Digital magnetic compass HCM380B

electronic3Dtilt-compensated

Product summary
HCM380B / HCM385B-MP is a cost-effective 3D electronic compass combining a three-axis magnetometer and a three-axis accelerometer. It implements a 24-point magnetic calibration method and high-precision accelerometer-based tilt compensation to deliver precise heading information across roll ±180°. Available as a sealed housing or PCBA module, the unit offers high resolution, stable output, compact size and low power consumption.

Main features / Quick specs

• Measure range: Roll ±180°, Pitch ±85°, Azimuth 0–360°
• Azimuth (heading) accuracy: 0.5°
• Heading resolution: 0.1°
• Output interfaces: RS232, RS485, TTL (direct lead cable)
• Power supply: DC +5V
• Operating temperature: -40℃ to +85℃
• Hardware and software magnetic and inclination compensation
• Housing: L57 × W49 × H25.5 mm; PCBA: L27 × W33 × H9.5 mm

Scope of application

• Mining machinery and oil drilling equipment
• Level control of equipment
• Alignment and bending control
• Engineering vehicle levelling
• High‑altitude platform safety protection
• Shield pipe jacking operations
• Angle control in medical devices
• Underground drilling rig attitude/navigation
• Orientation measurement based on inclination
• Geological equipment tilt monitoring

Dimensions & mechanical

• Housing size: L57 × W49 × H25.5 mm
• Installation size: L45 × W39 × H5 mm
• Mounting: 4 × M4 screws
• Weight: 130 g (excluding cable)

Technical specifications

• Model designation: HCM380B / HCM385B
• Heading — Best heading accuracy: 0.5°
• Heading resolution: 0.1°
• Tilt — Pitch accuracy: 0.1° for <15° / 0.1° for <30° / 0.1° for <60° / 0.2° for <85° (measure range)
• Pitch range: ±85°
• Roll accuracy: 0.1° for <15° / 0.1° for <30° / 0.1° for <60° / 0.2° for <180° (measure range)
• Roll range: ±180°
• Tilt resolution: 0.1°
• Calibration: Hard magnetic calibration — Available; Soft magnetic calibration — Available
• Magnetic interference calibration method: 24 calibration points
• Physical dimension: L57 × W49 × H25.5 mm
• Weight: 130 g (not include cable)
• Interfaces: RS232 / RS485 / TTL (direct lead cable)
• Interface features: Start delay <50 ms; Max output rate 20 Hz/s; Communication rate 2400–115200 baud; Output format: Binary High Performance Protocol
• Power: Supply DC +5V; Current (Max) 30 mA; Typical current 26 mA; Sleep mode: TBD
• Environment: Operating temperature -40℃ to +85℃; Storage temperature -40℃ to +85℃
• Shock resistance: 100 g
• Protection: IP67
• Electromagnetic compatibility: According to EN61000 and GBT17626
• MTBF: ≥ 98,000 hours
• Insulation resistance: ≥ 100 MΩ
• Impact: 100 g @ 11 ms, axial direction (half sinusoid)
• Vibration: 10 grms, 10–1000 Hz