This advanced monitoring system offers long-term sensors stability for unattended data collection, in either seawater or fresh water environments. Data is stored directly onto a PC running the Windows based IDRONAUT software. 
The system comes complete with two thermometers: the remote one is fitted near the water sampling port to accurately measure the temperature of the surface waters, whilst the second is fitted inside the cell to allow Salinity calculations. The system is housed in a compact, splash-proof stainless steel unit with an adjacent parallel transparent acrylic flow-through measuring chamber, which can be easily removed for cleaning. The sample volume of the measuring chamber is 250 ml only, which ensures a very fast response time. A pressure sensor inside the cell, acts as an accurate flowmeter. The measurement sensors installed in the system are manufactured by IDRONAUT and are exported all over the world. The system is controlled by an advanced electronics and can measure, store and transmit sensor data reading in real time at sampling rates up to 20Hz (CTD only) . The system is configured to be directly connected to a personal computer by means of the RS232C serial port, whilst other two analogue ports interface (if required) the external Fluorometer and the Turbidity Meter (not supplied with the equipment). |
» TWO TEMPERATURE SENSORS
Each sensor features a very fast platinum resistance thermometer. Negligible self-heating effect. One thermometer is located inside the mesuring flow-through cell and the remote one can be fitted near the water sampling port. | » FLOW CONDUCTIVITY SENSOR
Features a large diameter, seven-ring quartz cell, which does not require platinum black deposition and which can be mechanically cleaned without recalibrating. | » OXYGEN SENSOR
Features an innovative maintenance-free polarographic oxygen sensor. | » pH GLASS SENSOR and SOLID GEL REFERENCE ELECTRODE
High-pressure glass membrane pH electrode in conjunctionwith a ceramic junction-less reference electrode. | » FLUOROMETER INTERFACE (external installation)
The system can interface a remote SEAPOINT Fluorometer installed in a second measuring flow-through cell. | » TURBIDITY METER INTERFACE (external installation)
The system can interface a remote Turbidity Meter installed in a second measuring flow-through cell. | » GPS
If a GPS is connected to a PC running the REDAS-5 software. acquired data is automatically time stamped and associated to the geographical coordinates (longitude, latitude) | » FSIS COMPATIBILITY
System conforms to the “International SeaKeepers Society” FSIS standard. |
| OPTIONS | » HULL TEMPERATURE RECORDER
In alternative to the second temperature sensor, it is possible to interface the IDRONAUT “HULL TEMPERATURE RECORDER”, which can be easily installed on the ship hull with its magnetic clamp. | » BLUETOOTH® WIRELESS ADAPTER
This option allows bidirectional full duplex communications between the system and a PC equipped with a Bluetooth® interface conforming to the Bluetooth® class 1 (100 m) connectivity SPP protocol. | » RS422 – RS485 INTERFACE
Instead of the RS232C interface, upon request, the system can be equipped with an RS422 or RS485 |
 The fundamental properties of seawater, like:
Salinity, Sound Speed, Water Density, Pressure to Depth Conversion, Potential Temperature, Oxygen ppm are obtained using the algorithms described in the UNESCO technical papers in marine science no. 44 "Algorithms for computation of fundamental properties of sea water". | SYSTEM SPECIFICATIONS: | Sampling rate:
Communication protocol:
Operator interface:
Battery power supply:
Dimensions and weight: | user selectable.
proprietary byte-oriented, binary and plain message protocol.
friendly menu-driven user interface.
9 .. 18 V, 150 mA @ 12 V.
318x102x21cm, 4x12,5x8 inches; 4 kg. |
IDRONAUT REDAS-5 Windows Software
REDAS-5 software, through a simplified and friendly operator interface, allows taking full control of the ON-LINE FLOW-THROUGH multiparameter system and facilitates real-time data acquisitions. REDAS-5 programme is a true 32-bit Windows application, which flawlessly runs on Windows 98SE, ME, 2K and XP. REDAS-5 shows the acquired data graphically and numerically thus allowing the operator to dynamically change the graphical and numerical set-up during data acquisition. Post-processing functions and data extraction procedures, in function of time, pressure or numerical intervals can be applied to acquire data in real time. Among the operations that REDAS-5 can perform, it is worth mentioning: automatic start and stop of data acquisition; processing and filtering of acquired data in real time (time lag compensation, smoothing etc.); acquisition of geographical coordinates from a GPS device; acquired data conversion into text files; automatic scaling of the graphical window X and Y axis.
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