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SDI RMYoung Wind Monitor (SDI-WS-RMY)

Dual wind speed and direction sensor for hydromet stations by FTS.

The Digital Advantage


The FTS SDI-RMY wind speed and direction sensor is the RM Young 05103 wind monitor with the addition of an SDI-12 interface. The SDI-12 interface avoids the complexity of measuring the AC wind speed signal or the potentiometer output. Wind speed and wind direction are returned in engineering units when requested by SDI command.

  • SDI output offers several advantages over analog wind sensors:
  • allows longer cable runs (up to 1,000ft./305m)
  • permits multiple sensors per datalogger
  • allows datalogger to acquire sensor serial number automatically
  • intuitive diagnostics, less training required, simpler operation

Additional measurements are provided by the SDI-12 interface including peaks, averages, wind direction capture at peak. Units can be user selected to be km/h, mph, knots or m/s. Vector or scalar averaging algorithms are supported with integration intervals adjustable from .25 to 6000 seconds.

Because the sensor uses the SDI-12 protocol, multiple wind sensors can be connected to the same data logger. This can be useful if sensors at various elevations on a tower are required. SDI-12 is a universal standard, so the sensor is fully compatible with all SDI-enabled dataloggers.

Extremely Rugged


The wind speed sensor is a four blade helicoid propeller. The wind direction sensor is a rugged yet lightweight vane. Vane angle is sensed by a precision potentiometer. Constructed of UV stabilized plastic with stainless steel and anodized aluminum fittings, the sensor mounts on standard 1 inch pipe.

Options


Available in three standard cable configurations:
  • 35’ (10.67m) armored cable with waterproof, positive- locking Bayonet connector
  • 50’ (15.24m) standard cable with waterproof, positive- locking Bayonet connector
  • 50’ (15.24m) standard cable with bare leads