CTD 90

CTD 90

The CTD90 is a high quality, high accuracy online multi parameter probe with max. 9 sensors for oceanographic and limnological measurement of physical, chemical and optical parameters for depth up to 6000 m.

Standard models:
CTD90:
Online probe for measurement of conductivity, depth, temperature + 6 optional sensors

Standard sensors:

  • Conductivity (С)
  • 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)

>> View detailed description

>> Show datasheet here

SKU: 30500011 Category:

Description

Multiparameter probe CTD90

The CTD90 is a high quality, high accuracy online multi parameter probe with max. 9 sensors for oceanographic and limnological measurement of physical, chemical and optical parameters for depth up to 6000 m.

The probe allows operation in different modes:

  • online mode (RS-232): 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 CTD90 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.

The system is able to control and operate motor driven water-sampler rosettes (e.g. from Hydro-Bios).

Standard models:
CTD90:
Online probe for measurement of conductivity, depth, temperature + 6 optional sensors

Standard sensors:

  • Conductivity (С)
  • 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 9 sensors
  • non-corrosive titanium housing (titanium)
  • depth range up to 6000 m
  • 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
ten year warranty

Additional information

Max. Depth

up to 50 m, up to 100 m, up to 200 m, up to 500 m, up to 1000 m, up to 2000 m, up to 4000 m, up to 6000 m

Field of Application

Brackwater, Drinking water, Ground water, Fresh water, Salt water, Offshore

Measuring mode

Online

Special functions

probe with / for water sampler

Conductivity

0 – 10 ms/cm, 0 – 70 ms/cm, 0 – 300 ms/cm

Temperature PT100

From -2 – 36°C, From -2 – 60 °C

Redox

H2S resistant, standard

Oxygen

CLARK, Optical

pH

H2S resistant, Standard

Turbidity

0 – 25 ftu/ntu, 0 – 125 ftu/ntu, 0 – 500 ftu/ntu, 0 – 4000 ftu/ntu

Fluorometer

CDOM/FDOM, Chlorophyll A, Crude Oil, Fluorescein, Optical Brighteners, Phycocyanin, Phycoerythrin, PTSA, Refined Fuels, Rhodamine, Tryptophan

Light irradiance

BI QCP2300, BI QSP2200, Li-Cor 192SA, Li_Cor 193SA, Satlantic PAR

Special sensors

Acceleration, Altimeter, Bottom indicator, CO2, Compass, Current meter, H2S, Transmission

The data transfer and the power supply of the probes over longer cables (up to 6000 m) is carried out when using multi-conductor cables (at least 4-wire) via a serial interface (RS-485) or when using a “single-conductor cable” (steel cable with internal conductor) via the FSK- Interface (Freqency Shift Keying).

For shorter cable lengths (up to 500 m) the RS-232 interface can be used.

If the probe is equipped with a USB interface, it is recommended to read the stored data via this interface, since a shorter read-out time can be achieved. The cable length of the USB interface should not be longer than 5 m.

The probes are provided with a program (SDA) for the configuration, readout of stored data, numerical and graphical representation of the data and storage of data.

  • Power: 10…30V DC
  • Power consumption: approx. 0,5 W (sensor-dependent) mA
  • Serial port: RS-232 (optional FSK)
  • Port specifications : 2400 (1200, 4800, 9600),o,8,1
  • Data transmission : 5 CTD sets/s
  • Connector: SUBCONN MCBH4M Ti

Material:

  • Housing: titanium, grade 2 (up to 2000 m); titanium, grade 5 (up to 6000 m)
  • Connector: titanium, neoprene

Dimensions and Weights

  • Length (housing): 410 mm
  • Length (protection frame): 190 mm
  • Length (overall with connector): approx. 600 mm
  • Diameter (housing): 90 mm
  • Weight (in air): approx. 6 kg
  • Robust plastic case
  • CTD90
  • Probe user manual
  • Software manual SST-SDA
  • Calibration documents
  • Software
  • Shackle
  • Dummy cap with locking sleeve
  • Configuration cable (5m)
  • RS-232 to USB converter
  • O-rings
  • Quick start guide

We offer calibration of several probes and sensors

  • Pressure (dead weight tester)
  • Temperature: Millikelvin Thermometer Pt 100 (ITS 90, IEC 751)
  • Conductivity: Salinometer, Guildline Autosal 8400B / Portasal 8410A (standard sea water)
  • pH / Redox (buffer solutions)
  • Oxygen