The primary calibration of acoustic and vibration transducers is well standardized and confirmed by round-robin interlaboratory test. Secondary calibration is also very common with traceability to primary calibration. Examples of set-ups for microphone and accelerometer secondary calibration are based on accuracy and frequency-response testing. Field check methods, using reference sources and other methods (like Phantom Calibration), are described, defining advantages and shortcomings.
展开▼