CTD60Mc - ultra deep sea

Ultra deep sea probe

The CTD60Mc – ultra deep sea is a high quality, high accuracy memory probe for oceanographic measurement of conductivity, temperature, ambient pressure in depth up to 11000 m (12000 dbar) The CTD60Mc – ultra deep sea is characterised in particu¬lar by its ability to directly output physical and calculated data such as salinity, sound velocity and density

Sea & Sun Technology

Trappenkamp, DE

Description

The CTD60Mc – ultra deep sea probe is a small and handy microprocessor controlled multiparameter memory probe for oceanographic measurement with up to 3 sensors and a maximum depth down to 11000 m. It measures electric conductivity, water temperature and ambient pressure.
Data are stored in a standard flash memory with a capacity of 128 Mbytes. Up to 5,5 million CTD data sets can be recorded on this memory

Online operation
This mode is possible up to 350m via RS-232 Interface, but not recommended for this Probetyp. Only for testing.

Memory operation
The memory operation is divided into the following operation modes:

Continuous mode: each data set is stored.
Time mode: data sets are only stored at programmable intervals with several selectable schemes.
Pressure mode: data sets are stored at programmable depth steps.

The CTD60Mc – ultra deep sea is equipped with a 8 channel data acquisition system with 20 bit resolution. A high long-term stability and automatic self-calibration of the analogue digital converter guarantees stable and precise CTD measurements for many years.

The probe power supply is activated by touching a reed contact with a magnetic rod. LED displays power supply status and optical control of memory access.

The supplied Standard Data Acquisition Software package “SST-SDA” includes the handling of the logging process and the display of online or recorded data with a shared graphic user interface. The “SST-SDA” is a part of our shipment.

Standard models:
CTD60Mc – ultra deep sea:
Online and memory probe for measurement of conductivity, pressure, temperature

Standard sensors:

Conductivity (С)
Temperature (T)
Pressure (D)

Calculated parameters:

salinity
sound velocity
Kappa 25 mS/cm (electric conductivity)
sigma – t (potential density of a fluid)

Specifications

General: Year of initial development

2018

Weight in air [kg]

3

Diameter [mm]

60

Length [mm]

575

Housing Material

Titanium

Observations: Min. depth increment [m]

0.01

Min. time increment [s]

0.1

Resolution of salinity [psu]

0.001

Uncertainty of salinity [psu]

0.002

Min. sound velocity [m/s]

1400

Max. sound velocity [m/s]

1600

Resolution of sound velocity [m/s]

0.05

Uncertainty of sound velocity [m/s]

0.1

Operation Characteristics: Data display on dedicated hardware

N

Method of first recording

internal /external

Display of analogue data

Y

Pressure, temperature and conductivity sensor: Pressure sensor

Y

Type of pressure sensor

piezo resistive

Resolution of pressure [% FS]

0.002

Accuracy of pressure sensor

up to 0.05

Temperature sensor

Y

Type of temperature sensor

Pt 100 4-pole

Min. temperature [°C]

-2

Max. temperature [°C]

36

Resolution of temperature [°C]

0.0005

Accuracy of temperature measurement

0.002

Conductivity sensor

Y

Type of conductivity sensor

7-pole-cell

Max. conductivity [S/m]

70

Resolution of conductivity [10^-3 S/m]

0.0005

Accuracy of conductivity measurement

0.002

Uncertainty of pressure [% FS]

130

Software specifications: Software name

SST-SDA

Graphical presentation

Y

Raw data editing

Y

Re-computation with raw data

Y

CTD Probe controller

Y

Recording with third party software

Y

Environmental: Max. depth [m]

11000

Max. pressure [bar]

1200

Operating temperature: min. [°C]

-10

Operating temperature: max. [°C]

60

Data and connectivity: Internal memory

Y

Direct data reading

Y

Connectors

RS232

Internal Memory [MB]

16000

Type of internal memory

non-volatile memory

Max. number of samples for self-recording [10^3]

5000000000

Dedicated sub-surface data logger

Y

Dedicated surface data logger

Y

Telemetry link to remote location

Y