SUNA Deep
Satlantic is pleased to introduce the SUNA Deep to our line of leading edge UV nitrate sensors. Based on the proven MBARI-ISUS nitrate sensor, the SUNA Deep has been redesigned for easy integration with AUV's of all types. SUNA Deep provides real time, chemical-free nitrate calculations in deep ocean environments using Satlantic’s advanced UV absorption technology. The sensor is complemented by SUNACom, a newly developed Windows (or Mac) based software for easy set-up, integration and in-field calibrations.
SUNA Deep features include:
- Real time nitrate calculation
- Full UV spectrum for maximum accuracy
- Real-time temperature/salinity compensation
- Easy to use SUNACom software package
- Simple software based in-field calibrations
- Corrosion proof anodized aluminum housing with 2000 m depth rating
For AUV integration details, please ask about our third party integration experience. If you have any questions, please contact support@satlantic.com.
PERFORMANCE
| Detection range | 0.007 to 28 mg/l-N *(0.5 to 2000 µM) |
| Accuracy | ±0.028 mg/l (± 2 µM) or ± 10% of reading, whichever is greater ( alpha under laboratory conditions) |
| Long term drift: | 0.004 mg/l per hour of lamp time |
| Thermal Compensation: | 0 to 40 °C |
| Salinity Compensation | 0 to 50 psu |
OPTICAL
| Path length: | 1 cm |
| Wavelength range | 190 - 370 nm |
| Lamp type | Continuous wave deuterium lamp |
| Lamp lifetime: | 900 h |
ELECTRICAL
| Input voltage | 8 - 18 VDC |
| Power consumption | 7.5 W (0.625 A @ 12V) nominal |
| Sample rate | 1 Hz (when onboard averaging disabled) |
| Communications options | RS-232; Analog output 0 - 4.096 VDC and 4 - 20 mA SDI-12 |
PHYSICAL
| Depth rating | 2000 m (6560 ft) |
| Length: | 555 mm (21.8 in) |
| Diameter | 57 mm (2.25 in) |
| Weight: | 1.8 kg (3.9 lb) in air 0.36 kg (0.8 lb) in water |
| Housing material | Anodized aluminum; float attachments available |
| Operating temperature: | 0 to 40 °C |
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The Satlantic SUNA Nitrate sensor is complemented by SUNACom, a graphical software application available for Windows 7/XP/Vista and Mac OS X that makes SUNA set up, SUNA operation and in-field calibration updates easy and robust.
SUNACom software makes it easy to:
- Configure any SUNA setting and control SUNA operating mode.
- Update SUNA calibration with step-by-step calibration wizard, including PDF calibration reports, calibration file comparison utility, and calibration file upload.
- Graphically plot processed and/or raw SUNA data in real time or via file playback. View nitrate and ancillary time series and navigate sequenced absorbance plots and UV spectra.
- Re-process previously logged SUNA data files. Experiment with different processing parameters and calibration files to re-calculate nitrate values.
- Define custom meta-data fields to better organize logged SUNA data.
- Convert raw or processed SUNA data to calibrated comma separated values suitable for import to spreadsheets and database.
- Please see the release notes for a complete list of features and improvements in SUNACom 2.2.0 and refer to the SUNA User Manual for more information.
Download SUNACom 2.2.0
SUNACom 2.2 adds support for Mac OSX and introduces new features for data file conversion, custom log file headers, and auto-connect. For a complete list fo fixes and features in this release, please refer to the release notes.
SUNACom-2.2.0-b6-x86.exe for Windows XP/Vista/7 
SUNACom-2.2.0-6-macos-x86_64.pkg for Mac OS X Snow Leopard and Lion
What is the result of using the "Reprocess Nitrate Data" function under the SUNACom Tools Menu ?
The "Reprocess Nitrate Data" tool in SUNACom allows the user to select a calibration file and a raw file.
The resulting ASCII file contains a column for the original Nitrate concentration as calculated by the SUNA, using the calibration file onboard the sensor, and a column of recalculated Nitrate using the chosen calibration file.
Hydro-Wiper
The Hydro-Wiper is an external anti-fouling system designed specifically for use with the SUNA. The Hydro-Wiper keeps the SUNA sample windows clean for several months even in the most aggressive fouling environments, helping prevent costly site visits for manual cleaning and loss of data.
SUNA Anti-fouling guard
The SUNA anti-fouling guard is a semi-circular piece of perforated copper attached to a plastic armature that fits into the sample chamber. The anti-fouling guard passive fouling prevention through the release of copper ions that inhibit biological growth in the area. The anti-fouling guard provides a reliable and affordable approach to increase deployment time, decrease operating costs, and collect high quality data for mooring applications.
SUNA Flow cell
The SUNA flow cell is designed to adapt the SUNA for flow through operations on moorings with pumped flow, ship-board underway systems or for laboratory testing and calibration. The flow cell attaches to the SUNA sample chamber and tightly seals against the optical chamber windows. Nylon barbed fittings are provided to connected the flow cell to available pumped flow.
SBE 5M Pump
The SBE 5M pump module consists of a centrifugal pump head and a long-life, DC, ball-bearing motor contained in a compact, plastic housing for depths to 600 meters. The pump impeller and electric drive motor are coupled magnetically through the housing, providing high reliability by eliminating moving seals. Motor speed and pumping rate remain constant over the entire input voltage range. The motor drive electronics is intrinsically protected against accidental reversed polarity.
Alkaline Battery Pack
Satlantic's reliable and user-friendly Alkaline Battery Packs are available in 102 Ah and 51 Ah capacities. The design of the internal battery compartment allows the user to easily change the D-Cell batteries with off-the-shelf replacements. The battery packs consist of an anodized aluminum pressure case, a D-cell battery compartment and a removable end-cap.
