WindSensor P2546-OPR Anemometer

DETAILS

Originally designed for marine environments, the P2546-OPR is ideally suited for wind resource assessment and power performance studies both onshore and off.

There are three versions of the P2546-OPR sensor: the P2546C-OPR (coil version), the P2546D-OPR (electronic version) and the P2546A-OPR (reed switch). Both versions of the sensor are fully compatible with all Symphonie series data loggers. However, NRG discontinued sales of the P2546A-OPR Anemometer as of July 2017 due to restrictions related to its mercury content. You will need to use when connecting more than six anemometers to a ; please see the table below for details. These sensors can also be integrated seamlessly with our .

Signal Conditioning Module Compatibility
Sensor Model Symphonie Logger Model Signal Conditioning Module
P2546A-OPR SymphoniePLUS3 and older SCM #3151 | Digital Anemometer
  SymphoniePRO None required
P2546C-OPR SymphoniePLUS3 and older SCM #3148 | Coil Anemometer
  SymphoniePRO None required
P2546D-OPR SymphoniePLUS3 and older SCM #3148 | Electronic Anemometer
  SymphoniePRO None required

Note: The P2546A-OPR contains 40mg of mercury and is no longer available for sale from NRG. We will reclaim and recycle the P2546A-OPR for our customers at no cost. For more information


Benefits

  • One-piece rotor anemometer head (OPR)
  • Durable construction with anodized aluminum and stainless steel
  • Low threshold speed
  • Low distance constant
  • Negligible overspeeding
  • Angular response independent of wind speed
  • Fully tested temperature performance
  • Symmetrical geometry
  • No external power source
  • MEASNET calibrated

SPECIFICATION

  MEASNET CALIBRATED (#6625) MEASNET CALIBRATED (#16401)
Description
Sensor type 3-cup anemometer 3-cup anemometer
Applications
  • Wind resource assessment
  • Meteorological studies
  • Environmental monitoring
  • Wind resource assessment
  • Meteorological studies
  • Environmental monitoring
Sensor range 0 m/s to 75 m/s (0 mph to 168 mph) 0 m/s to 75 m/s (0 mph to 168 mph)
Instrument compatibility All NRG Data Loggers All NRG Data Loggers
Input signal
Signal type (sensor output)
  • NPN open collector, frequency proportional to wind speed
  • NPN open collector, frequency proportional to wind speed
Output signal
Anemometer Transfer Function
  • Refer to individual calibration report for transfer function.
  • Refer to individual calibration report for transfer function.
Output voltage at threshold
  • 80 mV (peak-to-peak) minimum
  • 80 mV (peak-to-peak) minimum
Output voltage at 60Hz
  • 14 V (peak-to-peak) typical
  • Output amplitude NOT proportional to wind speed
  • 14 V (peak-to-peak) typical
  • Output amplitude NOT proportional to wind speed
Calibration Each anemometer individually calibrated, calibration reports provided via electronic download
  • Nonlinearity <0.04 m/s (0.09 mph)
  • Standard deviation of slope 0.027 m/s (0.060 mph)
  • Standard deviation of offset 0.014 m/s (0.031 mph)
 Each anemometer individually calibrated, calibration reports provided via electronic download
  • Nonlinearity <0.04 m/s (0.09 mph)
  • Standard deviation of slope 0.027 m/s (0.060 mph)
  • Standard deviation of offset 0.014 m/s (0.031 mph)
Output signal range
  • 0 Hz to 120 Hz
  • 0 Hz to 120 Hz
Uncertainty IEC 61400-12-1 Classification
  • Class 1.32A
  • Class 3.71B
  • Class S numbers can be calculated for any combination of influence parametrs within the Class B influence parameter ranges using WindSensor's class calculator.
 IEC 61400-12-1 Classification
  • Class 1.32A
  • Class 3.71B
  • Class S numbers can be calculated for any combination of influence parametrs within the Class B influence parameter ranges using WindSensor's class calculator.
Response characteristics
Threshold < 0.4 m/s (0.9 mph) < 0.4 m/s (0.9 mph)
Distance constant (63% recovery) 1.81 ± 0.04 m (5.94 ± 0.13ft ) 1.81 ± 0.04 m (5.94 ± 0.13ft )
Moment of inertia 1.01 × 10-4 kg-m2 (7.45 × 10-5 S-ft2 ) 1.01 × 10-4 kg-m2 (7.45 × 10-5 S-ft2 )
Swept diameter of rotor 187 mm (7.36 inches) 187 mm (7.36 inches)
Installation
Mounting Onto a 25 mm (0.984 inch) diameter mast with two set screws Onto a 25 mm (0.984 inch) diameter mast with two set screws
Tools required 4mm Allen wrench 4mm Allen wrench
Environmental
Operating temperature range -35 °C to 60 °C (-31 °F to 140 °F) -35 °C to 60 °C (-31 °F to 140 °F)
Operating humidity range 0 to 100% RH 0 to 100% RH
Physical
Connections Push-pull connector (purchased separately) Push-pull connector (purchased separately)
Weight 0.36 kg (0.8 pounds) 0.36 kg (0.8 pounds)
Dimensions
  • 3 cups of conical cross-section
  • 70 mm (2.76 inches) dia.
  • 282 mm (11.10 inches) overall assembly height
  • 3 cups of conical cross-section
  • 70 mm (2.76 inches) dia.
  • 282 mm (11.10 inches) overall assembly height
Materials
Cups Robust one-piece injection molded polycarbonate/glass blend Robust one-piece injection molded polycarbonate/glass blend
Body Anodized aluminum Anodized aluminum
Shaft Stainless steel Stainless steel
Bearing Stainless steel ball bearings Stainless steel ball bearings
Magnet One permanent ring magnet One permanent ring magnet