The Hardy Shaker ensures that the Seismic Sensors and Transmitters that you have installed are working properly and giving you the results you need. Just like the pressure and flow instruments in your facility need calibration checks every year, so do your Seismic Sensors and Transmitters. This system puts the calibration check of those Seismic Sensors and Transmitters within your control, and within your budget. The most cost effective maintenance strategy is a predictive and proactive strategy, versus a preventative maintenance or run-to-failure strategy. The entire premise of a predictive and proactive maintenance program is based on the reliability and integrity of the transducers providing the information in a timely way. If the Seismic transducers are not working properly, you will not receive the value you are expecting in order to produce the return on investment that you have already made. The Hardy Shaker is a necessary tool to ensure your proactive maintenance strategy is effective. The Hardy Shaker comes in two models - HI-903 and HI-913.