SCA3400-D01 manufactured by Murata, an industrial-grade high-precision 3-axis MEMS accelerometer.

Murata original industrial-grade high-precision 3-axis MEMS accelerometer. It adopts capacitive 3D-MEMS technology, featuring ultra-low zero-point drift, long-term stability and low noise. This pure accelerometer chip comes without gyroscope, with SPI digital output and 12-pin SMD package. It is specially developed for outdoor deployment, long-term unattended operation and harsh industrial environments. Its biggest advantage is that zero-point recalibration is rarely required throughout the full product lifecycle.

II. Key Specifications

1. Measurement Range & Filtering (Two software-selectable operating modes)

Mode 1 (High-precision tilt measurement): ±1.2 g, integrated 10 Hz low-pass filter, suitable for static inclination and leveling monitoring

Mode 2 (Vibration acquisition): ±2.4 g, integrated 80 Hz low-pass filter, suitable for dynamic equipment vibration detection

Resolution: up to 15,000 LSB/g, enabling accurate capture of tiny deformations.

2. Stability (Core Selling Points)

Full-lifetime zero drift: typical ≤0.5 mg for X/Y axes, ≤2 mg for Z axis

Thermal zero drift: ≤2 mg for X/Y axes, ≤3 mg for Z axis

Noise density as low as 20 µg/√Hz, top-tier performance among equivalent industry products.

III. Applications (Focus on high-precision industrial scenarios)

1. Structural Health Monitoring (SHM, primary application)

Long-term online monitoring of deformation and inclination of bridges, buildings, steel towers, wind turbine towers and dams; monitoring of geological landslides and foundation pit displacement. Capable of year-round unattended outdoor operation.

2. Precision Leveling & Inclination Measurement

Levels for construction machinery, surveying instruments, laser levels, automatic platform leveling for cranes, attitude calibration of antenna gimbals.

3. Vibration Monitoring for Industrial Equipment

Online vibration diagnosis for CNC machine tools, fans, air compressors and large motors to predict equipment failures.

4. High-Precision Inertial Measurement Units (IMU)

Combined with gyroscopes to form industrial inertial navigation systems for construction machinery positioning, AGV navigation and survey positioning systems.

5. Construction & Survey Instruments

Inclinometers for engineering use, foundation settlement monitoring equipment, tunnel deformation detectors.