2525 Brunswick Ave, Suite 205
Linden,  NJ  07036,  USA
Tel:   908-474-9595
Fax: 908-474-9090

Compasses, Solid State Inclinometers, Directional Probes, Electrolytic Tilt Sensors


submersible miniature version

ezdivemini.jpgHigh reliability submersible advanced pitch/roll compensated COMPASS / MAGNETOMETER system is built around a state of the art CMOS microcontroller utilizing AOSI’s proprietary algorithm on a 0.9″ x 2″ assembled PCB with a total height including tilt sensing elements of less then an inch.

Packaged in a marine grade black anodized cylindrical aluminum housing the unit outputs continuous heading, field, dual axis tilt and temperature data over the standard RS-232 or RS-422 or RS-485 interface at depth up to 3500 meters. 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 up to +-180arcdeg in roll and +-90 deg in pitch.

COMPASS/TILT module is perfectly suitable for numerous underwater navigation, research, training, construction, entertainment and other precision orientation, navigation and leveling applications. Bottom exterior surface is calibrated for accurate zero level

The COMPASS is able to output heading information in NMEA-0183 and local LCD modes. Easy link via Hyper Terminal Windows accessory facilitates custom calibration, hard/soft iron compensation, data acquisition, data averaging, and data display. EZ-COMPASS-4-DIVE-M is supplied with a mating connector molded to 4 feet cable. Custom cable length are available and are quoted upon request. Compass can be supplied in a Logging version EZ-COMPASS-4L-DIVE-M.  Manualcan be downloaded from the LIBRARY section.




Azimuth Range 0–360 deg, continuous
Azimuth Resolution 12 (0.08) bit (deg)
Azimuth Repeatability < 0.25 deg, typical
Azimuth Accuracy < 1 deg, typical
Magnetic Field +-2 Gauss typical
Magnetic Resolution < 1 mGauss typical
Pitch Range +90 to -90 arcdeg linear
Roll Range +180 to -180 arcdeg linear
Pitch Range +90 to -90 arcdeg near-linear
Roll Range +180 to -180 arcdeg near-linear
Tilt Resolution 12 bit full scale, both axis
Tilt Repeatability <2; bits
Operational depth 3500 meters
Temperature -40 to +80 deg C
Storage Temp. -50 to +95 deg C
Communication 300–114K baud,8,N,1 RS-232 standard
Supply 8 to 24 (custom) Vdc, 12Vdc typical
Size 1.8″ diam x 4.5″ high outside dim
NMEA-0183 mode 5 sentences must use CR LF

SOFT NORTH: North direction could be manually reset by software to compensate for local declination angle

Specifications of sensors may change without notice.