Miniature Deep Sea Temperature Data Recorder: Design, Construction, and Use

摘要

A miniature temperature recorder has been developed to be used with the hydraulic piston sediment corer (HPC) on the Deep Sea Drilling Project (DSDP). The instrumentation fits into pressure-sealed slots in the wall of the HPC, allowing temperature measurements to be made simultaneously with coring operations. Temperatures from -2 to 70 C are measured to a resolution of about 0.01 C. Up to 1300 13-bit measurements are recorded in random access memory (RAM), at a sampling rate ranging between 0.1 s to over 100 min., as specified by the operator in a program loaded into a microprocessor of the instrument. During recording the instrumentation uses about 3.5 mamp at 7.5 volts, which can be supplied for about 20 hours of operation by a custom-made pack of silver-oxide batteries.