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High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
Specifications
North Finder Dimension :
115 x 90 x 110mm
Place of Origin :
China
Weight :
<= 2 kg
Certification :
ISO 9001:2015, CE, RoHS
Output :
RS422
Azimuth Resolution :
<= 0.5 deg
Horizontal Accuracy (1 sigma) :
<= 0.05 deg
North Finding Accuracy :
<= 0.3 deg (NF701A)
Model Number :
NF701A
Brand Name :
Firepower
Description
High Precision Gyrocompass North Finder System for True North Detection and Direction Measurement
The NF701A Fiber Optic Gyro North Finder is a rugged directional survey instrument for underground mining and tunnel boring operations. Its FOG-based north seeking technology provides reliable azimuth data in magnetically noisy underground environments where conventional compasses fail, operating flawlessly from -40 to +70 deg C.
Dimensions

115 x 90 x 110 mm

Technical Specifications
  • 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
Environmental Requirements
  • Operating temperature: -40°C to +70°C
  • Storage temperature: -55°C to +85°C
  • Humidity: Relative humidity less than 95%
Reliability
  • MTBF ≥ 1000 hours
  • MTTR ≤ 30 minutes
Ideal Applications
  • Tunnel Boring Machine Guidance: Precise heading for TBM navigation in long-distance tunnel projects
  • Underground Mine Surveying: Magnetic-free north reference for drift and shaft alignment
  • Coal Mine Development: Reliable azimuth data for ventilation shaft and gallery planning
  • Subway Construction: Accurate directional control for urban metro tunnel boring
  • Hydroelectric Tunnel Projects: North reference for water diversion and penstock tunnel construction
External Plug Configuration (Interface Y50EX-0607TX2)
Plug Pin Number Functional Definition
a DC12V ~24V
b DC12V ~24V GND
c TD+
d TD-
e RD+
f RD-
g GND
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High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining

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Product Detail
North Finder Dimension :
115 x 90 x 110mm
Place of Origin :
China
Weight :
<= 2 kg
Certification :
ISO 9001:2015, CE, RoHS
Output :
RS422
Azimuth Resolution :
<= 0.5 deg
Contact Supplier
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining
High Precision 0.3 deg Accuracy Gyrocompass North Finder with RS422 Interface for Underground Mining

Shenzhen Fire Power Control Technology Co., LTD

Verified Supplier
5 Years
guangdong, shenzhen
Since 2001
Business Type :
Manufacturer, Exporter, Trading Company, Seller
Main Products :
Accelerometer Gyro Sensor, IMU Accelerometer Gyro, Quartz Flexure Accelerometer
Total Annual :
10000000-15000000
Employee Number :
60~100
Certification Level :
Verified Supplier
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