Electronis Compass (LT-500 AHRS)

LT-500 AHRS

The LT-500 Attitude Heading Reference System (AHRS) unit is a maritime navigation electronic compass / heading sensor from Lars Thrane A/S. The LT-500 AHRS unit is designed for the leisure as well as the professional maritime markets. The LT-500 unit meets all standards and certification requirements needed for worldwide maritime navigation equipment.

PERFORMANCE

The LT-500 AHRS unit is a small, compact, and very advanced unit with 11 precision sensors. With the use of sensor-fusion and Kalman filtering, the LT-500 AHRS unit outputs: true heading1, roll, pitch, air pressure, and temperature real-time, with high precision and resolution. The LT-500 AHRS unit includes advanced technologies such as :

Kalman filtering.
Calculation of magnetic variation based on the World Magnetic Model (WMM).
Compensation of soft and hard iron (deviation).
Built-in magnetometer calibration algorithm.

The LT-500 AHRS unit is designed and built for the demanding and rough environment at sea and with an operational temperature range from -25⁰C to +55⁰C (-13⁰F to +131⁰F).

INSTALLATION & NAVIGATION

The LT-500 AHRS unit is easy to mount and supports NMEA 0183, NMEA 2000, and power on a single cable. Without compromising the high performance, the LT-500 AHRS unit may be installed in any position. The LT-500 AHRS units has a built-in user interface (display and control buttons) for installation and service. Navigation output from the LT-500 AHRS unit is available in the user interface. The LT-500 AHRS unit supports automatic levelling (pitch and roll), which can be used during the installation. The built-in magnetometer calibration algorithm will compensate for deviation, and the LT-500 AHRS unit will output reliable navigation data. The external PC installation and service software is available for optional configuration and maintenance of the LT-500 AHRS unit.

More than 40 years of experience have been put into the design and construction of the advanced LT-500 AHRS unit, with an exceptional performance and specification level.

Key Features :

Attitude Heading Reference System with 11 precision sensors.
True heading, magnetic heading, deviation, variation, roll, pitch, air pressure, and temperature.
Display and control buttons for installation and service.
Simultaneously NMEA 0183 and NMEA 2000 data.
Configurable NMEA 0183 sentences (enable/disable, talker ID, output rate).
Easy configurable NMEA 2000 termination resistor (open or terminated).
Easy configurable NMEA 0183 data rate (4800 or 38400 baud).
Mount in any orientation without compromising the high performance.
Each unit is factory calibrated and functional tested over temperature prior to shipment.
Worldwide maritime certification.
LT 500 AHRS Heading Sensor

Specifications :

Certification & standards: CE, IEC 60945, IEC 60950, FCC, IC, RCM, RoHS, NMEA 0183, NMEA 2000.
Dimensions: 91.6 x 75.3 x 32.7 mm (3.61 x 2.96 x 1.29 in).
Weight: 104 g (0.23 lbs).
Temperature (ambient), operational: -25°C to +55°C (-13°F to +131°F).
Temperature (ambient), storage: -30°C to +80°C (-22°F to +176°F).
Waterproof: IP42 / Humidity: 95% non-condensing @ 40°C.
Communication Interface: 8-pin female connector for NMEA 0183, NMEA 2000 and power.
Input power: 9-40 VDC.
Power consumption: < 1W.
Load Equivalent Number (LEN) : 2.
Compass safe distance: 0.3 m (1 ft).