B05B72

The B05B72 is a uniaxial IEPE waterproof accelerometer with a built-in miniature impedance converter that turns the piezoelectric charge signal into a low-impedance voltage output. With 50 mV/g sensitivity and a ±100 g range it is the 50 mV/g model in the family, a 9 g watertight cube with ±100 g for general underwater vibration measurement. Typical uses include underwater vibration testing on small structures, subsea equipment monitoring and general measurement in wet, humid or washdown conditions.

A one-piece vulcanized polyurethane cable with multi-layer protection is rated to water pressure above 2 MPa and is inherently resistant to moisture and corrosion, so there is no connector to flood. The built-in IEPE circuit runs from any 2–20 mA constant-current source with an 8–12 V bias. The laser-welded stainless-steel 8.5 × 8.5 × 10 mm housing weighs 9 g, is sealed to IP68 and mounts on an M3 thread with the supplied screws, with the cable exiting from the side. TEDS is available to order.

Sealed for immersion and corrosion

Laser-welded stainless-steel 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 800 g rms vibration and 2,000 g pk shock, −50 to +120 °C.

Built-in IEPE electronics

Shear-mode piezoceramic with a built-in impedance converter: ±5% response from 1 Hz to 8 kHz (±10% over 0.5 – 10k Hz), resonance ≥ 50 kHz, spectral noise of 8 µg/√Hz at 100 Hz and 0.0002 g rms broadband resolution, straight into any IEPE input on the surface.

Tiny watertight cube

At 9 g and 8.5 × 8.5 × 10 mm, the B05B72 fits on small submerged components and adds almost no mass, mounting on an M3 thread with the supplied screws and a low side cable exit.

Key specifications