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Accurate Gyro North Finder for Navigation and Orientation Needs

Accurate Gyro North Finder for Navigation and Orientation Needs
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Usage: Position Sensor
North Finding Time: ≤3min
North Finding Accuracy: ≤0.06° ~≤0.5°
Horizontal Accuracy: ≤0.1°
Weight: ≤4.5kg
Power Supply: 24±4V
Interface: RS422
Power-on Preparation Time: 6 Minutes
High Light:

0.06deg orientation north finder


RION orientation north finder


FNF701 north seeking device

Basic Infomation
Place of Origin: Guangdong, China
Brand Name: RION
Model Number: MF309
Payment & Shipping Terms
Packaging Details: 1pcs gyro sensor in each inner box , 100pcs /ctn
Delivery Time: 2-4 weeks
Supply Ability: 1000 Box/Boxes per Month inclinometers are avaliable
Product Description
Detailed Images


 Accurate Gyro North Finder for Navigation and Orientation Needs

1.1 Product Usage

Fiber optic gyroscope (FOG) north finder is mainly used to determine the true north direction rapidly and independently.The angular rate of the earth's rotation is obtained by high precision FOG tracking. The angular rate signal of the earth's rotation is calculated, and the angle between the main axis of the gyro and the true north direction of the earth is calculated to provide azimuth information for the carrier.
1.4 Key features

a) North finding time:≤3min;
c) Horizontal accuracy:≤0.1°
d) Weight:≤4.5kg
e) Power supply :24±4V;
f) Power consumption:25W(Peak value);
g) Interface:RS422;
h) Power-on preparation time 6 minutes;
i) Working mode: Self-check is started after power-up, and after self-check is completed, it is controlled by the upper computer to find the north. After the north-search is completed, the result of north-search is sent to the upper computer.

1.5 Environmental Requirements

1) Working temperature:-40℃~+65℃;
2) Storage temperature:-45℃~+70℃.
3)Sand and Dust: Under the condition of sand and dust stipulated in 2 conditions of GJB150.12, the gyro north finder shall not appear the following situations:
a. Institutions are too tight, stuck or malfunctioning;

4)Salt fog

The gyro north finder should meet the salt fog condition of GJB150.11.
5)Hot and humid environment Conditions
Relative humidity: 95%; temperature: 30±2C; storage time 72 hours.
Insulation resistance should be no less than 2 MΩ_, metal surface should not be rusted, coating should not appear foaming, spalling and other phenomena, and can work normally.
6)vibration environment
Sinusoidal Scanning Vibration Environment Requirements
Frequency range: 5Hz ~ 5.5Hz, vibration displacement (dual amplitude) 25.4mm
Frequency range :5.5Hz~200Hz,vibration acceleration 1.5g;
Scan time :12min;
Vibration direction:3 axises (X axis ,Y axis, Z axis );
Each axis:2h;
7)Impact Environmental Conditions
Shock Waveform: Semi-sinusoidal Pulse
Peak acceleration: 20g, pulse width 11ms,
Shocks times per axis (X axis , Y axis , Z axis ) is 3.
8)Collision Environment Conditions
Peak acceleration: 10g
Pulse width: 16ms
Collision Rate: Vertical Axis 80 times/min
Collisions times: 1000±10
Collision Direction: Vertical Installation Plane
Parameters MF309 MF308 MF307
Main technical parameters North seeking accuracy (1σ) ≤0.1° ≤0.3° ≤0.5°
North seek time ≤ 3min

Horizontal accuracy

(pitch and roll)

≤0.05°(1σ) ≤0.05°(1σ) ≤0.05°(1σ)
Power-on preparation time 6min
interface RS422
Power supply 24±4V
Power consumption 20w (peak)
Weight <3
Dimension L120×W90×H115mm
Working mode After power on, it start self-test. After the self-test completed, it will response to the upper computer’s north seek command. And after north seeking, the north seeking result will be sent to upper computer.
Environment requirements Operating temperature -20 ~ +50℃
Storage temperature -45~ +70℃
Relative humidity 95%
Appearance The metal surface shall not be rusted, and the coating shall not cause blistering or peeling.
Electrical performance Insulation resistance The insulation resistance between the individual circuits of the gyro north finder and its circuit and housing shall be not less than 10 MΩ under standard atmospheric conditions.
maintainability MTBF ≥1000hrs
MTTR ≤30min


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Contact Person : Alice Du
Tel : 86-15625295088
Fax : 86-755-29761269
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