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Product Category: | North-seeking instrument |
Brand Name: | SSME |
Country of Origin: | China |
Model Number: | NFS-A |
Function: | Search for the true north direction value |
Application: | Mainly engaged in inertial navigation instruments and meters, and satellite navigation systems |
Printing | Customized Printing, OEM services |

The SSME NFS-A North-seeking Instrument is a high-precision inertial measurement device based on gyroscopic principles, designed to accurately determine the true north direction of a specific location. Unlike traditional compasses, it requires no external references (such as geomagnetic signals or satellite signals) during operation, making it ideal for harsh and complex environments. It is widely used in marine, aerospace, and industrial fields, providing reliable direction references for critical equipment and projects.
• Rapid north-seeking: Completes true north positioning in just 3 minutes, improving work efficiency.
• Strong anti-interference: Unaffected by weather, day-night cycles, geomagnetic fields, or visibility, ensuring stable performance.
• Wide application range: Suitable for high-demand scenarios like ship navigation, weaponry alignment, and high-speed rail track calibration.
The instrument boasts an azimuth measurement accuracy of 0.05° (1σ) and a resolution of 0.01°, enabling ultra-fine direction detection. It also supports dual-axis inclination measurement (accuracy ≤0.1°, 1σ) with a ±10° measurement range, effectively calibrating attitude angles and ensuring data accuracy even on tilted surfaces (e.g., ship decks in rough seas).
• Operating temperature ranges from -40℃ to 60℃, and storage temperature from -50℃ to 70℃, adapting to extreme cold or hot conditions.
• Fully sealed packaging (IP rating-compliant) provides waterproof, moisture-proof, and dust-proof protection, suitable for marine and outdoor harsh environments.
• Wide voltage supply (18-36VDC) and low power consumption (≤20W), compatible with various power systems on ships and industrial equipment.
On ships or unmanned vessels, the NFS-A replaces traditional geomagnetic compasses that are easily disturbed by metal structures. It provides real-time true north data for helm control and route planning, ensuring safe navigation even in areas with strong magnetic interference (e.g., near steel docks or military ships).
In aerospace launch sites or military weaponry systems (e.g., missile launchers, radar antennas), the instrument quickly aligns equipment with true north, reducing preparation time and improving mission success rates. Its high stability (good linearity and longitude-latitude compensation) ensures long-term accuracy during equipment operation.
Parameter | Value |
Azimuth Measurement Range | 0° to 360° |
Azimuth Accuracy | 0.05° (1σ) |
North-seeking Time | 3 minutes |
Communication Interface | RS-422 (115,200 BPS) |
Working Mode | Static |
Power Consumption | ≤20W |
• Dimensions: 230×200×190mm (compact design, easy to install in limited spaces like ship control rooms).
• Weight: <6.5kg (lightweight, reducing load on equipment platforms).
• Material: High-strength alloy casing, resistant to impact and corrosion from salt spray.
Offers OEM and customized printing services (e.g., branding logos or operation labels) to meet specific needs of shipyards or industrial clients.
• Provides free calibration services within 1 year of purchase, ensuring long-term measurement accuracy.
• Offers 24/7 technical consulting via email or phone, resolving issues like installation errors or data deviations promptly.
• Supplies replacement parts (e.g., communication modules, sensors) with a 3-month warranty.
