Alpha Marine Systems Alpha 3000 설치 및 운영 매뉴얼 - 페이지 13

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SECTION 3.3 COMPASS INSTALLATION

The installation of the pilot compass shares many things with the installation of any

compass, except

that visibility and access are of minimal importance. For optimum steering precision and

heading

accuracy, the compass should be mounted away from magnetic objects such as engines or

current

carrying wires, both of which can produce local magnetic fields.

The optimum compass placement is at the common intersection of the Roll, Pitch

and Yaw axes of

the vessel. This means the compass is located amid-ships, over the keel and at

approximately water

line level. This location is not always possible but should serve as a guide to good

placement. The vessel extremes, Bow and Stern, should always be avoided.

The basic compass consists of two units; the sensor and the electronics.

INSTALLATION

Lay out all components as required by the vessel design.

2. Locate all components with particular attention to the Sensor. This unit must be

mounted with the connector uppermost and the canister mounted vertically. It is

internally gimbaled to 45 degrees in roll and pitch and is the only magnetically

sensitive component.

3. The sensor mounting bracket may be mounted using either SST screws or bolts. In

either case they must be non-magnetic.

4. The Sensor is next mounted in the bracket with the heading

Bow (The exact direction of vessel travel).

DO NOT Use force on, or twist the black compass case to position compass as this may

damage internal seals and cause the Compass to leak.

The Compass Electronics case must NOT be drilled for mounting as this may cause

internal damage.

5. Mount the Compass Electronics on a bulkhead in a locker using the angle brackets on

the front and rear.

**CAUTION**

reference toward the