B02Y77

The B02Y77 is a waterproof three-axis IEPE accelerometer built on a piezoelectric ceramic shear structure with a wide-bandwidth frequency response and a built-in miniature integrated circuit. With 10 mV/g sensitivity and a ±500 g range it is the high-range model in the family, built for high-level triaxial vibration and moderate shock on submerged or wet structures. Typical uses include underwater vibration testing on hulls, propulsion and subsea equipment, wet-environment NVH and durability testing under spray or immersion.

High-quality ceramics ensure long-term stability and the built-in low-impedance circuit keeps noise low. The laser-welded titanium-alloy 11 mm cube weighs just 5 g, and an integrated waterproof polyurethane 4-pin cable with multi-layer protection is rated to 2 MPa, so the sensor and its connection stay sealed under immersion. Each axis has an M2.5 mounting hole for improved coupling and calibration, and insulated mounting hardware ships as standard.

Sealed for immersion

Laser-welded titanium cube sealed to IP68 with an integrated multi-layer waterproof polyurethane cable rated to 2 MPa, so there is no connector to flood. Rated to 2,000 g rms vibration and 5,000 g pk shock, −50 to +120 °C.

Three axes, one mounting point

Simultaneous X, Y and Z measurement from a single 11 mm cube with ≤ 5% transverse sensitivity. Per-axis M2.5 holes for coupling checks and calibration, and the insulated mounting bracket keeps ground loops out of multi-channel setups.

Built-in IEPE electronics

Miniature low-impedance circuit with 2–20 mA constant-current excitation and 8–12 V bias. Spectral noise of 40 µg/√Hz at 100 Hz and 0.001 g rms broadband resolution, with bandwidth to 9 kHz and resonance ≥ 70 kHz.

Key specifications