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OMC-150 /158 Intrinsically safe wind sensor

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The OMC-150 comprises of a combined in-line wind speed and direction sensor. The system is robust, corrosion resistive and easy to install. Using a sin/cos potentiometer wind direction is measured without a dead-band, while speed is measured using a proximately switch and a code cap. The unit is made from stainless steel and comes with a mounting arm which can be clamped to a mast using two U-Bolts.

Inside the safe zone the sensor is connected to the OMC- 158 Zener Barrier Box. This consists of an aluminium case containing the interface printed circuit board and three safety barriers. This is the standard Obsermet current loop signal with ASCII information, provided at 300 baud.

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Technical Details

Features:
> High accuracy sensor according W.M.O.
> Meets ATEX directive 94/4/EEG; EN 50014 EN 50020 and EN 13463-1
> Type approved EEx ia IIC T4
> Equipment category II 2 G
> Certificate number KEMA 03ATEX1146
> Permitted in Zone 1 and 2
> High reliability in every environment
> All exposed parts in stainless steel 316
> Plugged connection
> Most cost effective solution for wind measurement in hazardous areas

Specifications:
> Power Requirements: 12..18 VDC, 100mA
> Sensor Output: Potmeter for direction / Pulse signal for speed
> OMC-158 Output: Currentloop ASCII coded output
> Weight: 5 kg
> Mounting: pole with two clamps for max. 62 mm diameter
> Operating temperature -25 to 70 deg. C
> Moisture protection IP65
> Humidity 5 to 90%
> EMC EN 50081-1 class B, EN 50082-2
> Speed Accuracy: 2% FRO
> Speed range 0,3..75 m/s
> Direction Accuracy: ± 2 degrees
> Direction range: 0 to 360 degrees

Use With:
> OMC-156 EEx Junction Box
> OMC-154 Calibration Certificate

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