Digital magnetic compass HCM370B

electronic3Dtilt-compensated

Product description
The HCM370B / HCM375B-N is a compact, high-precision 3D electronic compass providing reliable heading data with 0.5° accuracy and 0.1° resolution. It integrates a three-axis magnetic sensor and a three-axis accelerometer for wide-angle tilt compensation and implements hard/soft iron calibration algorithms to maintain accuracy in magnetically disturbed environments. Available as a complete IP67-sealed housing or as a PCBA for system integration, the unit is suited to industrial measurement and navigation tasks where small size, low power and robust performance are required.

Scope of application

• Engineering vehicle leveling
• High-altitude platform safety monitoring
• Shield pipe jacking guidance
• Medical device angle control
• Underground drilling rig attitude/navigation
• Orientation measurement based on inclination
• Geological equipment tilt monitoring
• Mining machinery and oil drilling equipment
• Equipment level control
• Alignment control and bending control

Parameters (selected)

• Model: HCM370B / HCM375B-N
• Heading accuracy: 0.5°
• Heading resolution: 0.1°
• Pitch accuracy (measurement ranges): 0.1° <15°; 0.1° <30°; 0.1° <60°; 0.2° <85°
• Pitch range: ±85°
• Roll accuracy (measurement ranges): 0.1° <15°; 0.1° <30°; 0.1° <60°; 0.2° <180°
• Roll range: ±180°
• Inclination resolution: 0.1°
• Calibration: hard magnetic calibration; soft magnetic calibration
• Magnetic interference calibration method: horizontal 360° rotation; optional vertical rotation
• PCBA size: L76 × W16.5 × H9.3 mm
• PCBA weight: ≤ 10 g (excluding cable)
• PCBA cable: 30 cm terminal wire
• Housing size: L111.5 × W19.5 × H19.5 mm
• Housing weight: ≤ 85 g (excluding cable)
• Housing connector cable: standard 1 m 5-PIN aerial connector cable
• Output interface: RS232 / RS485 / TTL (optional)
• Interface: Start delay <50 ms; Max output rate 20 Hz; Communication rate 2400–115200 baud (default 9600); Output format: Binary high-performance protocol
• Power supply: DC +5V (default)
• Current (max): 15 mA; Typical: 12 mA; Sleep: 3 mA
• Operating temperature: -40℃ to +85℃; Storage temperature: -40℃ to +85℃
• Shock resistance: 100 g
• Protection level: IP67
• Electromagnetic compatibility: compliant with EN61000 and BT17626
• MTBF: ≥ 98,000 hours
• Insulation resistance: ≥ 100 MΩ
• Impact resistance: 100 g @ 11 ms (axial, half-sine)
• Vibration: 10 grms ~ 1000 Hz

Dimensions

• Shell size: L110 × W19.5 × H19.5 mm
• Installation size: L102 × 11.5 × 4 mm
• Mounting screws: 2 × M4

Characteristics / technical specifications

• High-precision 3D digital compass with 0.5° heading accuracy and 0.1° resolution
• Tilt compensation by 3-axis accelerometer; pitch ±85°, roll ±180°
• Supports hard and soft magnetic calibration; optional vertical rotation calibration
• Compact PCBA and IP67 housing options for integration or standalone use
• Multiple output interfaces: RS232 / RS485 / TTL; binary high-performance protocol; up to 20 Hz output
• Low power consumption: typical 12 mA, max 15 mA, sleep 3 mA; default supply DC +5V
• Wide operating temperature range and robust shock/vibration performance for industrial applications