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Gravimeter instruments used to monitor volcanic activity. The U.S. Geological Survey (USGS) is conducting market research to determine the availability of qualified businesses capable of providing gra... Gravimeter instruments used to monitor volcanic activity. The U.S. Geological Survey (USGS) is conducting market research to determine the availability of qualified businesses capable of providing gravity meter instruments and associated accessories used to monitor volcanic activity. These gravity meters must be lightweight, rugged, contain dual batteries and be stable and accurate. See Technical Specifications below. This sources-sought announcement is not a request for quote or proposal and the Government is not committed to award of a purchase order or contract pursuant to this announcement. The information resulting from this market research is simply for planning purposes to assist the Government in determining its acquisition strategy. The Government will not pay for any costs incurred in the preparation of information for responding to this notice. The North American Industry Classification System (NAICS) code ¿ 334515 Instrument manufacturing for Measuring and Testing Electricity and Electrical Signals and associated size standard 750 employees apply to this announcement. All responsible sources may submit a brochure and/or technical specifications detailing the ability of their product to meet the Technical Specifications. Responses to this announcement shall only be accepted through electronic mail addressed to Cheryl Ciccarelli, Contracting Officer, cciccarelli@usgs.gov and must be uploaded and received in their entirety no later than May 9, 2019. Responses submitted by hardcopy or the FedConnect web portal or the FedConnect Message Center shall not be accepted or considered. Technical specifications for Volcano Science Center gravimeter: - Total weight (unit plus batteries) less than 15 lbs. - Dual batteries (so power is not interrupted when batteries are replaced) - 0.1 microgal reading resolution - Automatic correction for solid earth tides, instrument tilt, seismic noise, and drift - Residual drift of less than 30 microgals/day - Repeatability of no more than 5 microgals - Dimensions less than 10 inches on all sides - Sensor with electrostatic nulling - More than 2 GB of internal memory - Data output rate of at least 5 Hz (for use in continuous measurements) - All-weather operation and resistance to water and dust - Remote operation via Bluetooth- or Wifi-connected device