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Table T2. Summary table detailing the sensor specifications, resolution, and accuracy for the Conductivity, Temperature, and Depth (CTD) YSI 6600 V2-4 sonde used during Expedition 325. (See table note.)
|
Sensor
|
Range
|
Resolution
|
Accuracy
|
|
Conductivity 6560 sensor (mS/cm)
|
0–100
|
0.001–0.1 (range dependent)
|
±0.5% of reading + 0.00
|
|
Salinity (ppt)
|
0–70
|
0.01
|
±1% of reading or 0.1, whichever is greater
|
|
Temperature 6560 sensor (°C)
|
–5 to +60
|
0.01
|
±0.15
|
|
Depth (m)
|
|
Deep
|
0–200
|
0.001
|
±0.3
|
|
Medium
|
0–61
|
0.001
|
±0.12
|
|
Shallow
|
0–9.1
|
0.001
|
±0.02
|
|
Vented level
|
0–9.1
|
0.001
|
±0.018
|
|
Turbidity 6136 sensor (NTU)
|
0–1.000
|
0.1
|
±2% of reading or 0.3, whichever is greater
|
|
Chlorophyll 6025 sensor (µg/L Chl)
|
~0–400
|
~0.1
|
0.1
|
|
pH 6561 sensor (unit)
|
0–14
|
0.01
|
±0.2
|
|
ROX optical dissolved oxygen % saturation
|
0–500
|
0.1
|
0–200: ±1 of reading or 1of air saturation, whichever is greater
|
|
BGA—Phycocyanin (cell/mL)
|
~0–200,000
|
~160
|
1 cell/mL
|
Note: NTU = nephelometric turbidity units, Chl = chlorophyll, ROX = luminescent dissolved oxygen sensor, BGA = blue-green algae.
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