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First Class Advanced Anemometer-Unheated

Make: Thies Clima                                      Model: 4.3351.10.000- Unheated
✅ The wind transmitter is designed for the acquisition of the horizontal component of the wind speed in the field of meteorology and environmental measuring technology.
✅ Measurand : Wind Speed.
✅ Sensor Type : Cup Anemometer
✅ Signal Output : Frequency (1082Hz @ 50m/s)
✅ Supplied With : Terminal plug, Instruction for Use, Factory test/ Calibration Certificates.

Thies First Class Advanced Anemometer-Unheated: 4.3351.10.000

The anemometer is made for the measurement of the capacity characteristics of wind power systems, the evaluation of location, and the acquisition of the horizontal component of wind velocity in the fields of meteorology and environmental measuring technology. Every criterion of IEC 61400-12-1 (2005-12) for an instrument of accuracy class 0.5 is satisfied by the anemometer.

Special characters are developed and optimized for dynamic behavior at low beginning value, less overspeeding, and strong turbulence intensity. The output contains a digital signal that represents the measurement value. It can be sent to process control systems, data loggers, display instruments, recording instruments, and data loggers.

Application and features of First Class Advanced Anemometer-Unheated



✅ Power curve measurement at wind power plants
✅ Wind potential studies
✅ Site appraisals
✅ Research purposes
✅ Meteorological Applications
✅ Class A compliance in accordance to IEC 61400-12-1 and 61400-12-1 Ed.2
✅ Worldwide the only Class S 0.5 anemometer according to IEC 61400-12-1 Ed.1 & Ed.2, ISO 17713-1, MEASNET
✅ Calibrated according to MEASNET and IEC 61400-12-1 Ed.2 (ilac-MRA)
✅ Frequency output (1082 Hz at 50 m/s)
✅ Supply 3.3 … 42 V DC
✅ Permissible Ambient conditions: -50 °C … 80 °C
✅ W/o heating
✅ Measurement Range: 0.3…75 m/s
✅ Accuracy: 1% of value or <0.2 m/s (0.3…50m/s)
✅ Survival Wind Speed 80 m/s (≥ 30 min)
✅ Linearity: r>0.99999 (4…20 m/s)
✅ IP 55
✅ 2 years warranty




Weight (Mass)

0.5 kg


290 x 240 mm


Form : rectangle, edge steepness < 1μsec
Frequency : 1082Hz @ 50m/s
Amplitude : is supply voltage, max. 15V
Push-Pull Output : output resistance: typical 100Ω ≥ 10V, 130Ω @ 5V, 230Ω @ 3.3V Constant power limiting on typical 25mA
Load : R ≥ 1kΩ, C ≤ 200nF (corresp. to length typical cable < 1km)

Power Supply

Electrical supply for opto-electronic scanning ;
Voltage : 3.3…48V DC (galvanic isolation from housing)
Current: 130μA typ. 150μA max. @ 3,3V bis 15,0V (w/o external load),180μA typ. 200μA max. @ 15V bis 48V (w/o external load)

Operating Environment

– 50…+ 80°C, all occurring situations of relative humidity (incl. dew moistening)

Protection Level

IP 55 (DIN 40050)

Standerd / Regulation

IEC 61400-12-1

Mast Diameter

Mounting on mast :
Outer diameter : ≤ 34mm
Inner diameter : ≥ 22mm
Note: mounting on mast is possible with separate adapter (option).

Wind Speed

Survival speed : 80m/s (min. 30 minutes)


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