Portable Integrated Seismic Recorder & MEMS Accelerometer 

The SMA2 combines Reftek's latest generation of universal broadband seismic recorder, with the advanced high resolution, force-balance accelerometer, model 131D. Designed to facilitate installation, security and maintenance in a single, secure enclosure optimized for structural monitoring applications.

The SMA2 features a high-performance A/D and boasts a wide dynamic range. The dynamic range enables the SMA2 to record very small vibrations from its integrated seismic sensor, providing detailed data for seismic analysis.

The internal triaxial accelerometer is a force-balance MEMS accelerometer which converts acceleration signals into voltage signals to measure low frequency and ultra-low frequency motion. It features high sensitivity, a large 600 Hz linear range, high resolution and wide dynamic range making it perfectly suited for structural monitoring applications. The force balance feedback technique mitigates for mechanical characteristic limitations of conventional accelerometers and overcomes shortcomings in nonlinear distortion and threshold of sensitivity of elastic measuring parts.