If the power consumption is less than 2 W, battery operation for months is possible, with no cable to the shore. With the data storage on board, this gives the operating case: put the instrument into the water, leave it there, read out the data later.
Environmental · Under water
ENVIRO NAUTA
In-situ gamma spectrometry in fresh water and sea water. The measuring instrument measures in the water, with no sampling on land. No measurement and no data sheet confirms the data on this page.
Characteristic values
Data without proof
There is no data sheet for ENVIRO NAUTA. No measurement confirms the 4 values in the table.
| Parameter | Value |
|---|---|
| Operating depth | up to 100 m |
| Medium | Fresh water and sea water |
| Data storage on board | up to 5 years |
| Power consumption | less than 2 W |
The conditions for these values are not documented: water temperature, sampling rate and detector type. Under water, detection limits change much with the location. Thus this page gives no detection limits.
Applications
Measurement series instead of a single sample
A water sample in the laboratory takes days and gives one point in time. An in-situ measurement gives a measurement series.
- Environmental monitoring Continuous measurement at a body of water, with no trips for sampling.
- Power plant surroundings Cooling water outlet and receiving water, continuous and not by spot samples.
- Research Long measurement series at the same location, with a detector for the research question.
- Harbour and coast Sea water with a higher salt load. In the laboratory, the preparation of such a sample takes much work.
Construction
Pressure housing, detector and multichannel analyser
A pressure housing with a detector of your choice and a multichannel analyser on board.
- Detector for the task Scintillators such as NaI(Tl), CsI(Tl), LaBr₃ and CeBr₃, or a semiconductor detector up to high-purity germanium. Under water, the power consumption is a reason against a cooled detector. The task sets the selection.
- Multichannel analyser on board The measuring instrument records the full spectrum, not only a count value. You can adjust the measurement parameters and the sampling interval.
- Data storage in the instrument The data storage on board can hold data for long periods in the water. Output of raw data and spectra in usual formats, Ethernet and RS485 interfaces.
- Single instrument or network For operation as a single instrument and as part of a distributed measurement network, with remote access to the measurement parameters.
The pressure housing, the material, the seal concept and the approval for sea water are not documented. We find these data for each case.
Enquiry
Enquiry and other measuring instruments
Give us the body of water and its salinity, the nuclide, the operating depth, the planned period between 2 maintenance tasks and the date.
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