NF600 High accuracy North Finder Gyro static north finder
North Finder(Hereinafter referred to “the product”)is mainly used to fast determine theire own true north,composed of double free revolving DTG(Dynamically Tuned Gyroscope),bi-axial accelerometer sensor,mechanical rotation device and the circuit of output signal processing.
The product is mainly composed of a high-accurate DTG and two accelerometers. With the two basic traits of double free gyro:precession and gyroscopic inertia,
gyro rotation axes relative to the inertia space remains unchanged,but the earth’s rotation around the polar axes with its
own angular velocity is revolving turning to the inertia speace.You can find its rotation axis of the gyro relative to the earth
is revolving if the earth is as the reference.That’s why that gyroscope is able to track and measure the earth’s axis rotation
angular velocity. By gyro sensitive to the different components of angular velocity of the Earth axis rotation on X axis and
Y axis,we can get the orientation information of the product reference axis and then get the tilt data of axes via the two axes
accelerometer sensor. The platform of product is adjustable.The Principle structure is as follows:
Power supply |
+24~+36(customised) |
V |
Working current(rms) |
<1.5 |
mA |
Working mode |
Static |
|
Tilt measuring range |
±8 |
° |
Accuracy of tilt measuring |
±0.06 |
° |
Tilt resolution |
0.01 |
° |
Digital output type |
RS232 |
bit |
Tilt angle digital display |
4 |
bit |
Bearing digital display |
5 |
bit |
Azimuth measuring range |
0~360 |
° |
Accuracy of azimuth measuring |
<0.1 |
° |
Azimuth resolution |
0.01 |
° |
North seeking time |
<3.5 |
min |
Set-up time |
10 |
min |
Net weight |
<8 |
kg |
Working temperature |
-40~+60 |
°C |
Impact |
3g,8~11 |
ms |
Dimension |
For details, see Appendix (customised)
|
mm |
1The flatness of the installation baselevel should be≤0.05mm,fix the product with screws
and make sure they’re in rigid connection.
2)Make sure and conform the product axis to that testing axis of system.