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Specifications

4718 IceFree Hybrid XT Heated Anemometer

Applications

wind turbine control for onshore and offshore turbines in all weather conditions

Instrument compatibility

digital inputs of turbine controllers or PLCs

Sensor range

maximum speed 70 m/s (157 mph)

Signal type

high level square wave frequency (see manual for details)

amplitude equals supply voltage

other formats available using optional Hybrid Personality Module

Transfer function

m/s = Hz x 0.5 - 0.5

(miles per hour = Hz x 1.118 - 1.118)

Accuracy

99.7% of sensors fall within 2% of the specified slope

calibration available upon request

Output signal range

1 to 141 Hz

0 Hz output indicates fault

Recommended load resistance

1200 ohm minimum

Response characteristics

threshold: <2 m/s (<4.5 mph)

ASTM D5096-2 in accordance with "Anemometer Performance Determined by ASTM Methods", Lockhart

Power requirements

Electronics

supply voltage: 8 to 24 V DC

supply current: 40 mA typical (not including heater)

Heater

supply voltage: 24 V (AC or DC)

supply current:

- self-regulating heater contained within an aluminum head

- 1 to 4A, thermal load dependent

- cold start inrush current: 9A peak

- inrush drops below 4A within 30 seconds

Cable & connections

quick-release connector mount

braided shield with shield wire

600V rated insulation

outside diameter of cable = 8.89 mm (0.350 inches)

two heater wires (20 AWG)

three sensor wires: power, common, signal (22 AWG)

Weight

1.45 kg (3.2 lbs)

Dimensions

overall height: 238mm (9.35 inches)

swept diameter of rotor: 127 mm (5 inches)

body diameter: 58 mm (2.28 inches)

Materials

cup head: anodized aluminum

body: zinc

shaft: stainless steel

bearing: double-shielded stainless steel ball bearings in a protective cartridge

Compliant with:

UL61010-1

CE

Operating temperature range

-40° C to 60° C (-40° F to 140° F)

Humidity range

0 to 100% RH

Environmental

IP55

IP5X Dust Intrusion per IEC 60529 and DIN40050-9

IPX5 Water Jet per IEC 60529 and DIN40050-9

MIL-STD-810F Method 509.4 (96 Hour Salt Fog Corrosion)

IEC 60068-2-52, Severity 1 (28 Day Salt Fog Corrosion) (pending verification)

IEC 60068-2-38 Z/AD (Cyclic Humidity & Temperature)

IEC 60068-2-78 (Constant Humidity)

Vibration Testing

IEC 60068-2-6

IEC 60068-2-64

MIL-STD-810G 514.6 Annex D per profile 514.6D III Category 14 (pending verification)

Packaging meets ISTA 1A Drop Test