Tilt Sensors & Inclinometers

ECG – eCompass Series

ECG – eCompass Series

If your compass application involves vibration, acceleration, uneven terrain, or rough seas, the ECG Series, a gyro-stabilized electronic compass, is an uncompromising solution that will outperform rival units that cost more. The ECG provides remarkably accurate heading, pitch, and roll in dynamic conditions. It all starts with a precision 3-axis solid-state magnetometer. Two angular rate gyros independently stabilize pitch and roll. They augment a dual-axis, electrolytic tilt sensor that provides precise tilt measurements in static environments. Two sets of independent filters, one set for pitch and one for roll, combine gyro and electrolytic sensor measurements to provide the best available tilt measurements.


  • Exceptional Dynamic Performance
  • High Static Accuracy
  • RS-232 & RS-485 Outputs Available
  • Precise Calibration
  • Single Supply Operation
  • Plastic or Aluminum Enclosure Options



  • Robotics
  • Platform Stabilization
  • Excavation Machinery
  • Irrigation Equipment


Performance Specifications

Heading Performance

Accuracy (rms)1 ±0.5°
Static, Tilt <35° Dip <60°
Dynamic, rate <250°/sec
Repeatability ±0.3° Static, no filter
Response Time (msec) 36 Minimum, no filter
Dip Angle Range ±80°
Tilt Range ±40°
Update Rate (measurements per second) 28


Pitch and Roll Performance

Accuracy ±0.3° Factory calibrated
Repeatability ±0.2° No filter
Range ±42°
Settling Time (sec) 0.5 Gyros enabled



Supply Voltage (VDD) 6 – 45Vdc unregulated
5.0Vdc regulated
4.9Vdc minimum
Supply Current Operating: 30mA
Sample: 10mA
Standby: 2mA



Operating Temperature -40° to 105°C
Storage Temperature -50° to 150°C
Humidity 0-90%



Enclosure Material (ABS) Flame Retardant Plastic UL94 VO or
Diecast Aluminum Alloy (Type 360.1)
PCB Size 1.8″W x 3.0″L x 0.6″H
PCB Mounting 4 #4 screws
Weight Plastic: 3.2oz (90.7g)
Aluminum: 7.2oz (204.1g)
Connectors 8 pin, single-row, 0.1? friction header
6 pin RJ12 modular jack



Signal Type RS-232 and RS-485
Baud Rate (bps) 2400, 4800, 9600, 19200, 38400, or 57600
Character Format 8 data, no parity, 1 stop
Input Buffer Size 110 characters
Output Buffer Size 110 characters
Output Format NMEA 0183 and binary
Output Data Rate 1 to 1650 sentences per minute
Operating Modes Continuous or sample
Angle Units Degrees, mils, radians, 16-bit integer


1: May require calibration after installation to eliminate the effect of local magnetic field
*Specifications subject to change without notice on account of continued product development