AQUAlogger® 210TY

Turbidity, temperature, pressure - to 4000m

Ideal for dredge monitoring and water quality studies

The AQUAlogger 210TY has been superseded by the more advanced AQUAlogger 310TY turbidity logger.

Find out more about the new instrument today!

If you have any queries relating to the AQUAlogger 210TY, please contact the Aquatec team at This email address is being protected from spambots. You need JavaScript enabled to view it. or +44 (0) 1256 416010.

The AQUAlogger® 210TY is a compact instrument capable of monitoring turbidity, and optionally temperature and/or water pressure at up to 4000 m water depth. The 210 series of data loggers incorporates a replaceable battery providing life expectancy of up to 1 year within a durable housing.

The AQUAtalk software application provides an intuitive and user-friendly software interface for deployment configuration, uploading of data, and quick report generation. New for 2016 is the SSC Converter, which is included as standard in the AQUAtalk package and allows users to convert their turbidity readings to suspended sediment concentration (SSC) with ease.


  • Oceanographic and environmental research
  • Monitoring dredge plumes
  • Silt monitoring for hydropower plants
  • Water quality monitoring for EIA and aquaculture
  • Turbidity monitoring during construction
SSC Converter

Reliable sensing

  • Each sensor is individually calibrated and each logger verified by our expert team.
  • Aquatec offer an annual service and validation/calibration plan, to ensure continuity of reliable data and renewal of your warranty.
  • The logger can also be supplied with pressure and temperature sensors, enhancing your understanding of the environment.

Optimising your measurements

  • Using our established AQUAtalk software, you can choose your sampling intervals, whether to continuously or burst sample, and whether or not to average data.
  • The fixed and auto gain options in each sensor mean you don’t have to compromise on your measurement range. If you want to focus on a particular turbidity range, choose the most suitable fixed gain. If you want to capture a wider range of variability, select the autogain function, and let the instrument choose the most appropriate option for each burst of samples.

Flexible deployment

  • With a standard depth rating of 1000m, the AQUAlogger 210TY is ideal for a wide variety of deployments, including rivers, lakes, estuaries, coasts and oceans.
  • The sensor takes its readings within 5cm of the optical window, reducing the possibility for interference. Our cabled sensor option increases the possibilities for deploying in tight spaces.
  • Aquatec’s reliable data logging system means long-term unattended deployments are now possible. External battery packs can extend your deployment even further, allowing for higher frequency sampling.

Concerned about biofouling?

  • Add on a field-proven Zebra-Tech hydrowiper to mechanically clean the optical sensing window

Need to view your data in real time?

  • All instruments have real time reporting capability as standard. Aquatec can design a system suited to your project requirements, whether it includes subsea communications, buoys or frames, with all data accessible via a secure website.

Ready to use

  • We provide everything you need to get started. Each AQUAlogger 210TY is supplied with a USB cable, software, dummy connector, spare battery, maintenance kit, transit case, manual, and warranty and calibration certificates.

Need suspended sediment concentration?

  • The AQUAlogger® 210TY measures turbidity in FTU, which can be converted to suspended sediment concentration using collected in-situ samples or laboratory analysis in the new SSC Converter within AQUAtalk.

Sensor specification



Light Source Wavelength

880 nm

Scatterance Angles

15 – 150 degrees

Measurement Range











Sensor type


Piezo-resistive bridge


-2 to 30°C standard, other ranges on request

5 bar (~40m), 11 bar (~100m), 51 bar (~500m), 101 bar (~1000m), 201 bar (~2000m), 401 bar (~4000m)
(Other sensors available on request)


better than 0.007°C

better than 0.01% full scale



typically better than 0.2% full scale

Time constant

better than 5 seconds to 63% of the change in value


Logger specification

Data storage capacity

Greater than 4M parameter readings, in non-volatile FLASH

Logging lifetime

Depends on logging parameters - up to 1 year

Data retention

>10 years

Burst sampling

Bursts every 1 – 255 seconds or 1 – 255 minutes

Within-burst rate

From 1 Hz to once every 30 seconds

Burst averaging

Bursts may be averaged to a single data value


RS232 or RS422 (specify) and USB 1.1, bus powered

Optional extra inputs

2 channels 0-5V external

Optional controls

External trigger input or output


3 x 3.6V Custom Lithium ‘AA’ cell pack


AQUAtalk for Windows for configuration and download


Single attachment through mounting hole or use clamp

Maximum depth

1000m standard version (acetal)
4000m deepwater version (stainless steel)

Now included as standard in the AQUAtalk software package is the SSC converter – you can convert your turbidity readings to suspended sediment concentration (SSC) with ease. The conversion can be applied pre or post deployment via one of three methods: ‘Measure’, ‘Calculate’ or ‘Coefficients’.


By using collected in-situ samples or carrying out laboratory analysis, you can select the ‘Calculate’ or ‘Measure’ methods and let the software do the work. Alternatively, previous conversion coefficients can be easily applied using the ‘Coefficients’ method. The transparent process allows you to keep accurate records of conversions and continually add samples to increase the accuracy.


If you have solutions with known suspended sediment concentrations and need to measure the turbidity, you can use the ‘Measure’ method. The turbidity of samples can be measured by the logger and their corresponding concentrations added for up to 50 samples. You can then select the most appropriate conversion and apply to existing or future datasets. The software gives the option of saving the conversion for future use, or adding further samples as they become available.


If you have carried out previous analyses or want to use in situ data, the ‘Calculate’ method can be used. Known turbidity values and their corresponding concentrations can be manually added, before selecting a suitable conversion and applying to existing or future datasets. The software gives the option of saving the conversion for future use.


If you have previously carried out a conversion and have the coefficients available, they can be manually entered into the software and applied. The SSC Converter allows you to save a record of your conversion for future use. If you want to use the same conversion again, you can simply input or load the data from the record and apply it to your logger.

For customers with AQUAlogger 210TY instruments, please contact the sales team to discuss upgrading to the latest software package with the SSC Converter.

This email address is being protected from spambots. You need JavaScript enabled to view it.          +44 (0) 1256 416010

Q: I want to measure temperature against depth in metres.

A: A conversion from pressure to depth is now standard for AQUAlogger® 210TY instruments.

Q: How many parameters can I measure at one time?

A: The standard parameters offered for the instruments are turbidity, pressure and temperature. A larger range of parameters are available as custom instruments.  

Q: How long do the batteries last?

A: A battery life calculator is available for the instrument. Prior to purchase, we can help you plan your deployment and calculate your battery requirements. External batteries are available for long deployments.

Q: How can I prevent biofouling of the optical sensor?

A: An automated wiper can be supplied with the instrument to reduce the impact of biofouling.

Q: Does the wiper run on the main battery, shortening the logger’s battery life?

A: The wiper has its own battery and will not impact on the battery life of the logger.

Q: Can we replace the batteries ourselves?

A: The batteries are technician replaceable. A spare battery is supplied with the instrument and further batteries are available on request. Please note, your warranty will be void for leaks if the instrument is opened. A battery change is offered as standard in an annual service.

Q: We need to trigger a machinery shutdown if the turbidity levels get to high – can this be done with the 210TY?

A: We can provide alarmed real time systems – please contact us for an initial consultation.

Q: How should I site the instrument?

A: We can provide advice on deploying your instrument – please contact us with details of your project.

Q: Does sunlight affect the turbidity readings?

A: Sunlight can affect turbidity readings. We can provide advice on deploying your instrument – please contact us with details of your project.

Q: Over what distance can I measure data in real time?

A: The distance will depend on the specifics of your project. Please contact us with details for an initial consultation.