12 reviews

NEMOSENSELow-noise vibration data logger and IoT device

NEMOSENSE is a tailor-made IoT device that combines a vibration data acquisition device, a data logger, and a low-noise triaxial MEMS accelerometer. It is an ideal vibration monitoring solution for permanent condition monitoring of wind turbines and structures such as bridges, buildings, antennas, and stadiums. It offers a great price-performance ratio.

1 kS/s/ch

1 kS/s/ch

-20°C to +60°C

-20°C to +60°C









SD card

SD card



NEMOSENSE highlights

All-in-one data logger

NEMOSENSE is a data logger and data acquisition device with an embedded low-noise triaxial MEMS accelerometer. It performs the analog-to-digital conversion and offers an ethernet TCP/IP data interface.

Onboard processing

NEMOSENSE includes a small microprocessor. This allows setting up and calculating simple calculations like FFT's, RMS, P-P, and other statistical caluclations directly onboard.

Low noise density

The NEMOSENSE data loggers have a very very low noise performance of 25 μg√Hz spectral noise density at the 2g measurement range.

Internal storage

NEMOSENSE devices have 16 GB of internal storage memory and can save up to 1 month of measured data at 125 S/s.

NTP synchronization

NEMOSENSE devices that are connected on the same network are synchronized within 10 ms using NTP synchronization (Network Time Protocol).

Great price/performance

The NEMOSENSE offers a good price vs. performance ratio and is thus perfect for system integrators, and large continuous monitoring installations.

Waterproof enclosure

NEMOSENS enclosure is fully waterproof with Harting push-pull RJ45 connector. It offers IP67 environmental protection.

Dewesoft quality and 7-year warranty

Enjoy our industry-leading 7-year warranty. Our data acquisition systems are made in Europe, utilizing only the highest build quality standards. We offer free and customer-focused technical support. Your investment into the Dewesoft solutions is protected for years ahead.

NEMOSENSE device overview

NEMOSENSE-3xMEMS-ACC is a low-power IoT device with an integrated triaxial MEMS accelerometer. It acquires the data and stores it on an internal SD card. Data is stored in CSV file format and transmitted to the server, using the MQTT protocol, when the connection is available.

Analog-to-digital conversion is done on the device with the onboard ADC converter. This eliminates any noise picked up in analog cabling.

The onboard microprocessor is used to perform simple processing tasks such as FFT and basic statistics (Min, Max, Average, RMS). This eliminates the need for an expensive external computer.

NEMOSENSE connectivity

NEMOSENSE is built as an Ethernet TCP/IP device. It can be connected to an existing TCP/IP network to send the data to the Dewesoft Historian service - a time-series database, for long-term data storage. If the wired-ethernet network is not available, an external 4G/5G modem can be used for the data transfer.

In parallel to web clients, the data can also be accessed and analyzed by an instance of award-winning DewesoftX software, typically running on a client PC in an engineering office. The DewesoftX view client includes two modules:

  • The MQTT client: MQTT client operates in DewesoftX’s measure mode and has the role of displaying live data from the measurement units.

  • The Historian importer: The Historian Importer plugin operates in DewesoftX Analysis mode and allows the data from a chosen time frame to be loaded into a DewesoftX data file for further in-depth analysis and reporting.

Device architecture

NEMOSENSE-3xMEMS-ACC is an Ethernet device and can be easily connected to an existing TCP/IP network. The MQTT Client is running onboard sending the data to the MQTT broker, a Dewesoft Historian component, installed on the server side.

Dewesoft Historian is a central point where data from NEMOSENSE devices, Dewesoft Measurement Units, and 3rd party MQTT clients is merged and stored into the same InfluxDB time-series database.

The data stored in the database can be accessed using a web browser (Grafana) or DewesoftX software.

Seismic noise performance

With only 25 µg/√Hz spectral noise density and 100 µg residual noise at 50 Hz bandwidth, the NEMOSENSE-3xMEMS-ACC device is a cost-effective solution for seismic measurements.

The FFT recorder on the image shows the residual noise of the three axes measured with an integrated accelerometer at the sample rate of 100 S/s resulting in a 96 dB dynamic range.

Product testing and validation

Hardware repairs or replacements are expensive on structures such as bridges. Therefore NEMOSENSE-3xMEMS-ACC was put through in-depth product validation tests that ensure reliable operation within its specifications.

Standard testing procedures include vibration and temperature cycle tests to check the durability and specify drifts in measured acceleration.

Historian database storing

NEMOSENSE dataloggers can be installed for long-term or permanent monitoring. This kind of measurement requires efficient data storage. For that, we provide Dewesoft Historian service. The Historian is a time-series database service based on the MQTT messaging protocol for the Internet of Things (IoT).

The Historian is based on an open-source InfluxDB database and is a perfect solution for long-term monitoring. Data in the Historian can be accessed in two ways:

  1. Web clients: any modern web browser can be used as a web client to access real-time data stored in the Historian. The solution is based on another open-source project Grafana. It allows to set up of completely customized views and is a perfect solution for real-time dashboards.

  2. Desktop client: the desktop client is an instance of our award-winning DewesoftX software. It allows you to import historical data from the Historian database for in-depth analysis.

The Historian is available to be installed on your own server (Windows, Linux, Mac OS) or as a completely managed cloud service.

Visit the Dewesoft Historian web page for more information.

Permanent outdoor mounting

NEMOSENSE-3xMEMS-ACC devices are supplied in a waterproof aluminum casing with RJ45 Harting push-pull connector. The enclosure is designed to be mounted outdoors and is fully waterproof and complies with IP67 environmental rating.

The outdoor enclosure automatically vents the air to equalize pressure inside the enclosure to the outside air pressure while it does not allow water to pass into the enclosure. This prolongs the life span of the seal and increases the durability of the enclosure.


NEMOSENSE-3xMEMS-ACC devices are designed for tailor-made structural health monitoring solutions and seismic monitoring solutions and are thus ideal for permanent health condition monitoring on big structures such as:

  • Wind turbines

  • Bridges

  • Buildings

  • Dams

  • Antennas

  • Stadiums

  • Structures in mines

FAQFrequently asked questions

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