Multiparameter Probe CTD 48

The CTD48 is a high quality, high accuracy 4 channel online probe for oceanographic and limnological measurement of conductivity, temperature, depth and one optional parameter for depth up to 6000 m.

Standard models:
CTD48:
Online probe for measurement of conductivity, pressure, temperature + 1 optional sensor

Standard sensors:

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

Additional sensors:

  • Dissolved Oxygen
  • Turbidity
  • pH
  • Redox (OPR)

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SKU: 3010000 Categories: ,

Description

The NEW CTD48c / CTD48Mc probes are very small and handy microprocessor controlled Multiparameter Probes for precise online measurements as well as for self-contained operation in deep and shallow water. The difference between the new CTD48c / CTD48Mc and the previous version are:

– new powerful controller
– larger memory for storing data
– calibration coefficients stored inside the probe
– output of calculated / physical data
– more and powerful interfaces
– with rechargeable batteries available ( probe must not be opened )

Due to its small size and low weight of 1.2 kg, it is particularly suited for the mounting on ROVs and bottom landers. The probe is completely made of titanium (except the screws). The housing is inert against nearly all chemical compounds and absolutely corrosion free.Due to the small housing diameter of 48 mm (including sensor protection tube) the probe can also be used for profiling in 2” boreholes.
The standard CTD48Mc allows operation in different modes:

– Time mode
– Increment mode
– Continuous mode
– RS232, FSK or Ethernet in online mode
– fast readout of stored data via USB

Time mode is the most important mode for long term measurements, where the operator selects start and stop time and the measuring time interval. Increment mode is mainly used during profiling and enables the user to carry out a great number of profiles with data reduction and without the need to upload stored data file after each measured profile.

The user selects start and end depth and increment size. The probe then stores automatically a complete data set at each increment depth.

The CTD48Mc is equipped with an 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.


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Additional information

Max. Depth

50 m, 100 m, 200 m, 500 m, 2000 m, 4000 m, 6000 m

Field of Application

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

Measuring mode

Online

Special functions

borehole probe

Conductivity

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

Temperature PT100

From -2 – 36°C, From -2 – 60 °C

pH

H2S resistant, Standard

Redox

H2S resistant, standard

Oxygen

CLARK

Turbidity

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

Special sensors

Current meter, H2S

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