B02Y70

The B02Y70 is a three-axis watertight IEPE accelerometer built on a piezoelectric ceramic shear structure with a wide-band frequency response and high-quality ceramics with the long-term stability to keep measurements accurate for years. With 10 mV/g sensitivity and a ±500 g range on each axis it is the ±500 g model in the family for high-level triaxial vibration on submerged or wet structures. Typical uses include underwater vibration testing, hull, propeller and propulsion vibration, marine and offshore structures and washdown or flooded installations.

A one-piece vulcanized polyurethane cable with multi-layer protection is rated to water pressure above 2 MPa and exits from the side on a single 4-pin lead carrying all three channels, so there is no connector to flood. The built-in low-impedance circuit gives low noise and a well-behaved sensitivity temperature response (−0.07 %/°C). The laser-welded low-density titanium-alloy 15 × 15 × 10 mm housing weighs 18 g, uses memory-alloy fasteners for a stable, reliable structure, has a calibration hole on each axis, and bolts down through a ⌀4.1 mm through-hole with the insulated mounting kit supplied.

Sealed for immersion and corrosion

Laser-welded titanium housing sealed to IP68 with a one-piece vulcanized PU cable rated above 2 MPa and inherently resistant to moisture and corrosion. No connector, no O-ring, nothing to flood. Rated to 2,000 g rms vibration and 5,000 g pk shock, −50 to +120 °C.

Three axes, one cable, one bolt

Simultaneous X, Y and Z measurement from a single 15 × 15 × 10 mm block with ≤ 5% transverse sensitivity. One side-exit 4-pin cable carries all three channels, per-axis calibration holes make verification straightforward, and the through-hole mounts at any orientation with the insulated kit supplied.

Built-in IEPE electronics

Shear-mode ceramics with memory-alloy fasteners give a ±5% response from 1 Hz to 6 kHz with resonance ≥ 30 kHz, 1% non-linearity and a ≤ 1 s discharge time constant. Built-in IEPE circuit with 2–20 mA excitation and 8–12 V bias, spectral noise of 40 µg/√Hz at 100 Hz and 0.001 g rms broadband resolution.

Key specifications