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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

Nome da marca: Firepower
Número do modelo: NF701A
Informações pormenorizadas
Lugar de origem:
China
Certificação:
ISO 9001:2015, CE, RoHS
Precisão de localização do norte:
<= 0,3 graus (NF701A)
Dimensão do localizador do norte:
115x90x110mm
Saída:
RS422
Precisão Horizontal (1 sigma):
<= 0,05 graus
Definição do azimute:
<= 0,5 graus
Peso:
<= 2kg
Destacar:

fiber optic gyro north finder

,

mining tunnel boring directional survey

,

0.3 deg accuracy NF701A seeker

Descrição do produto
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