Micro CTD

Researcher Contact: Heather Broadbent
Micro CTDConductivity, temperature and depth (CTD) data of the oceans are important parameters for oceanographic research applications and are used to determine salinity. Conductivity and temperature are fundamental properties of marine and fresh waters from which salinity and density can be derived and are commonly used in the monitoring and analysis of marine and freshwater environments, industrial wastewater, municipal wastewater and desalination plant effluent. This system is a small, rugged, low cost, low power instrument that can be deployed in the field for comprehensive field monitoring for environmental signals or for security monitoring.
System Development
Micro CTD.The integrated microsensors (conductivity and temperature) were developed for in-water measurements using novel PCB MEMS fabrication techniques coupled with liquid crystal polymer (LCP) material. The choice of PCB MEMS was driven by the requirement of a low investment process and technology approach that would still permit adequate systems develop capability.
Technical Data and Results
Four-electrode conductivity cell 0-70 mS/cm
Resistive temperature device -4-55 C
Depth 140 meters
RS 232 I/O
Internal Power