Anemometer Thies First Class Advanced X
Classied according to IEC 61400-12-1 Edition 2.0 (2017-03)
Intelligent optically-scanned cup anemometer
Thies First Class Advanced X is classied acc. to IEC 61400-12-1 Ed. 2.0 (2017-03).
It has been designed to measure:
• Horizontal wind speed
• Absolute and relative air pressure
• Inclination X, Y and Z
• Acceleration, frequency and amplitude of vibration measurement in X, Y and Z
The anemometer is designed for measuring of wind resources for assessment
reports and power curves. The sensor is characterized by minimal deviation from
cosine line, optimized dynamic behavior even at highly intense turbulences, mini-
mal overspeeding, low starting value and optimized oblique inow behavior. It re-
quires only low maintenance thanks to its low-inertia and ball-bearing cup star.
For winter operation the electronically regulated heating guarantees smooth run-
ning of the ball bearings and prevents icing of shaft and slot.
Intelligent correction of measurement values
The sensor integrates an automatic correction of the wind speed measurement value depending on air pressure. The
revolutions per minute (rpm) of the cup star depend on air density and thus on air pressure. The correction is imple-
mented for 700 ... 1100 hPa. The anemometer output covers both original and corrected measurement values.
Calibration
Wind speed is determined by the linear function of the frequency output f:
wind speed [m/s] = slope [m] × f [Hz] + offset [m/s]
(Manufacturer instructions: Slope = 0.0462 m, Offset = 0.21 m/s)
For wind resource assessment, anemometers have to be calibrated acc. to MEASNET. Thies First Class Advanced X can
save slope and offset values determined during calibration. Thus no further corrections have to be made. We recom-
mend calibrating anemometers in the wind tunnel of Ammonit Wind Tunnel GmbH (ammonit-windtunnel.com).
Classication acc. to IEC 61400-12-1 Edition 2.0 (2017-03)
The direct inuence of air density was measured using a specially designed variable air density wind tunnel, instead of
calculating the inuence of air density by using torque measurements.
Class A Class B Class C Class D
Heating ON 0.65 0.9 0.7 0.9
Heating OFF 1.1 1.8 3.3 3.3
Source: Summary report AK 151023-1.1 Cup Anemometer Classication, Deutsche WindGuard
Tunnel Services GmbH, Varel, Germany, 2017.
Operational standard uncertainty acc. to IEC 61400-12-1
The operational standard uncertainty describes the maximum deviation of
the wind speed measured by the anemometer compared with the real wind
speed. The table indicates the operational standard uncertainty at 10 m/s:
Class A Class B Class C Class D
Heating ON 0.04 m/s 0.05 m/s 0.04 m/s 0.05 m/s
Heating OFF 0.06 m/s 0.10 m/s 0.19 m/s 0.19 m/s
Linearity (MEASNET)
The MEASNET required linearity for anemometers is r > 0.999 95.
The Thies First Class Advanced II offers r > 0.999 99 (4 ... 20 m/s).
page 1/5
Dimensional drawing
Anemometer Thies First Class Advanced X
page 2/5
Specication
Characteristics
Physical functionality Optically-scanned cup anemometer
Delivered signal Frequency output (pulse) and RS485 (Modbus)
Accuracy
Accuracy wind speed ±1% of measured value or < ±0.2 m/s @ 0.3 ... 50/s
Accuracy housing temperature ±1° (Measurement range: -40 ... +80 °C)
Accuracy air pressure ±1 hPa @ 20°C (Measurement range: 300 ... 1100 hPa)
Accuracy inclination (X, Y, Z) ±1° (Measurement range: -89.9° ... +89.9°)
Accuracy vibration (X, Y, Z) ±0.4 Hz (Measurement range: 0 ... 50 Hz)
Accuracy acceleration ±30 mg (Measurement range: ±8 g)
Linearity Correlation factor r between frequency f and wind speed y
r > 0.999 99 (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 ow into cups Deviation Δv turbulent compared with stationary horizontal ow
-0.5 % < Δv < +2 %
Frequency < 2 Hz
Wind load Approx. 100 N @ 75 m/s
Operating range
Measuring range 0.3 ... 75 m/s
Survival speed 80 m/s (mind. 30 min)
Permissible ambient conditions -40 ... +80 °C, 0 ... 100% RH including condensation
Electrical data
Output signal (frequency) Form rectangle, 1090 Hz @ 50 m/s, supply voltage max. 15 V
Output signal (RS485) Modbus protocol, bus-compatible
Half duplex, data format: 8N1
Baud rate: 2400, 4800, 9600, 19200, 38400, 57600
Electrical supply for optoelec. scanning Voltage: 3.7 ... 42 VDC (galvanic isolation from housing)
typically 40 mA, max. 100 mA
Electrical supply for heating
(only S11200H)
Voltage: 24 V AC/DC (galvanic isolation from housing)
Idling voltage: max. 30 VAC, max. 42 VDC
Power consumption: 25 W
General
Connection 8-pole plug-connection for shielded cable in the shaft
Mounting on mast tube R1”
Dimensions 290 x 240 mm
Fixing boring 35 x 25 mm
Weight approx. 0.5 kg
Material Housing
Cup star
Anodised aluminiun
Carbon-bre-reinforced plastic
Type of bearings Metallic ball bearings
Protection IP 55 (DIN 40050)
Patent EP 1 398 637, DE 103 27 632, EP 1 489 427
EMC EN 61000-6-2, EN 61000-6-3, EN 61010-1, EN 50581
Manufacturer Thies
Accessory Module set M83575 (incl. isolated repeater)
Anemometer Thies First Class Advanced X
Sensor connection to Ammonit Meteo-40 data logger
Sensor Plug Pin No. Ammonit Cable Wire Colour Meteo-40 Supply Sensor
Pulse 1 green CNT
Data + 5 white B+
Data - 4 brown A-
Supply + 3 pink 3.7 ... 42 VDC*
GND 2 grey GND / PAS
Heating
7 red
24 VAC/DC (25 W)
8 blue
* Supply voltage for usage with Meteo-40 data loggers.
Cable type without heating: LiYCY 3 x 2 x 0.25 mm²
Cable type with heating wires: LiYCY 4 x 2 x 0.5 mm²
page 3/5
Sensor connection diagram to Ammonit Meteo-40 data logger
Connection recommendations for the cable shield
Sensor carrier Sensor Shielding / Ground
Metallic met mast, grounded Non-isolated mounting on the met
mast (e.g. by using metallic brackets,
holders, etc.)
Connect cable shield only at the side of
the data logger to ground.
Metallic met mast, grounded Isolated mounting at the met mast (e.g.
by using non-metallic brackets, holder
etc. or metallic brackets, holders etc.
with isolated plastic adapters)
Connect cable shield at sensor plug
and at the side of the data logger to
ground.
Metallic met mast, non-grounded Non-isolated mounting on the met
mast (e.g. by using metallic brackets,
holders etc.)
page 4/5
Anemometer Thies First Class Advanced X
Plug and cable assembly
Coupling socket, Type: Binder, Serial 423, EMC with cable clamp
Cable connection: WITH cable shield
1. Stringing parts on cable acc. to plan given above.
2. Stripping cable sheath 20 mm
Cutting uncovered shield 15 mm
Stripping wire 5 mm
A) Putting shrink hose or insolation tape
between wire and shield
B) If cable diameter permits, put the shield
backward on the cable sheath.
3. Soldering wire to the insert, positioning shield in
cable clamp.
4. Screwing-on cable clamp.
5. Assembling remaining parts acc. to plan above.
6. Tightening pull-relief of cable by screw-wrench
(SW16 and 17).
A)
B)
Cable connection: WITHOUT cable shield
1. Stringing parts on cable acc. to plan given above.
2. Stringing cable sheath 20 mm
3. Cutting uncovered shield 20 mm
4. Stripping wire 5 mm
5. Soldering wire to the insert.
6. Positioning shield in cable clamp.
7. Screwing-on cable clamp.
8. Assembling remaining parts acc. to plan above.
9. Tightening pull-relief of cable by screw-wrench
(SW 16 and 17).
Seal Coupling ring Female insert
Cable clamp
Sleeve
Cable-pull-relief
Seal Thrust collar
Pressing screw
Cable shield
Shield
Cable clamp
Wire
Cable shield
Cable clamp
Wire
page 5/5
Anemometer Thies First Class Advanced X
Abstract: Summary of cup anemometer classication
According to IEC 61400-12-1 Edition 2.0 [2017-03] Classication Scheme
Reference:
Deutsche WindGuard Wind Tunnel Services GmbH AK 151023-1.1
Measuring period: 04.2014 - 05.2017
Test site: Varel, Germany
Wind Tunnel: Deutsche WindGuard Wind Tunnel Services GmbH, Varel
Tilt Angular Response
According to:
• IEC 61400-12-1 Edition 2.0
Wind Turbine Power Performance Testing 2017-03
• WindGuard Quality System Procedure for Calibra-
tion of Wind Speed Sensors at non-horizontal inow
conditions: D 5832
Result:
Figure showing the of axis response of Thies First
Class Advanced X anemometer for wind tunnel
speeds of 4 m/s, 8 m/s, 12 m/s and 16 m/s.
Class A Classication
According to:
• IEC 61400-12-1 Edition 2.0
Wind Turbine Power Performance Testing 2017-03
Inuence parameter range:
Wind speed range:
Turbulence intensity range:
Turbulence structure:
Air temperature:
Air density:
Flow angle:
Wind simulation:
V = 4 ... 16 m/s
0.03 - 0.12+0.48/V
1.0/0.8/0.5
0 ... +40 °C
0.9 ... 1.35 kg/m³
-3° ... 3°
Kaimal wind spectrum with longitudinal
turbulence length scale of 350m
Result:
Classication Index: A 0.65 (Internal shaft heating: On)
Classication Index: A 1.10 (Internal shaft heating: Off)
Source: Summary of Cup Anemometer Classication, Adolf Thies GmbH & Co.KG,
Deutsche WindGuard Wind Tunnel Services GmbH, Varel, 2017.
