Anémomètre de référence

Anémomètre de référence

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The Long-baseline Optical Anemometer (LOA-105) uses optical scintillation to detect changes occurring in small parcels of air whose temperature and density differ from their surroundings. The LOATM is vastly superior to traditional type sensors and offers the reliability and proven performance you need!

OSI's LOA-105 sensor provides accurate measurement of wind or turbulence in all weather conditions. Designed for rugged, unattended operation, these sensors are designed for both interior and exterior applications.

OSI Wind & Turbulence Sensors are not affected by many of the environmental factors that cause significant errors with traditional wind sensing.


  • Advanced technology, high performance and proven reliability.
  • Long-term reliability: operates unattended 24 hours/day, 7 days/week.
  • Designed for low maintenance.
  • Rugged: designed for harsh environments
  • Easy installation and optical alignment.
  • Self diagnostics & Testing: continuously monitors performance & informs user of trouble
  • CE, CSA & UL Certified. OSI is ISO-9001.


TST-104 Field Test Kit: for testing and calibration.
LDM Limited Distance Modem: for distances > 100 ft. (max = 7 miles).

1103-152-xxx Extended Data Cable: where xxx is the total cable length in feet.

1506-107 LOA Pneumatic & Alignment Apparatus: The pneumatic & alignment apparatus is designed to simplify the installation of the LOA

Ordering Informations

Part number: LOA-105-xR

  • A for 115 VAC, 50/60 Hz
  • B for 230/240 VAC, 50/60 Hz
  • C for 100 VAC, 50/60 Hz
  • D for 12 VDC
  • E for 220 VAC

The electro-optical design delivers an extremely sturdy and reliable sensor, immune from external influence. The sensors use AGC circuitry to eliminate the effects of LED output power drop, contaminated optics, or dusty air. Diagnostics alert the user if the signal strength is too low for normal operation.

Preventative maintenance, suggested every 6 months, is as simple as cleaning the optical windows, verifying the optical alignment, and checking the calibration of the electronics assembly.

OSI’s LOA-105 sensors are based on technology tested and approved by the National Oceanic and Atmospheric Administration (NOAA),and the Environmental Technology Laboratories (ETL).

Performance Specification
Cn2 Turbulence Range10-16 to 10-12 m-2/3
Cn2 Turbulence Path Length  0.1 to 3 km
Wind Range0 to 40 m/s
Wind Path Length 0.1 to 10 Km
Electronic Specification
Power Requirements Transmitter115 VAC, 50/60 Hz, 12 VA, or +12 VDC
Electronic Enclosure Universal 100-240 VAC, 50/60 Hz, 40 VA, Surge Protected
Signal OutputRS-232 ASCII, 1200 baud
Transient Protection  All power & signal cables protected
Environmental Specification
Temperature-40° to 140° F (-40° to 60° C)
Humidity 0-100%
Precipitation / Dust NEMA 4 type protection
Physical Specification
Transmitter Size8.25 x 7.75 x 22 inch (210 x 195 x 560 mm) - H x W x D
Transmitter Weight 18 lbs (8 kg)
Receiver Size 14 x 8.25 x 22 inch (355 x 210 x 560 mm) - H x W x D
Receiver Weight  30 lbs (14 kg)
Enclosure Size  16 x 12 x 10 inch (400 x 300 x 250 mm) - H x W x D
Enclosure Weight  20 lbs (9 kg)
Head & Enclosure Cable Length 15 ft (5 m)