idronaut Ocean Seven 304Plus, Руководство оператора

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SECTION ONE
–
SYSTEM DESCRIPTION
IDRONAUT – Brugherio (MB) OCEAN SEVEN 304 Plus CTD 12-2015
8
Main Menu
1 - Acquisition
2 - Memory
management
3 - Calibration
4 - Service
5 - Change operating
mode
Memory Management
1 – Memory status
2 – Show stored data
3 – Delete cast
4 - Initialize
Service
1 – Setup
2 – RTC
3 – Raw Counts
4 - Raw mV
5 - Rights
6 - Firmware
7 - Diagnostic
Diagnostics
1 - GPL
2 - FRAM
3 - EERPROM
4 - SCARD
5 - ADC-12bit
6 - Term
7 - Timing
8 - Battery
Data Acquisition
1 – Real time
2 – Pressure
3 – Timed
4 – Continuous
5 – Conditioned
6 – Burst
1.10.10. Menu & submenu structure
1.11. CALCULATIONS
The fundamental properties of seawater, like: Salinity, Sound Speed, Water Density , Oxygen ppm
and pressure to depth conversion 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". The freshwater properties like:
TDS (Total Dissolved Solids), Fresh Water Conductivity
corrected at 20°C and 25°C are automatically calculated.
1.11.2. Conductivity compensated at 20°C
As reported in the Ambühl formula, the conductivity is compensated with the following calculation:
K = a - b x temp + c x temp
2
- d x temp
3
cond 20o C = cond x K
Where:
cond = conductivity sensor output a =
1.721183 c = 0.0011484224
temp = temperature sensor output b = 0.05413696 d = 0.00001226563