B10BG3

The B10BG3 is a micro-miniature single-axis IEPE modal testing accelerometer with a built-in impedance converter that turns the piezoelectric charge signal into a low-impedance voltage output, with excellent long-term stability and repeatability. With 1,000 mV/g sensitivity and a ±5 g range it is the high-sensitivity member of the family, with 1,000 mV/g, ±5 g and a 1.6 µg/√Hz noise floor for very low-level modal and NVH measurements. Typical uses include modal analysis of large or lightly excited structures, low-level NVH on vehicle bodies and interiors, vibration control at low levels and multi-point measurements on conductive structures.

The built-in IEPE circuit runs from any 2–20 mA constant-current source with an 8–12 V bias. The laser-welded titanium-alloy 23.7 × 15.4 × 10 mm housing weighs just 11 g and is sealed to IP68, and a ⌀3.1 mm central through-hole lets it be bolted down at any orientation so the M5 side (10-32 opt.) connector can face the cable run. An integrated insulating structure in the base, used with the supplied mounting hardware, isolates the sensor from the ground of the test structure (≥ 10⁸ Ω) so multi-channel modal arrays on conductive bodies stay free of ground loops.

Isolated from the structure

An insulating structure built into the base, together with the supplied installation hardware, isolates the B10BG3 from the ground of the test article (≥ 10⁸ Ω), so dozens of channels can be bolted to a car body or machine frame without ground loops corrupting the modal data.

360° through-hole mount

A ⌀3.1 mm central through-hole takes an M3 screw at any rotation, so the side connector can point along the cable run on every mounting point. Small and light at 11 g and 23.7 × 15.4 × 10 mm, it adds little mass to panels and light structures.

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 ≥ 40 kHz, spectral noise of 1.6 µg/√Hz at 100 Hz and 0.00001 g rms broadband resolution, rated to 3,000 g rms vibration and 5,000 g pk shock.

Key specifications