ANEMOMETRE


CHARACTERISTIC

DESCRIPTION / VALUE

Measuring range

0.3...75 m/s

Accuracy

0.3...50 m/s <1% of meas. value or < ±0.2 m/s

Survival speed

80 m/s (min. 30 minutes)

Permissible ambient conditions

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

Output signal

Form: rectangle, edge steepness <1 μsec
Frequency: 1082 Hz at 50 m/s
Amplitude: is at supply voltage, maximum 15 V
Push-Pull output resistance: typical 100 Ω ≥10 V, 130 Ω at 5 V, 230 Ω at 3.3 V Constant power limiting on typical 25 mA

Open drain output: drain resistance typical 50 Ω, Pull-Up-voltage maximum 30 VConstant power limiting on typical 50 mA
Load R≥1 kΩ, C≤200 nF (corresp. to length typical cable <1 km)

Linearity

Correlation factor r between frequency and wind speed y=0.0462*f+0.21 typical
r>0.99999 (4...20 m/s)

Starting velocity

<0.3 m/s

Resolution

0.05 m wind run

Distance constant

<3 m (acc. to ASTM D 5096 – 96) 3 m acc. to ISO 17713-1

Turbulent flow

Deviation Δv turbulent compared with stationary horizontal flow 0.5% <Δv <+2%
Frequency <2 Hz

Classification

According to IEC 61400-12-1 (2005-12) Class A classification index A 0.9 Class B classification index B 3.0 Class S classification index S 0.5

Wind load

Approx. 100 N at 75 m/s

Heating

Surface temperature of housing neck >0 °C at 20 m/s up to -10 °C air tempe- rature, at 10 m/s up to –20 °C using the THIES icing standard 012002 on the housing neck
Heating regulated by temperature sensor

Electrical supply for opto-electronic scanning

Voltage: 3.3...48 VDC (galvanic isolation from housing)
Current: 130 μA typ. (150 μA maximum at 3.3...15 V w/o external load) 180 μA typ. (200 μA maximum at 15...48 V w/o external load)

Electrical supply for heating

Voltage: 24 V AC/DC, 54...65 Hz (galvanic isolation from housing) Idling voltage: maximum 30 VAC, maximum 48 VDC
Capacity: 25 W

Weight

Approx. 0.5 kg

Protection

IP 55 (DIN 40050)