The Metrix ST5484E is a self-contained, loop-powered seismic velocity transmitter that incorporates a piezo-electric accelerometer, signal integrator, RMS peak detector, and 4-20 mA signal conditioner into a single, robust package.
The transmitter is also available in a 4-wire version where the extra two conductors provide direct access to the raw acceleration signal, facilitating easy connection to portable data collectors and analyzers.