Tilt Sensors & Inclinometers

ECV – eCompass Series

ECV – eCompass Series

The ECV eCompass Series is a 3D electronic compass providing stable azimuth, pitch, and roll measurements in dynamic conditions. As an enhanced version of our ECG Series, the ECV includes a full suite of precision, 3-axis, MEMS sensors, and an optional dual-axis electrolytic tilt sensor, for the ultimate in near-level accuracy. A high-performance microcontroller orchestrates the fast measurement sequence, sensor calibration adjustments, frame-of-reference translations, trigonometric calculations, and advanced signal processing required to provide accurate heading, pitch, and roll outputs.


  • Exceptional dynamic performance
  • High accuracy
  • Precise factory calibration
  • Wide operating temperature range
  • RS232 & RS485 output available
  • Plastic or Aluminum enclosure options
  • Fast response
  • Low power
  • Two independent serial channels
  • In-System Configuration & Test



  • Unmanned vehicles
  • Robotics
  • Platform stabilization
  • Excavation machinery



The advanced capabilities of the ECV are supported by updated eCompass PC software that simplifies engineering verification and integration tasks.

The software provides the following functionality:

  • Monitor and change compass settings
  • Perform magnetic calibration
  • Capture selected measurement data
  • Maintain communication and setting logs


Performance Specifications

Heading Performance

Accuracy (rms)1 ±0.5°
Static, Tilt <35° Dip <60°
Dynamic, rate <150°/sec
Repeatability ±0.3° Static, no filter
Response Time (msec) 36 Minimum, no filter
Dip Angle Range ±80°
Tilt Range ±90° Pitch/±180° Roll
Update Rate (measurements per second) 27.5


Pitch & Roll Performance

Accuracy ±0.3° Factory calibrate
Repeatability ±0.2° No filter
Range ±90° Pitch/±180° Roll (±42°) electrolytic tilt only
Settling Time (msec) 50 Gyro enabled



Supply Voltage (VDD) 7-45Vdc unregulated
Supply Current (mA) Operating: 40
Idle: 10
Standby: 0.5



Operating Temperature -40° to 105 °C -20°C with electrolytic tilt
Storage Temperature -50° to 150°C
Humidity 0-90% Non-condensing
Shock (g) 200 Maximum horizontal (with electrolytic tilt)



Enclosure Material (ABS) Flame Retardant Plastic UL94 VO
Diecast Aluminum Alloy (Type 360.1)
PCB Mounting 4 #4 screws
Connectors 8 pin, single-row, friction header
6 pin RJ12 modular jack



Signal Type RS-232 and RS-485
Baud Rate (bps) 2400, 4800, 9600, 19200, or 38400
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 fields

*Specifications subject to change without notice on account of continued product development