V200A

Extremely precise and maintenance-free measurement of wind speed and wind direction.

Key features

Measuring wind direction and speed insusceptibly to bird nesting thanks to roofed construction
Built-in data pre-processing, universal interfaces and selectable output protocols – compatible with OTT-dataloggers, commercially available HydroMet dataloggers and PLS systems
Maintenance-free operation – no moving parts that can wear out thanks to ultrasonic measuring method; no need for re-calibration

Suitable for all climate zones; also for solar-powered automatic meteorological stations
Integrated heater that can be switched on if there is danger of frost – guarantees ice-free operation in extremely low temperatures until -40 °C
Embedded algorithms that provides the wind speed and direction as actual and averaged values
Wind gust calculation regarding WMO

The V200A offers extremely precise and maintenance-free measurement of wind velocity and wind direction as well as calculation of acoustic virtual temperature. The ultrasonic wind sensor is designed without mechanical parts as they have been used with traditional "cups and vanes". The digital or analogue output delivers instantaneous, average, minimum or maximum value with flexible measuring rate.

The V200A is heated so that it can still function in critical ambient conditions. Recommended for: meteorology or building automation. The following outputs/protocols are available: NMEA, ASCII, UMB and 4.. 20 mA analog.

Technical specification

Technical data

Dimensions	Ø approx. 150 mm, height approx. 170 mm
Weight	Approx. 0.8kg
Permissible ambient temperature	-40...60°C (with heating), -20...60°C (without heating)
Supply voltage with heating / without heating	24 VDC, max. 20 VA / 12 V
Bus operation	Up to 32 devices
Operating voltage electronics	24 VDC ±10 % or 24 VDC/1.2 VA without heating 12 VDC
Electrical connection	8 pole plug
Housing material	Plastic
Protection type	IP66
Pole diameter	50mm / 2"
Factory certificate	Yes

Data output digital

Interface	RS485 semi-/full duplex, isolated
Baud rate	1200 ... 57600
Measurement rate instantaneous value	250 ms; 1-10 s
Measurement rate avg (arithmetic, vector), Min, Max	1...10 min
Status	Heating, sensor failure

Data output analogue

Data output analog	Only semi-duplex mode
Output signal	0...20 mA, 4...20 mA, 0...10V, 2...10V, 2...2,000 frequency (instantaneous, avg, min, max)
Load	Max. 300 Ohm
Resolution	16 bit
Maximum operating height	3500m

Air pressure

Principle	MEMS capacitive
Measuring range	300 ... 1200 hPa
Unit	hPa
Accuracy	±1.5 hPa (0...40°C)

Wind direction

Principle	Ultrasonic
Measuring range	0 ... 359.9 °
Unit	°
Accuracy	< 3° (> 1m/s) RMSE
Resolution	0.1 °

Wind speed

Principle	Ultrasonic
Measuring range	0 ... 90 m/s
Unit	m/s
Accuracy	±0.3 m/s or ±3% (0 … 35m/s) RMS (the greater value counts); ±5% (> 35m/s) RMS
Resolution	0.1 m/s