Founded in 1990 by a small group of scientists specializing in physics, seismology, electronics, and seismic instrumentation, PMD Scientific, LLC. manufactures a full range of seismic instrumentation, including standard and custom-built seismo-meters, force-balanced accelerometers, and high-resolution seismic and strong-motion data loggers and digitizers. Our products operate successfully on six continents in more than twenty countries. PMD has also been the recipient of numerous Small Business Innovation Research grants, awarded by the National Science Foundation, the National Oceanic & Atmospheric Administration, and the Department of Energy. The company is located in Central Connecticut half way between New York and Boston.

PMD seismometers are based on proprietary electrochemical technology, and equipped with unique features which are unavailable in traditional electromechanical sensors. The company's electrochemical seismic sensors are extremely robust, and designed to require minimal maintenance, no mass locks for handling and transportation, and no mass centering over the full operating temperature range. Moreover, they can stay fully functional at significant installation tilts.

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