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NRG IceFree3 Heated Vane

The heated IceFree3 Vane is a proven and reliable solution for measuring wind direction in icing environments.

  • NRG IceFree3 Heated Vane

Configuration Options

The IceFree3 Heated Vane’s head is directly connected to a 10K ohms conductive plastic potentiometer located in the main body. When a constant DC excitation voltage is applied to the potentiometer, it produces an analog voltage output directly proportional to the wind direction.

The sensor’s potentiometer linearity is within 1 percent of wind direction, ensuring precise measurements. The signal output is an analog DC voltage. The internal heater is powered by 24 VAC and allows for an operating temperature range of -40°C to 80°C (-40 °F to 176 °F). The optional 120/240 VAC to 24 VAC Transformer - IceFree3 Sensors is available to step down 120/240 VAC grid power.

The IceFree3 Heated Vane comes with an 8 m potted cable that can be extended to your desired length using Power Cable Kit - IceFree3 Sensor 3C, sold separately and available in 10 meter increments up to 90 meters.

  • Constructed of cast aluminum with black anodized finish and heat-resistant paint
  • Efficiently transfers heat from encapsulated, self-regulating heaters
  • Easily mounts to a 27 mm (1.05") diameter mounting pipe
  • Powered by 24V AC or DC
  • Compatible with a wide range of remote site equipment
  8m (26.4') cable (#2450)
Description  
Sensor type continuous rotation potentiometric heated wind direction vane
Applications
  • wind resource assessment
  • meteorological studies
  • environmental monitoring
Sensor range 360° mechanical, continuous rotation
Instrument compatibility all NRG loggers
Output signal  
Signal type analog DC voltage from conductive plastic potentiometer, 10K ohms
Transfer function output signal is a ratiometric voltage
Accuracy potentiometer linearity within 1%
Dead band 8° Maximum, 4° Typical
Power requirements  
Supply voltage regulated potentiometer excitation of 1 V to 15 V DC
Heater supply voltage
  • 24 V AC/DC
  • optional transformer available
Heater supply current
  • Inrush: 8 A maximum
  • Steady state: 1 A at 20 °C (68 °F), 4 A under maximum thermal load (head frozen in clear ice then powered on)
Installation  
Mounting mounts to a 27 mm (1.05 inch) diameter (3/4 inch IPS) pipe with a 3/8 inch lock bolt; cabling exits into mounting pipe
Tools required 13 mm (0.5 inch) nut driver
Environmental  
Operating temperature range -40 °C to 80 °C (-40 °F to 176 °F)
Operating humidity range 0 to 100% RH
Physical  
Connections Signal Cable
  • red: excitation
  • black: common
  • white: signal
    Heater Cable
  • black/white: heater power (AC or DC)
Cable length 8.1 m (26.6 ft) signal and heater cables
Weight 1.23 kg (2.7 pounds)
Dimensions
  • overall assembly height: 239 mm (9.41 inches)
  • body diameter: 70 mm (2.75 inches)
  • swept diameter: 212 mm (8.38 inches)
  • center to tail radius: 106 mm (4.19 inches)
Materials  
Wing precision balanced aluminum with black anodized finish and heat-resistant black paint
Body cast aluminum with black anodized finish and heat-resistant black paint
Shaft centerless ground, stainless steel
Bearing
  • upper: sealed, stainless steel, ball bearing with application specific lubrication
  • lower: stainless steel bearing
Cable
  • Signal: 3 conductor 20 AWG, chrome PVC jacket with overall foil shield and drain
  • Heater: 2 conductor 20 AWG, Teflon jacket with overall foil shield and drain
Enclosure
  • sealed to IP55
  • heater is epoxy encapsulated to IP65
Signal generator glass reinforced thermoplastic shell
Heater fully encapsulated, self-regulating
Base cast aluminum with black anodized finish and heat-resistant black paint
Boom Extensions

Boom Extensions

Extend and retrofit NRG booms to meet your project’s needs with our boom extensions and adapter kits.

Transformer - IceFree3 Sensors

Transformer - IceFree3 Sensors

Use this transformer with IceFree3 heated sensors to convert 120/240 VAC to 24 VAC.

Power Cable Kit - IceFree3 Sensor 2C + 3C

Power Cable Kit - IceFree3 Sensor 2C + 3C

This kit provides a junction box and cabling to extend the standard power and signal cables included with the IceFree3 Anemometer and the IceFree3 Vane.

Mounting Boom | 1.93m (76"), Tubular, IF3

Mounting Boom | 1.93m (76"), Tubular, IF3

Mount IceFree3 Anemometers, IceFree3 Wind Direction Vanes and RM Young 27106T Vertical Anemometers on NRG TallTowers™.

Power Cable Kit - IceFree3 Sensor 3C

Power Cable Kit - IceFree3 Sensor 3C

These cables provide the power for the heating element in our IceFree3 Heated Vanes and come in a variety of lengths.

Sensor Terminal Boot

Sensor Terminal Boot

Protect your sensor terminal from exposure to the elements with a terminal boot.

Symphonie® SCM Card

Symphonie® SCM Card

Condition your sensor’s output signal so that a SymphoniePLUS3 Data Logger can read it by installing a Symphonie Signal Conditioning Module (SCM).

Mounting Boom | 1.93m (76"), Lattice, IF3

Mounting Boom | 1.93m (76"), Lattice, IF3

Mount IceFree3 Anemometers, IceFree3 Wind Vanes and RM Young 27106T Vertical Anemometers on third-party lattice towers.