CTD 115M

CTD 115M

The CTD115M is a high quality, high accuracy online and memory multi parameter probe with max. 11 sensors for oceanographic and limnological measurement of physical, chemical and optical parameters for depth up to 500 m.

Standard models:

CTD115M:
Online probe for measurement of conductivity, pressure, temperature + 8 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)

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SKU: 00002286 Category:

Description

Multiparameter probe CTD115M

The CTD115M is a high quality, high accuracy online and memory multi parameter probe with max. 11 sensors for oceanographic and limnologic measurement of physical, chemical and optical parameters up to a depth of 500 m.

Data are stored in a standard flash memory card with a capacity limited to 128 Mbytes by the internal firmware. Up to 3 000 000 CTD data sets can be recorded on this memory. The actual number depends on the selected storage options and the number of sensors adapted to the probe.

The CTD115M allows operation in different modes:

  • Continuous mode: each data set is stored.
  • Time mode: data sets are stored only at programmable intervals with several selectable schemes.
  • Pressure mode: data sets are stored at programmable depth stamps.
  • Online mode (RS-232).

The CTD115M is equipped with a 16 channel data aquisition system with 16 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 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 power supply of the probe is activated by touching a reed contact with a magnetic rod, LED displays power supply status and optical control of memory access.

Standard models:
CTD115M:
Online probe for measurement of conductivity, pressure, temperature + 8 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 11 sensors
  • non-corrosive titanium housing (titanium)
  • depth range up to 500 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 100 m, up to 1000 m, up to 200 m, up to 2000 m, up to 50 m, up to 500 m

Field of Application

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

Measuring mode

Memory, Online

Special functions

probe with / for water sampler

Temperature PT100

From -2 – 36°C, From -2 – 60 °C

Conductivity

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

Turbidity

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

Oxygen

CLARK, Optical

pH

H2S resistant, Standard

Redox

H2S resistant, standard

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 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. It is also used to configure and readout the data memory.

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 5m.

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 for all probes in online or memory mode.

  • Power: 9…30V DC
  • Power consumption: approx. 0,5 W (sensor-dependent) 
  • Serial port: RS-232 (optional FSK)
  • Port specifications : 2400,o,8,1
  • Data transmission : 5 CTD sets/s
  • Connector: SUBCONN MCBH8M Ti

Material:

  • Housing: titanium, grade 2 
  • Connector: titanium, neoprene

Dimensions and Weights

  • Length (housing): 410 mm
  • Length (protection frame): 114 mm
  • Length (overall with connector): approx. 680 mm
  • Weight (in air): approx. 9 kg
  • Robust plastic case
  • CTD115M
  • Probe user manual
  • Software manual SST-SDA
  • Calibration documents
  • Software
  • Shackle
  • Batteries
  • Hexagon key with t-shaped plastic handle
  • Dummy cap with locking sleeve
  • Configuration cable (5m)
  • USB cable
  • Magnetic rod
  • RS232 to USB converter
  • O-rings
  • Titanium screws
  • Silicon grease
  • 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