CSI AC115-M12D Triaxial Accelerometer

Technical Overview

The AC115-M12D is a high-efficiency, cost-effective triaxial accelerometer engineered by CTC for comprehensive industrial vibration monitoring. Designed to capture simultaneous data across the X, Y, and Z axes, this sensor eliminates the need for multiple single-axis probes, significantly reducing data collection time and cabling complexity. Its integrated three-dimensional sensing capability is essential for identifying complex mechanical faults such as structural looseness, misalignment, and advanced bearing wear.

Encased in a hermetically welded 316L stainless steel housing, the AC115-M12D is built to survive in extreme industrial environments. With an IP68 protection rating, it is completely dust-tight and submersible, making it suitable for applications in cooling towers, pulp and paper mills, and wastewater treatment facilities.

Detailed Technical Specifications

• Measurement Axis: Simultaneous Triaxial (X, Y, Z).

• Sensitivity: 100 mV/g (±15% tolerance).

• Frequency Response: Broadband range from 1 Hz to 6.5 kHz (±3 dB).

• Dynamic Range: Rated for ±50 g peak acceleration.

• Spectral Noise Density:

• 27 μg/√Hz @ 10 Hz

• 6.5 μg/√Hz @ 100 Hz

• 2.5 μg/√Hz @ 1000 Hz

• Electrical Characteristics:

• Excitation Voltage: 18–30 VDC.

• Constant Current: 2–10 mA excitation required.

• Settling Time: Rapid stabilization in under 2.5 seconds.

• Bias Output: 10–14 VDC.

• Case Isolation: >10⁸ ohm (prevents ground loops).

• Environmental & Mechanical:

• Temperature Range: -50°C to +121°C (-58°F to +250°F).

• Shock Limit: 5,000 g peak.

• Sealing: Hermetically welded 316L Stainless Steel.

• Connector: Industrial 4-pin M12 interface.

• Mounting: 1/4-28 threaded mounting hole.

• Protection Rating: IP68 (Waterproof/Dustproof).

Application and Installation

The AC115-M12D is the preferred choice for predictive maintenance (PdM) teams looking to modernize their route-based or permanent monitoring systems. The M12 connector interface provides a secure, vibration-resistant connection that is widely compatible with modern industrial cabling standards. Its wide frequency response and low noise floor ensure high-fidelity data across both low-speed and high-speed rotating machinery, from heavy-duty gearboxes to high-velocity fans.