FN Archimer Export Format PT C TI Balise intelligente pour mesure scientifique OT New generation of multifunction acoustic device. BT AF GUILLERM, G AS 1:; FF 1:; UR https://archimer.ifremer.fr/doc/1990/acte-1169.pdf LA French DT Proceedings paper DE ;Acoustic equipment;Marine technology;Plate tectonics AB MORS ENVIRONNEMENT has developed for the University of Hawaii a new system, SI 4X1-3, for study of movement of tectonic plate. In a single unit are gathered an acoustic rangemeter, a data acquisition unit (for 8 external sensors), a long range telemetry, and a power pack for 6 to 10 years life. The surface unit is a standard 16 frequencies RM 201 "OCEANO INSTRUMENTS" rangemeter. The programmation, the data transmission control, and the exploitation of the measures are done with a compatible IBM/AT. This system includes the know-how of SUBER and OCEANO INSTRUMENTS, and finds today a very large application field: Control and command of instrumented closing pigs; Seawater quality control without buoys and transmission up to 8 km; Corrosion control on platform and pipeline; Control and command of BOP, Christmas tree of other underwater system; High accuracy positioning for submersible (resolution of plus or minus 1 cm). PY 1990 PD DEC CT Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1991 ID 1169 ER EF