Accelerometer calibration.

MB Dynamics (MB) has announced the global market launch of its Win475 MULTI-DUT CRASH-CAL (MDCC) automated accelerometer calibration system.

The MB Dynamics Win475 MDCC increases metrology center throughput and productivity by facilitating the accurate, efficient, and simultaneous automated calibrations of up to eight (8) single axis piezoresistive accelerometers (DUT’s) of the same model and type, over a frequency range of 10 to 4000 Hz, complying with SAEJ211, SAE2570, and other global automotive industry test standards. Its versatile design further supports the automated single calibrations of non-piezoresistive DUT’s, including piezoelectric, IEPE, voltage and velocity sensors, over frequencies from 5 Hz to 15 kHz. These combined features can help calibration technicians to achieve a measurable 70%-time savings over single-DUT calibration methods with greater accuracy and repeatability.

As a complete turnkey system, the industry-exclusive design of the Win 475 MDCC automated accelerometer calibration system seamlessly integrates MB’s own Model CAL25AB air bearing exciter, together with its Model 407-8X multi-channel signal conditioner; MB 500VI power amplifier; and proprietary MB Win475 MDCC software, further supported by an industry standard NI DAQ card.

Other system components include an internal removable reference (REF) accelerometer with 100 mV/g sensitivity and usable frequency range to 15 kHz, further traceable to national standards and ISO 17025; an eight-DUT test instrument mounting fixture (TIMF) adaptor plate; a single-DUT TIMF; a 475PCM module; a Windows 10 PC, monitor, keyboard and printer; a calibration accessory kit; user manuals; and system installation, start-up and training support.

As a multi-DUT automated calibration system, the MB Win475 MDCC quickly and efficiently measures and saves relevant accelerometer characteristics, such as ZMO, Zin and Zout, as well as input & output impedance values. Its versatility and flexibility allow an end-user to choose from among seven (7) individual (six internal, one external) high-precision resistors for shunt calibration. The system also reads onboard sensor electronic identifications, such as 1-Wire Dallas ID memory chips or TEDS piezoelectric accelerometers (per IEEE 1451). The MB MDCC system may be further integrated into customer-specified databases for additional automation capabilities with reduced calibration data transference errors.

The automation afforded by the MB Win475 MDCC mitigates the risks of human errors inherent to manual accelerometer calibration systems, thereby freeing up technicians for other measurement tasks. The increased frequency of accelerometer calibrations afforded by system further helps technicians to improve in-laboratory test data quality and productivity while reducing documentation errors. The system has proven especially useful within crash test and automotive safety test laboratory environments, in applications where larger volumes of piezoresistive accelerometers are in use, therefore requiring more frequent recalibrations. In addition, the MB Win475 MDCC provides a number of value-added end-user benefits, including bottom-line cost savings, with its elimination of outsourced calibration service needs; implementations of more efficient and effective in-house calibration processes; and simplifications of internal record-keeping accuracy, further aiding in ISO audit compliance.

The Win475 MDCC automated accelerometer calibration system is also accompanied by full technical support, with in-house customer training provided by the 40-year calibration experts at MB Dynamics.

#Automotive @MBDynamics @EmbassyGlobal