The accelerometer calibration station is an important tool used to verify the accuracy of piezoelectric accelerometers. Piezoelectric transducers create a voltage output when stress is applied to the material. The voltage output is read and filtered by a computer to translate accelerometer output into a component of acceleration. Proper accuracy of accelerometers will provide reliable test data for experiments which analyze the frequency of structures. The Accelerometer calibration system vibrates the accelerometers at a known frequency/magnitude. The system compares the output of the accelerometer to these known values and determines if the output meets its accuracy parameters. System Specifications Manufacturer The Modal Shop Type / Model 9155C Frequency Range 5Hz–10kHz Typical Measurement Uncertainty 2.2% (5-10Hz) 1.2% (10-100Hz) 0.7% (100Hz) 1.0% (100-1,000Hz) 1.4% (1,000-5,000Hz) 1.9% (5,000-10,000Hz) Calibration Method Back-to-back comparison per ISO 16063-21 Measurements Sensitivity, Amplitude, Phase, Bias, Resonance, Linearity, Shock, DC Offset, Bridge Resistance, DC Sensitivity Accelerometers Supported ICP®, Charge, Voltage, Capacitive, Piezoresistive, CVLD Sensors Supported Acceleration, Velocity TEDS Sensor Support IEEE 1451.4, IEEE P1451.4 Excitation Type Stepped Sine, Multi-Sine Acceleration Levels 0.1 to 10 gpk Download a copy of the system specifications: Accelerometer Calibration System
