"Sea-Bird SBE 37 MicroCat IMP-CT with optional pressure (submersible) CTD sensor series"@en . . "SDN:L22::TOOL0019" . "A series of high accuracy conductivity and temperature recorders with optional pressure sensors designed for deployment on moorings. The IMP model uses an Inductive Modem (IM) for real-time data transmissions and has internal batteries. It is fitted with an integral pump (P). The sensors may or may not have an integrated pressure sensor."@en . .