Using the 1003 seismic detector in experimental equipment A. D. Volkov Dzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, 6 Jouly Curie str., Dubna, 141980, Russia E–mail: volkov@nusun.jinr.ru A possibility of using the MET1003 molecular seismic detector in experimental equipment is examined. <...> The detector is characterized by a high sensitivity, which is 5—10 times higher than the sensitivity of piezoelectric sensors and Bruel & Kjaer Vibro transducers. <...> The 1003 monitor allows detection of the vibration frequency accurate to better than 0.2 Hz and amplitude accurate to better 0.1 m in the range 1 to 200 Hz. Working temperature range of the detector is (–40 +50) C. Owing to its high performance and small size, the detector has a wide field of application. <...> The investigation has been carried out at the Dzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research. <...> PACS: 07.07.Df Keywords: vibration, molecular seismic detector, the electrolyte, detection cell, spectrum, Fourier series. <...> Датчик отличается рекордной чувствительностью, которая в 5—10 раз превосходит чувствительность пьезодатчиков и датчиков фирмы liruel & Kjaer Vibro.! <...>