OMC-116 Full metal Ultrasonic Wind sensor Marine meteorological observations require devices designed to withstand the hardest environmental conditions such as heavy vibrations, sea spray, extremes of temperature, chemical particles etc. Observator has an exceptional track record in the world-wide supply of meteorological sensors to the marine and offshore markets. The OMC-116 is a ultrasonic wind sensor based on the time of flight theory designed specifically for the rigors of the marine markets. The unit offers the industrial standard NMEA0183 output and also offers optional 4..20 mA outputs. The robust design of stainless steel and marine grade aluminum makes this unit ideal for the hardest of environments. Heating is available as standard making the sensor suitable in operating temperatures down to –40°C. The standard mounting bracket with its integrated junction box makes this unit easy to install. Features: High accuracy maintenance free sensor Range 0 - 75 m/s Fitted with an integrated heater (240 Watts, controlled separately) Power supply through display (OMC-138/139) possible Supplied with calibration certificate Easy to install Integrated junction box Standard NMEA0183 output, RS422 (baud rate user selectable) Optional 4..20 mA outputs available OMC-116 Full metal Ultrasonic Wind sensor In applications where heating is not required (and hence disabled), the OMC-116 can be powered directly from an Obsermet display or data logger. In cases where the heater is to be used (advised in cases where temperatures below zero may be expected) an external 24Vdc power supply should be used with a capacity of not less that 250 watts. The unit comes complete with a calibration certificate at no extra cost. Although the unit is maintenance free and does not need re-calibration, it is possible to return the sensor to Observator for a re-calibration if required. WMO compliant The OMC-116, is in compliance with the Operational Measurement Uncertainly Requirements and Instrument Performance Specifications for wind sensors, as defined by the World Meteorological Organization in Doc. No 8, Guide to Meteorological Instruments and Methods of Observation, 7th edition, 2008, Part 1, chapter 1 , Annex 1B. DATA SUMMARY WIND SPEED • principle Ultrasonic • range 0..75 m/s • accuracy ± 0.2 m/s • threshold 0.1 m/ WIND DIRECTION • principle Ultrasonic • range 0..359.9⁰ • accuracy < 2⁰ • threshold 0.1⁰ POWER REQUIREMENTS • Power supply 10 - 30 Vdc • Current, no heating [email protected] 12 Vdc • Current with heating [email protected] 24 Vdc OUTPUTS • NMEA0183 version 2.30 • RS422, baud rate selectable, • Identifier selectable • Optional 4..20 mA outputs (2) DIMENSIONS • Weight 4 kgs • Mounting arm with two U-bolts for pole max 65 dia ENVIRONMENTAL • Operation temperature -20°..+60°C • With heater –40°..+60°C • Moisture protection IP66 • Humidity 10..99% RH Version 012015 The Observator range is in continuous development and so specifications may be subject to change without prior notice GENERAL The OMC-116 Ultrasonic wind speed and direction sensor comes standard with an industrial mounting bracket provided with 2 U-bolts suitable for mast mounting (max 65 mm dia.). An integrated junction box allows easy connection of sensor signal and power supply using standard cabling. The internal heater should be powered separately if used. The sensor can be configured to enable or disable the heater.
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