Kistler cuts noise on latest triaxial accelerometer
09/11/2022
Sensor specialist Kistler has announced that it has updated its 8763B triaxial accelerometer. According to the company, the noise thresholds of the sensor are now significantly lower for all of its ranges.
Due to improved testing procedures, thresholds are up to 58% lower, which allows for more accurate measurements in micro-vibration monitoring. Manufacturing process improvements have also reportedly led to shorter manufacturing times.
Because micro-vibrations occur in the micro-g range, a highly sensitive measuring chain with very low noise is required for such applications. The integrated electronics piezoelectric (IEPE) 8763B triaxial accelerometer is the most commonly used Kistler sensor for these measurements and permits vibration monitoring in three mutually perpendicular axes.
The measuring threshold determines the smallest possible level of vibration that can be reliably picked up by the sensor. In 2021, Kistler improved the noise threshold of the sensor for the 50 g range. More efficient testing procedures and large investments in Kistler’s facilities then led to further improvements. The 8763B now features a significantly lower noise threshold for all of its ranges; not only does it achieve a 58% lower noise threshold for the 100 g range but also a 37% reduction for the 250 g range, 52% for the 500 g range, 54% for the 1000 g range and 51% for the sensor’s highest range of 2000 g. Kistler states that, with these improvements, the sensor is particularly well suited to applications such as modal analysis, frequency response measurement and e-motor testing.
The 8763B sensor provides a wide frequency response in each orthogonal axis, making it useful for dynamic vibration measurements, especially on lightweight structures. Other features include a lightweight hermetic titanium housing and high immunity to base strain due to the integration of shear element technology.
Sensors in the 8763B family can be installed on test objects by either adhesive mounting or flexible studs due to three 5/40 threaded holes, making it possible to fully utilise each mounting side of the cube design and ensuring reliable mounting for the calibration of each axis.
