NKE 9X Compass

The “Compas 9X” nke is a precision sensor comparable to an inertial unit, realizing the fusion of accelerometers, gyrometers and magnetometers data in real time.
It delivers a true orientation in the 3D space: heading, rolling and pitching. Movement and orientation are available at the frequency of 25 Hz (NMEA output).

The miniaturization of the sensor (MEMS components) and its integration in a new generation waterproof housing facilitates its installation on board.

Specifications

Power	9 to 30V DC
Consumption	<500mW
Angular resolution	0,01°
Magnetic heading precision	2° (dynamic)
Roll and Pitch precision	1° (dynamic)
Operating temperature	-10 ° C to +50 ° C
Storage temperature	-20 ° C to +60 ° C
Câble	6 m
Waterproofing	IP67
Poids	200g
Dimensions	H68 x Ø78
Warranty	2 ans
Comes with	bracket, 6m cable
Gyroscopes	±2000°/s
Accelerometers	± 16G
Magnetometer	± 0,8Gauss

Caractéristiques

In racing, integrated with the Topline bus, it improves the accuracy of true wind angle and speed by correcting the wind measurements for the boat’s heel.

When the boat heels, the anemometer sensor reels spin slower. The actual wind is no longer perpendicular, the pressure on the reels decreases, and thus the wind speed is pessimistic. The heel calculation allows to correct the apparent wind speed and therefore all the calculations for the real wind. For example, if the angle of heel is not taken into account, we detect an error of 2.5° on the angle of the real wind at 25° of heel.

Under pilot, the system uses the boat acceleration data to apply a correction on the compass heading

The combination of the 9X Compass with a Gyropilot (gyrometer integrated) enhances the pilot performance. A standard fluxgate compass does not provide the boat’s acceleration data. Therefore, there is a damping for compass heading data in order to get a stable value; otherwise it would not be useable. The integrated gyrometer in the autopilot partly compensates for this but with clean data coming from the 9X Compass, the performance is even better.

sku	90-60-534

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