CTD115
Online probe
The CTD115 is a high quality, high accuracy online multiparameter probe with max. 11 sensors of the bottom cap for oceanographic and limnological measurement of physical, chemical and optical parameters for depth up to 500 m.
Sea & Sun Technology
Trappenkamp, DE
Description
The CTD115 is a high quality, high accuracy online multi parameter probe
with max. 11 sensors for oceanographic and limnological measurement of physical, chemical and optical parameters up to a depth of 500m.
The probe allows operation in different modes:
- online mode (RS-23C): it will automatically transmit data on the RS-232 line as soon as the probe is powered and the appropiate port is activated.
- online mode (FSK-option). Operation on single conductor cables (coaxial cables) requires a special power supply interface with a FSK demodulation circuitry.
PC is connected to the interface either by COM port or USB 2.0 port.
The CTD115 is equipped with a 16 channel data aquisition system with 16 bit resolution.
A high long-time stability and automatic self-calibration of the analogue digital converter guarantees stable and precise CTD measurements for many years.
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:
CTD115:
Online probe for measurement of conductivity, depth, temperature + 8 optional sensors
Standard sensors:
- Conductivity (Š”)
- Temperature (T)
- Pressure (D)
Additional sensors:
- Oxygen
- Turbidity
- pH (also H2S-resistant)
- Redox (OPR) also H2S-resistant
- Fluorometer
- Light irradiance(PAR)
- Transmissiometer
- Altimeter
- H2S (hydrogen sulfid)
- Currentmeter (with compass)
Calculated parameters:
- salinity
- sound velocity
- Kappa 25 mS/cm
- sigma
Main Features:
- easy handling
- up to 11 sensors
- non-corrosive titanium housing (titanium)
- depth range up to 500m
- control and operation of water samplers and plancton nets
- SDA data acquisition software running under various versions of Microsoft Windows
(a part of the shipment) - calculations according to UNESCO formulas
Specifications
-
General
-
Weight in air [kg]
9
Diameter [mm]
115
Length [mm]
680
Housing Material
Titanium
Max. cable length [m]
500
-
Observations
-
Min. depth increment [m]
0.1
Min. time increment [s]
0.2
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]
0.01
Uncertainty of sound velocity [m/s]
0.02
-
Operation Characteristics
-
Data display on dedicated hardware
N
Method of first recording
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
Uncertainty of pressure [% FS]
130
Accuracy of pressure sensor
0.05
Temperature sensor
Y
Type of temperature sensor
Pt 100 4-pole
Min. temperature [Ā°C]
-2
Max. temperature [Ā°C]
36
Resolution of temperature [Ā°C]
0.0005
Accuracy of temperature measurement
Ā± 0.002
Conductivity sensor
Y
Type of conductivity sensor
7-pole-cell
Max. conductivity [S/m]
7
Resolution of conductivity [10^-3 S/m]
0.0005
Accuracy of conductivity measurement
Ā± 0.002
-
Software specifications
-
Software name
SST-SDA
Graphical presentation
Y
Re-computation with raw data
Y
CTD Probe controller
Y
Recording with third party software
N
-
Environmental
-
Max. depth [m]
500
Max. pressure [bar]
50
Operating temperature: min. [Ā°C]
-10
Operating temperature: max. [Ā°C]
60
-
Data and connectivity
-
Direct data reading
Y
Connectors
RS232
Internal memory
N
Dedicated surface data logger
Y
-
Power
-
Min. operating power [V]
9
Max. operating power [V]
30
Battery
N
-
Additonal sensors
-
Standard sensor
pressure, temperature, conductivity
No. of additional sensors
8
Description of additional sensors
dissolved oxygen, optical oxygen (SST-DO), pH, Redox, fluorescense, PAR, currentmeter, turbidity, H2S, transmissiometer, altimeter
