High Precision 0.3 deg Accuracy FOG North Finder with RS422 Interface and Compact 115 x 90 x 110mm Design

The NF701A High Precision FOG North Finder is an essential instrument for geophysical exploration and oil gas well surveying operations. Its 0.3 deg accuracy fiber optic gyroscope technology provides reliable true north reference independent of magnetic fields, essential for accurate wellbore trajectory measurement and seismic survey orientation in remote exploration sites.

115 x 90 x 110 mm

• North seeking time: ≤ 3 minutes
• North seeking accuracy (1 sigma): ≤ 0.3 deg (NF701A); ≤ 0.5 deg (NF701B)
• Horizontal accuracy: ≤ 0.05 deg (1 sigma)
• Circumference: ≤ 0.5 deg (1 sigma)
• Weight: ≤ 2 kg
• Power supply: DC 12V ~ 24V
• Power consumption: 15 W (peak)
• Interface: RS422
• Working mode: Automatic self-check on power-up, controlled north seeking via upper computer

• Operating temperature: -40°C to +70°C
• Storage temperature: -55°C to +85°C
• Humidity: Relative humidity less than 95%

• MTBF ≥ 1000 hours
• MTTR ≤ 30 minutes

• Oil Well Trajectory Surveying: Accurate azimuth for directional drilling and wellbore placement
• Seismic Survey Orientation: Precise geophone array alignment for 3D seismic acquisition
• Gas Field Exploration: North reference for exploration drilling rig positioning
• Geothermal Well Development: Directional control for geothermal reservoir targeting
• Mineral Exploration Drilling: Azimuth data for core drilling and resource delineation