B10Y42

The B10Y42 is a high-sensitivity three-axis IEPE accelerometer built on a piezoelectric ceramic shear sensing element with a wide-bandwidth response and a low-noise circuit optimized for low vibration amplitudes. With 1,000 mV/g sensitivity, a ±5 g range and a ±5% response from 0.1 Hz, it is the most sensitive member of the family, with 1,000 mV/g and a response down to 0.1 Hz for the lowest-amplitude, lowest-frequency structural motion. Typical uses include high-rise building and long-span bridge sway, dam and foundation monitoring, ground-borne and micro-vibration measurement and seismic-grade structural surveys.

The built-in low-impedance circuit gives a stable low-frequency response and spectral noise of just 0.24 µg/√Hz at 100 Hz. The laser-welded titanium-alloy 38.6 × 38.6 × 20 mm housing weighs 176 g, bolts down through a ⌀5.1 mm center hole at any rotational orientation, and keeps an M2.5 mounting thread on each axis for coupling and calibration. Three M5 connectors bring out the X, Y and Z channels, and insulated mounting hardware ships as standard.

High sensitivity, low noise

1,000 mV/g output with spectral noise of 0.6 / 0.24 / 0.16 µg/√Hz at 10 / 100 / 1000 Hz and 0.00001 g rms broadband resolution, so the micro-g amplitudes of buildings, bridges and foundations come through clearly above the noise floor.

Three axes, one bolt

Simultaneous X, Y and Z measurement from a single 38.6 × 38.6 × 20 mm block with ≤ 5% transverse sensitivity. The center through-hole mounts at any angle, and per-axis M2.5 threads make coupling checks and calibration straightforward.

Stable low-frequency IEPE electronics

Low-impedance circuit with 2–20 mA constant-current excitation, 8–12 V bias and a ≥ 10 s discharge time constant holds the ±5% response from 0.1 Hz to 2 kHz, with resonance ≥ 13 kHz. Rated to 40 g rms and 100 g pk.

Key specifications