	Acoustic Resonance (compensated against variations in temperature, pressure and humidity)
Wind speed Measurement:
Range	0-50m/s
Accuracy	±4%
Resolution	0.1m/s
Zero Error	±0.1m/s
Wind Direction Measurement:
Range³	0 to 360°
Accuracy
FT702LM1	±2° RMS
FT702LM2	±5° RMS (with compass)
Resolution	1°
Data I/O:
Interface	RS422 full duplex
Format	Full range of user programmable functions. NMEA 0183 (MWV sentence) ASCII data output format.
Data Update Rate	5 measurements per second
Power Requirements:
Anemometer	3.5V to 30V dc @12mA (typical excluding data output drive current)
Heater	10V to 30V dc @ 2.5A (max)
Physical:
Dimensions	50mm x 78mm (dia. x height)
Weight	250g
Material	Aluminium alloy, hard anodised & impregnated with PTFE
I/O Connector	10 way connector (p/n Harwin M80-8671022). Mating connector (p/n Harwin M80-8891005)
Mounting Method	Threaded holes (M4) x6 in base
Environmental:
Operating temperature range	-40° to +85°C
Storage temperature range	-40° to +85°C
Humidity	0-100%
Water Ingress	Sealed to IP66 (when panel mounted using supplied gasket)
ESD Protection
Supply Lines	200V (10/700µs waveform, 40ohms source)
I/O Lines	25kV (Mil Std 883C - Method 3015-6) 16kV (IEC 61000-4-2 Air) 9kV (IEC 61000-4-2 Contact)

Notes:

1. All specifications subject to change without notice

2. Performance measured with sensor mounted on extended horizontal surface

3. With integral compass module (FT702LM2) wind direction output is relative to North. Without compass module (FT702LM1) wind direction is relative to sensor datum

FT702LM Option Chart
Order Code
FT702LM1	No compass module fitted
FT702LM2	Compass module fitted

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FT702LM Wind Sensor

Specification

FT702LM Option Chart