Attention:
Please note that the Ferrybox can only be operated upon request. Request operations with the Ferrybox to AWI-Logistics in sufficient time prior to the cruise.
Ferrybox data stored in data acquisition system DShip are uncorrected measurement data.
Summary
Responsible Persons
Components
The system consits of the transducer, the electronic chassis, the computer in the echosounder room (G-707) and the subsidiary display at the winch control station (User).
The data acquisition and processing software VmDas and the synchronizing software Easy2Sync are installed on the computer.
The 150kHz transducer is mounted behind an ice protection window and reaches water depth up to 400m with resolution of 8m ("Cell Size" at 1 to 5 kn ship's speed) and accuracy of about 0.19 m/s.
??? The angle between the ship centerline and transducer centerline is 45° direction starboard ???.
The FerryBox on board of a ship of opportunity consists of a water loop that gets its water from the outside, a data management system for control, data acquisition and storage.
Installierte Sensoren:
• pH Sensor: Glas Elektrode EGA 140-X-E, Meinsberger MV3010pH Messverstärker
• O2 Sensor: Oxygen Optode 3835, Aanderaa
• Phycocyanin: Cyclops (1) P, Turner
• CDOM: CDOM Cyclops (2) U , Turner
• Salinometer: FSI
• Chlorophyll a und Trübungssensor: Scufa, Turner
Sensoren / Aktoren für FerryBox Steuerung:
• Durchflusssensor: Flow Main, Flow Out
• Drucksensor
• Ventile: Motorkugelhahn Einlass Coster, Motorkugelhahn Ausgang Coster
• Magnetventile: Süßwasser normal, Süßwasser Druckspüllung
• Säurepumpen: 1. ProMinent Säurepumpe für H2SO4, 2. ProMinent Säurepumpe für Oxalsäure
• Kreiselpumpe: Mainpump
Subdevices
Position
Data logging, storage and archiving
Logged parameters
Central geographical ship's position and time standard
??? centering of the GPS Position to the transducer ???
Rawdata storage on board
Ferrybox data stored in data acquisition system DShip are uncorrected measurement data.
The data acquisition and processing software VmDas creates rawdata on the local drive of the computer.
Every hour the software Easy2Sync copies the data to a local backup file structure.
Every 3 hours the software Easy2Sync synchronizes the backup data to the directory structure of the mass storage.
Attention: Deleting files in the directory structure of the mass storage will also delete these files in the backup file structure with the next synchronization run. But: As long as these files are not removed from the local rawdata drive these files will be copied again to the local backup file structure with the next backup run and to the directory structure of the mass storage with the next synchronization run.
Data volume (MB per day) ca |
??? |
|---|---|
Number of files per day ca |
??? |
Dship
Device name |
Ferrybox |
|---|---|
Parameters |
CDOM [ppb]; conductivity [mS/cm^2]; flourescence chlorophyll a (raw) [µg/l]; flourescence chloropyll a (TR) [µg/l]; flourometer temperature [°C]; flow [I/min]; pH; pH temperature [°C]; phycocyanin [cells/ml]; quality-flag; salinity; sound velocity [m/s]; turbidity [NTU]; water temperature [°C] |
Data archiving on land
(for authorized users only). The reduced, unevaluated DShip data set can be extracted from https://dms.awi.de.Kurz nach Ende eines Reiseabschnittes stehen die Messdaten der Ferrybox im DShip-Landsystem zur Verfügung.
Ferrybox data stored in data acquisition system DShip are uncorrected measurement data.
File format(s) |
??? |
|---|---|
Calibration certificates |
??? |