Low cost SOLID STATE advanced Pitch / Roll / Temperature compensated miniature 3D COMPASS / MAGNETOMETER system is built around a state of the art CMOS microcontroller utilizing AOSI’s proprietary algorithm on a 0.9″ x 2″ x 0.5″ assembled PCB.
The unit outputs continuous heading, magnetic field, dual axis tilt and temperature data over the standard USB, RS-232TTL,RS-232 rider PCB, RS-422 and RS-485* interfaces. The AZIMUTH is generated from a 3 axis semiconductor magnetometer with 12 bit ( 0.08 deg ) resolution. The LINEAR tilt information is available with 12 bit resolution for +-90arcdeg in Pitch and Roll axis +-180 deg. COMPASS/TILT module is perfectly suitable for numerous navigation, antenna orientation, borehole profiling, research, training, construction, entertainment and other precision orientation, and leveling applications.
The COMPASS is able to output multi-sensor information in NMEA-0183 mode and responds to numerous generally used commands. Easy link through the Hyper Terminal Windows accessory facilitates custom calibration, hard iron compensation, data acquisition, data averaging, scan delay, dumping factor and data display.
Compass is also available in a special logging version EZ-COMPASS-4L.
| Parameter | Specification | Units/description |
|---|---|---|
| Azimuth Range | 0–360 | deg, continuous |
| Azimuth Resolution | 12 (0.08) | bit (deg) |
| Azimuth Repeatability | < 0.25 | deg, typical horizontal |
| Azimuth Accuracy | < 0.5 | deg, typical horizontal,calibrated |
| Magnetic Field | +-2 | Gauss typical |
| Magnetic Resolution | < 1 | mGauss typical |
| Pitch Range | +90 to -90 | arcdeg after linear correction |
| Roll Range | +180 to -180 | arcdeg after linear correction |
| Weight | 7 | grams |
| Dynamic Range | 10 | reading/sec |
| Tilt Resolution | 12 | bit full scale, both axis |
| Tilt Repeatability | <2 | bits |
| Temperature | -40 to +85 | deg C |
| Communication | 1200–115,200 baud,8,N,1 | RS-232 and RS-422 standards |
| Supply | 8—15 | Vdc |
| Size | 0.9″W x 2″L x 0.5″H | PCB Board |
| NMEA-0183 mode | 6 select modes | 1999 Revision |
* RS-232 or RS-485 are activated upon special request Manual located in a LIBRARY section.
SOFT NORTH: North direction could be manually reset by software to compensate for local declination angle
CABLE: Special cable for PC interfacing is available. Unit should be locally calibrated.
AILERON MODE
EZ-COMPASS-4 operates in a special ( Aileron Roll mode ). Just like a rolling jet flying forward rolling around its longitudinal axis, the compass, while at any roll orientation inside the borehole, still outputs accurate borehole direction. Accurate direction is maintained at borehole inclinations of -75 to +75 degrees. This advanced feature sets the EZ-COMPASS-4 apart from other magnetic compasses.
Specifications & versions of sensors and software may change without notice.
