Unlike traditional seismic sensors, molecular-electronic ones use a liquid inertial mass. A sensitive element inside consists of a system of electrodes attached to the body. These electrodes convert an alternating flow of a working liquid caused by the inertia force into a variation of an electric current between electrodes.
A high ratio of mechanical signal conversion into an electric current and a wide frequency and dynamic ranges have been achieved. These properties, in particular, provide a possibility to produce seismic sensors of a cutoff frequency at low frequencies up to thousandths of a hertz, high sensitivity and low noise level.
A force-balance feedback provides characteristics identical to the level of 0.2%.
No moving components of precision mechanics as well as a relative simplicity of the structure provide a high reliability to such instruments and resistance to adverse external forces inevitable while transporting and operating in the field.
Read a Case Study of our accelerometers used for monitoring high-rise buildings in Istanbul, Turkey.