P2546A

Three-Cup Anemometer with MEASNET Calibration
P2546A

P2546A

RetiredConfigurable

Three-Cup Anemometer with MEASNET Calibration

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Model:
P2546A
Item Number:
27599
Warranty:
1 year
Lead time:
40 days

Overview

WINDSENSOR Wind Anemometer Sensor w/Measnet Calibration

The P2546A, manufactured by WINDSENSOR, is a Class 1 anemometer often used for wind speed resource assessment and wind turbine power performance monitoring. Wind speed is sensed by a three-cup rotor assembly. Magnets mounted on the shaft cause a switch to close and open two times per revolution. Our data loggers measure the switch closure and convert the signal to engineering units (mph, m/s, knots). The anemometer is mounted using the 27739 30-inch mounting pole. The P2546A comes with a MEASNET calibration certificate.

The P2546C (coil version) and P2546D (electronic version) are also available.

Note: The P2546A, which includes a mercury reed switch and is not CE- or RoHS-compliant, has been replaced for most applications by the P2546D.

Key Advantages

IEC 61400-12 Class 1 Performance
Ideal for wind-energy applications

Technical Description

The P2546A is constructed with durable anodized aluminum and stainless steel. Its switch has no bounce and has a mechanism that reduces the variation in operating time over the frequency range.

Benefits

  • IEC Class 1 performance
  • Constructed from only durable materials such as anodized aluminum and stainless steel
  • No bounce switch
  • Mechanism reduces the variation in operating time over the frequency range
  • Compatible with many Campbell Scientific data loggers

Specifications

Sensor
3-cup anemometer
Measurement Description
Wind speed
Signal Type/Output
Contact closure

(pulse)

Range
0 to 70 m/s
Starting Threshold
< 0.4 m/s
Starting Speed
0.27 m/s
Gain
0.6201 m
Distance Constant
λ0 = 1.81 ± 0.04 m
Standard Deviation of Offset
0.014 m/s
Standard Deviation of Gain
0.027 m
Variation among Units
±1%
Non-Linearity
< 0.04 m/s
Temperature Influence
< 0.05 m/s

(-15° to +60°C)

-NOTE-
The specifications are based on 80 wind tunnel calibrations performed according to the Measnet Cup Anemometer Calibration Procedure.

The specified offset and gain figures represent the mean values of these calibrations. Variation among units designates the maximum deviation of any unit from the straight line representing these mean values. All units are run-in for 225 hours at 9 ms-1, in order to reduce the initial bearing friction to a level close to the steady state value. After run-in, bearing friction is tested at -15°C and at room temperature. The allowed limits for this test assure that the temperature influence on the calibration is within the specified limit.

Calibration

Standard
U=A0+B0×f
Wind Speed
U [m/s]
Offset
A0=0.27 m/s

("starting speed")

Gain
B0=0.620 m
Output Frequency
f [Hz]

Switching Characteristics

Signal Type
Potential free contact closure
Duty Cycle
40% to 60%
Maximum Switching Voltage
30 V
Maximum Recommended Switching Current
10 mA
Series Resistance
330 Ω, 1 W
Operating Temperature Range
-35° to +60°C

Related Resources

Documents

Connect With Us

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Phone Numbers
General: (435) 227-9000
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Corporate Address
815 W 1800 N
Logan, UT 84321
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Email Address
sales@campbellsci.com

As a trusted leader in measurement systems for more than 50 years, our top priority at Campbell Scientific has always been to provide the most accurate, reliable data for research and industry.