CX-65 Small Boat Magnetic Compass

CX-65 Small Boat Magnetic Compass

The Scope of Application:

Type CX-65 small boat magnetic compass is a good liquid magnetic compass. It is suitable for yachts, lifesaving boats, enclosed boats indicating course heading or distinguishing azimuth.

Product Characteristic:

The product has the advantages of simple structure, convenient using, accurate direction, high sensitivity legible dial etc.

Adopt Standard: 

ISO 14227-2001standard

Product Specification:

Project	Data	Data
Item no	CX-65	CX-65A
Dial diameter	Φ65mm, magnifies Φ 85mm	Φ65mm, magnifies Φ 85mm
Dial graduation	0° - 360 ° , 5° for each gird	0° - 360 ° , 5° for each gird
using temperature	-20°c  to 60 °c	-20°c  to 60 °c
indicating deviation (H=35µT,T=20±3 °c )	≤1.5°	≤1.5°
half period (H=35µT,T=20±3 °c )	≥3 S	≥3 S
Friction deviation (H=35µT,T=20±3 °c )	≤1 °	≤1 °
main semicircle self-heterodyne correcting energy	0° - 30° (matching)
light power supply	DC 24V(12V)	DC 24V(12V)
outline dimension	135×135 × 135mm	130 × 130 × 150mm
diameter of mounting holes	pitch row 124 aperture Φ6	pitch row 115 aperture
weight	1KG	0.8KG

Factors affect the accuracy of a marine magnetic compass:

Deviation: This is the difference between the direction indicated by the compass and the true magnetic north due to local magnetic fields on the vessel. Deviation can be caused by the magnetic field generated by the vessel's steel hull, nearby equipment, and other factors.

Variation: This is the difference between magnetic north and true north, which varies depending on the geographic location of the vessel. Variation must be corrected for to obtain true north readings.

Magnetic dip: This is the tendency of the compass needle to dip downward near the Earth's magnetic poles, which can cause errors in readings.

Oscillation: This is the tendency of the compass card to swing back and forth in rough seas, which can make it difficult to obtain accurate readings.

To compensate for these factors and maintain the accuracy of the compass, mariners can use various methods, including:

Compass correction: This involves adjusting the compass to compensate for deviation and variation. Correctors, such as magnets or weights, can be used to adjust the compass to minimize deviation, while variation can be corrected by applying an appropriate correction angle.

Damping: Damping fluid is used to reduce the oscillation of the compass card, making it easier to obtain accurate readings.

Maintenance: Regular maintenance, including cleaning the compass and checking for proper alignment and calibration, can help ensure accuracy over time.

Proper placement: The compass should be mounted in a location that minimizes the effects of local magnetic fields, such as near equipment or the vessel's steel hull.

Photo of CX-65 Small Boat Magnetic Compass: