Instrument Description for DY029 Stainless Steel Frame CTD
CTD Unit and Auxiliary Sensors
The CTD unit comprised a Sea-Bird Electronics (SBE) 9 plus underwater unit, an SBE 11 plus deck unit, a NOC-S stainless steel 24-way frame and 24 10 L OTE Water Samplers; all of which were mounted on a stainless steel 24-way CTD frame. Attached to the CTD were two SBE 3P temperature sensors, two SBE 4C conductivity sensors, one Paroscientific Digiquartz pressure sensor, one SBE 43 dissolved oxygen sensor, two Biospherical QCP Cosine PAR sensors, one WETLabs BBRTD light scattering sensor, one Benthos 916T altimeter one CTG Aquatracka MKIII fluorometer, one CTG Alphatracka MKII transmissometer and one Workhorse Monitor 300 Khz LADCP.
Due to problems experienced with the secondary conductivity sensor it was replaced mid cruise with a backup sensor.
| Sensor unit | Model | Serial number | Full specification | Calibration dates (YYYY/MM/DD) | Comments |
|---|---|---|---|---|---|
| CTD underwater unit | SBE 9 plus | 09P-24680-0637(Ti) | SBE 9 plus | 2004-03-10 | - |
| CTD deck unit | SBE 11 plus | 11P-34173-0676 | - | 2015-01-06 | - |
| Carousel | NOCS Stainless steel 24-way frame | SBE CTD1 | - | - | - |
| Pressure sensor | Paroscientific Digiquartz | 79501 | Paroscientific Digiquartz | 2015-01-06 | - |
| Temperature sensor | SBE 3P | 3P-4712(Ti) | SBE 03P | 2014-07-03 | - |
| Temperature sensor | SBE 3P | 3P-5660 (Ti) | - | 2014-07-03 | - |
| Conductivity senor | SBE 4C | 4C-2858 (Ti) | SBE 04C | 2014-07-08 | - |
| Conductivity sensor | SBE 4C | 4C-3054 | - | 2014-07-08 | Attached up to cast 019. |
| Conductivity sensor | SBE 4C | 4C-3873 | - | 2014-07-08 | Attached from cast 020 onwards. |
| Dissolved oxygen sensor | SBE 43 | 43-2575 | SBE 43 | 2014-04-10 | - |
| Altimeter | Benthos PSA 916T | 59493 | Benthos Altimeter | - | - |
| Irradiance sensor (DWIRR) | Biospherical QCP Cosine PAR sensor | 70520 | Biospherical QCP PAR sensor | 2015-01-06 | Measuring downwelling irradiance |
| Irradiance sensor (UWIRR) | Biospherical QCP Cosine PAR sensor | 70510 | - | 2015-01-06 | Measuring upwelling irradiance |
| Light scattering sensor | WETLabs BBRTD | BBRTD-1055 | WETLabs BBRTD | 2013-03-13 | - |
| Fluorometer | Chelsea MKIII Aquatracka | 88-2615-124 | Chelsea MKII Aquatracka | 2015-01-21 | - |
| Transmissometer | Chelsea MKII Alphatracka - 25 cm path | 161048 | Alphatracka MKII | 2012-07-24 | - |
| LADCP | Teledyne Workhorse Monitor 300 Khz LADCP | 15288 | Workhorse Monitor LADCP | - | - |
