B02B04

The B02B04 is a reference-grade uniaxial IEPE accelerometer built on a piezoelectric ceramic shear sensing element with a wide-bandwidth frequency response, low transverse sensitivity and low thermal transient response, with the excellent year-to-year stability needed of a calibration transfer standard. With 10 mV/g sensitivity and a ±500 g range it is the high-range reference in the family, with a 50 kHz resonance for calibrating sensors at higher levels and frequencies. Typical uses include back-to-back comparison calibration of accelerometers at high levels, verification of shakers and calibration systems, standard bench tests and incoming inspection.

The back-to-back design carries an M5 × 4.6 (10-32 opt.) mounting thread on both the upper and lower faces, so the sensor under test bolts directly onto the reference on the shaker and both see the same motion. The built-in high-temperature-rated low-impedance circuit gives low output noise and stable sensitivity over temperature from any 2–20 mA IEPE source. The laser-welded stainless-steel 17.2 × 17.2 × 18.7 mm housing weighs 31.5 g, is sealed to IP68 and carries a side M5 (10-32 opt.) connector.

Built as a reference

Shear sensing element with ≤ 2% transverse sensitivity, 1% non-linearity and excellent annual stability, so the reference adds as little uncertainty as possible to a comparison calibration. ±5% response from 1 Hz to 8 kHz (±10% over 0.5 – 10k Hz) with resonance ≥ 50 kHz.

Back-to-back mounting

M5 × 4.6 (10-32 opt.) thread on the base for the shaker and the same thread on top for the sensor under test, so reference and test sensor are rigidly coupled and move together well beyond the calibration band. Mounting torque 3.0 N·m. Side M5 (10-32 opt.) connector keeps the cable clear of the stack.

Low noise, stable over temperature

Built-in high-temperature-rated IEPE circuit with 2–20 mA excitation and 8–12 V bias, spectral noise of 24 µg/√Hz at 100 Hz and 0.001 g rms broadband resolution, rated to 3,000 g rms vibration and 8,000 g pk shock, −50 to +120 °C.

Key specifications