Low Cost 3D Digital Compass

ER-EC37B(0.3°~0.5°) Features:
Azimuth accuracy: 0.3°~0.5°
Inclination measurement range: ±180°
Inclination resolution: 0.1°

Product Details

Low Cost 3D Digital Compass


ER-EC37B Low Cost 3D Digital Compass is a high accuracy 3D digital compass of strip shape, its length isonly 1.6cm, IP67 protection grade, suitable for many harsh environment such as drillingmeasurement. It adopts advanced hard iron and soft iron calibration algorithm, it can providethe high-precision heading value output when both pitch and roll angle at any angle within 360.it is small and low power consumption, suitable for current miniaturization sensitivemeasurement system. Sealed complete item and signal board are available.

ER-EC37Bintegrated patented three-axis flux-gate technology. It calculatesheading value in real-time by CUP, and perform heading value compensation in wide tilt rangeby using three-axis accelerometer. It is high performance and excellent stability militarily levelcompass sensor. Its volume is small, power consumption is low. It could widely used in manyapplication such as antenna installation, vehicle and integrated system, and so on.


Azimuth accuracy: 0.3°~0.5°

Inclination measurement range: ±180°

Inclination resolution: 0.1°

Inclination accuracy: <0.2° (full scale)

Wide temperature range: -40°C~+85°C

Size: L110×W19.5×H19.5mm

With hard magnetic, soft magnetic and tilt compensationoutput interface

Standard RS232/RS485/TTL


Satellite antenna search star

Artillery launch system

ROV underwater robot navigation

Navigation navigation mapping

GPS integrated navigation

Antenna servo control

Infrared imager Laser rangefinder

Map filler

Oceanology tester

Special occasion robot

Unmanned aerial vehicl


ER-EC37B performance parameter indicator

Compass heading parameter

Optimum heading accuracy

0.5° oblique<10°

2.0° oblique>60°



Compass inclination parameter

Pitch accuracy

0.1°<15°(Measuring range)

0.1°<30°(Measuring range)

0.1°<60°(Measuring range)

0.2°<90°(Measuring range)

Pitch oblique range


Roll accuracy

0.1°<15°(Measuring range)

0.1°<30°(Measuring range)

0.1°<60°(Measuring range)

0.2°<90°(Measuring range)

Roll oblique range




Physical characteristics

Hard iron calibration


Soft iron calibration


Magnetic field interference calibration method

Rotate 360 degrees horizontally; vertical rotation (optional)




20 g

RS-232/RS485/TTL interface connector

5PIN connection terminal

Interface characteristics

Start delay

<50 ms

Maximum output rate


Communication rate

2400~ 19200baud

Output format

Binary high performance protocol

Power supply

Supply voltage

(default) DC +5V

Current (maximum)


Ideal mode


Sleep mode



Operating range


Storage temperature


Anti-vibration performance


Protective performance


Electromagnetic compatibility

According to EN61000 and GBT17626

Mean time between failures

≥40000 hours/time

Insulation resistance

≥100 MΩ

Impact resistance

100g@11ms, three axes and the same (half sine wave)

Vibration resistant



80g (without cable)


1. What is your quotation condition?

If you have DHL or Fedex account ,we can quote EXW price ,otherwise CIF or FOB price.

2.Do you have any discount when procurement? 

We will quote sample price at first and we will quote volume price if you need more quantity.

3.How long is the delivery time?

For sensors,parts,modules : in stock-one week;no stock-2-4weeks; For systems,generally ,8-12 weeks.

4.How to deal with the quality problems?

If confirmation of product quality problem we can replace it freely for customer in the shortest period.

If interested in Low Cost 3D Digital Compass, pls contact us : info@ericcointernational.com

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