Saiv - Model SD208 -CTD/STD Profiler

The model SD208 measures, calculates and records sea water conductivity, salinity, temperature, depth (pressure), sound velocity and water density. Therefore is often the SD208 called sound profiler. Three optional sensors can be added, f. example: dissolved oxygen, fluorescence and turbidity. For optional sensors with several sensitivity ranges, the SD208 has auto range capability to automatically obtain the best sensitivity. The programmed settings and calibration coefficients are maintained in nonvolatile eeprom, and will not be changed/lost if power is disconnected. Data is recorded in physical units and simultaneously transmitted via an RS232 I/O watertight connector for on-line use or wireless serial communication by built in radio. The built in radio is a radio transmitter and receiver that operate on the band with 868Mhz. The operation length is 50 meters free air. To use: A USB radio dongle connected to a Windows computer is needed together with the software SD200W.
Main difference between SD204 and SD208 is better accuracy on the conductivity sensor. This will than also result in better salinity and sound velocity.

The accompanying software, SD200W, contains versatile functions for programming, post- and online data processing and presentations: multigraph, online plotting, density and real depth calculations (weighed profile). The program is continuously extended according to customer requests. Robustness and complete protection from leakage is obtained by vacuum molding the electronic and all other components in solid polyurethane. On/Off-switching is by a magnetic key or from keyboard by cable or wireless communication. A sealed battery compartment contains two replaceable 3.6V C-cells. In practical operation the battery capacity is sufficient for continuous year-around operation with good margin. The instrument is equipped with a mooring bar with a shackle at each end. For use in fixed position or in APB5 (Automatic Profiling Buoy), the manufacturer offers worldwide remote read-out on Internet via GPRS/Satellite (IMARSAT) by Communication Unit CU801.

• Wireless Communication with extremely low power consumption
• Compact & robust design
• Auto-range for Turbidity & Fluorescence
• Long term stability sensors
• High memory capacity
• Sonar equipment compatibility
• Year-long battery capacity
• Depth to: 6000 meters
• Windows based software
• Output in physical units (Calibrated Data)
• Online plotting