Multiparameter probes

MULTIPARAMETER PROBES | UNDERWATER LOGGERS | SPECIFIC PARAMETERS

nke Instrumentation develops, manufactures and sells autonomous monitoring station to monitor and control water quality. The autonomous multiparameter probes are equipped with brush and teletransmission and use a wiper to protect optical sensors from biofouling. The probes measure and record the main physicochemical water parameters – the user can choose up to 7 parameters and it benefits from a fast wireless configuration thanks to a communication interface connected to the USB port of a PC. The multiparameter probes are operational as they can be adapted on multiple supports among them buoys, ladder, stake, pontoon.

WiMo: multiparameter sonde – new generation

WiMo: multiparameter sonde – new generation

Description - The new generation of nke multiparameter sonde is the WiMo sonde. Two versions of the sonde are available: the WiMo with four locations and the WiMo Plus with seven locations. The WiMo sonde allows you to measure up to 20 parameters thanks to its smart sensors suite that benefit from real plug and play and automatic recognition as you can connect and disconnect the smart and digital sensors even with functioning sonde.

The WiMo sonde can be used manually to record profiles or via a transmission module that allows a long-term monitoring. It is also possible to plug a wiper for an active anti-fouling system. The sonde is integrable on any platforms such as floats, buoys, AUVs, ROVs, profiling buoys or even more complicated platforms. Therefore the sonde benefits from a strong robustness to be deployed whether in sea environment or freshwater applications.

One of the main advantages of this WiMo sonde is its ease of use and user-friendly web embedded interface compatible with all kinds of devices. The key feature of the WiMo sonde is its easiness as you can connect, disconnect the sensors whenever and wherever you need. Transmission of data won’t have any secrets for you as it has a wide range of autonomous communication modules.

As there are two embedded sensors – temperature and water pressure – you can use the sonde as a data logger without any sensors as a wave and tide underwater logger.

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WiMo Plus

WiMo Plus

Description - The WiMo Plus has seven locations to embed sensors and allows you to measure up to 20 parameters synchronously thanks to its smart sensors suite that benefit from real plug and play and automatic recognition as you can connect and disconnect the smart and digital sensors even with functioning sonde.

The sonde is integrable on any platforms such as floats, buoys, AUVs, ROVs, profiling buoys or even more complicated platforms. Therefore the sonde benefits from a strong robustness to be deployed whether in sea environment or freshwater applications.

One of the main advantages of this WiMo sonde is its ease of use and user-friendly web embedded interface compatible with all kinds of devices. The key feature of the WiMo sonde is its easiness as you can connect, disconnect and also calibrate the sensors whenever and wherever you need. Transmission of data won’t have any secrets for you as it has a wide range of autonomous communication modules.

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Transmission module

Transmission module

Description - The 3G/4G modem enables the WiMo multiparameter probe range to transmit its data using the deployed 3G/4G networks. The modem is multi-operator and can use French and foreign networks.

Once connected to the probe, the modem is automatically detected via the probe on the interface in order to configure it. The modem retrieves the different files acquired by the probe and transmits them at the rate defined by the user.

It has a GPS and can use it to transmit its position via the 3G/4G network. It can be configured by the user to manage a turning radius with alarm transmission if the buoy goes out of this radius.

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CT Sensor – Conductivity and Temperature

CT Sensor – Conductivity and Temperature

Description - The sensor combines two parameters: conductivity measurement and temperature measurement. The conductivity measurement is carried out by a 4 carbon electrodes cell. The advantage of the 4-electrode measuring cell is its relative insensitivity to parasitic resistances, dirt or polarization.

The temperature measurement is carried out by a thermistor which guarantees a fast response to a temperature step and a good stability over time.

This sensor gives access to calculated parameters. It is indeed possible to determine salinity, specific conductivity, sound velocity, total dissolved solids or chlorides.

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TBD Sensor – Turbidity

TBD Sensor – Turbidity

Description - The turbidity sensor of the WiMo probe is based on the method of measuring diffuse radiation (nephelometry) meeting the ISO 7027 standard. The illumination is performed in the near infrared with a 90° detection of the emission angle.

By default, the unit used is the FN (Formazin Nephelometric Unit). This is inherent to the standards used however it is quite possible for the user to change the unit to NTU, but he needs to be sure that the appropriate correlation is made.

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DO Sensor – Dissolved Oxygen

DO Sensor – Dissolved Oxygen

Description - The oxygen sensor measures the dissolved oxygen in the water. The measuring principle is optical. It is based on an LED that excites an oxygen-reactive membrane and detects its oxygen-dependent luminescence emission by means of a photodiode. The excitation and emission light is transmitted by an optical fiber between the sensor and the reactive membrane.

The sensor has its own temperature sensor to allow automatic temperature-dependent compensation of the oxygen measurement.

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Fluorescence Sensor – Chlorophyll a

Fluorescence Sensor – Chlorophyll a

Description - Chlorophyll a measurement is used as an indicator of phytoplankton biomass in natural waters. Chlorophyll is a fluorescent molecule that can be quantified using a fluorimeter.

The system uses two beams: an emission beam at a given wavelength and a reception beam that measures fluorescence. To avoid interference from the emission beam, the reception is made at 90 degrees from the emission beam.

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pH Sensor

pH Sensor

Description - The pH sensor is used to measure the acidity or basicity of a solution. The pH of pure water at 25°C, which is equal to 7, has been chosen as the reference value for a neutral medium.

If the measured solutions have a pH value below 7, they are said to be acidic. The acidity of the solution increases as the pH decreases. Conversely, if the measured solutions have a pH above 7, they are said to be basic. The basicity of the solution increases with the pH.

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Wiper

Wiper

Description - It is possible to add a cleaning device to the WiMo and WiMo Plus probes. This is an intelligent wiper that self-configures itself according to the sensors that are connected to the probe. It automatically detects whether the sensors need or can be cleaned and adapts its scan accordingly.

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CTSens-UV: remote CT sensor with UV anti-fouling kit for long-term submersion

CTSens-UV: remote CT sensor with UV anti-fouling kit for long-term submersion

Description - The CTSens-UV completes our existing range of WiMo multiparameter sondes by being a more compact system with an integrated UV anti-fouling kit. It is developed for long-term static salinity monitoring in fresh and saline environments.

The CTSens-UV is made of a CT sensor is a smart sensor meaning that it can be connected and disconnected without any tools and without requiring any hardware or software manipulations and it holds its own calibration values.

The UV-anti-fouling is known as the most efficient and ecofriendly anti fouling existing as it has the advantage of performing for a very long time without impacting the quality of the measurement in the area and throughout time.

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