UB-Lab 2C - The velocity vector profiler
The UB-Lab 2C profiler allows accurate quasi-instantaneous co-located two (2C) components velocity profiles measurements from the laboratory.
Advantages
- High spatial and temporal resolution
- two components (2C) velocity profiles
- Web interface


The compact and splash-proof (IP65) enclosure of the UB-Lab 2C is adapted to harsh environments. This scientific instrument can be used within a laboratory. It breaks new ground by offering the user new capabilities in the fields of turbulence study.
The device is configured through a dynamic web interface and integrate an internal logger (3Go) which allows the storage of a large amount of data, enabling days or months of monitoring (depending on configuration).
Ethernet communication goes through RJ45 cable. The device can behave like a DHCP server when connected directly to the computer, or it can be connected to the network and behave like a DHCP client. Depending on the network configuration, connection to the device through WiFi is possible.
The UB-Lab 2C can be equipped with 1 emitting transducer and 2 couples of receiving transducers. The multi-bistatic technique provides an instantaneous two component (2C) velocity vector measurement along a single beam (1D profile) at a high spatial and temporal resolution. This technique is also known as ADVP (Acoustic Doppler Velocity Profiler).
The emitter and a pair of receivers are provided with the device, as well as the holder to ensure an optimal installation.
Measurement Performances | UB-Lab 2C |
---|---|
Sampling range |
5 to 500 mm at 1MHz |
Number of cells | 2 to 100 |
Cell size | 1.4 to 20 mm |
Velocity Range |
see Nyquist conditions. Example of average velocity ranges for turbulence intensities of 8%:
|
Velocity accuracy | 0.2 to 1% |
Velocity resolution | 0.1 ppm (floating point representation with 7 significant digits) |
Sampling rates | up to 100 Hz * |
Signal Processing | Coherent Doppler with phase coding |
Number of configurations | 5 |
Raw acoustic signal | no |
Trigger IN/OUT | 1 BNC connector |
Temperature | 1 BNC connector for 2 wires PT100 probe |
Pressure | no |
Acoustics | |
Measurement modus | bistatic |
Number of transducer connectors | 5 (1 in emission and 1 or 2 pairs reception) |
Type of transducer connectors | BNC |
Frequency range | 0.8 to 1.2 MHz |
Beam width | around 3° half angle depending on the emitting frequency |
Emission voltage | 30/60V |
Physical | |
Dimensions | 5.5 x 11.3 x 38.5 cm |
Weight | 1.5 kg |
Cable | 10 m typical (up to 50 m upon request) |
Data Management | |
Communication | HTTP and TCP-IP protocols through Ethernet |
Internal data logger | 3 Go (more than 20 000 profiles) |
File format | ASCII CSV (compatible with Excel, Matlab …) and binary for raw data |
Velocity | Velocity profile data (relative to acoustic beam directions) per beam and cell |
Echo | Backscattered echo RMS amplitude per beam and cell |
Turbidity | no |
Data Quality | Profile data quality indicator per beam and cell |
Raw IQ | yes |
Power | |
Input | 110-230V AC, 48V POE |
Consumption | Maximum 12 VA |
ON/OFF LED | yes |
UB-Lab 2C - Sheet-flow
This video shows an example of setup for measurements in a sheet-flow condition in an open-channel flume with the UB-Lab 2C from UBERTONE.
UB-Lab 2C - benchmark measurement campaign presented in Madrid at HydroSenSoft 2019
In this paper, new data set of co-located 2C velocity and sediment concentration time-resolved measurements under steady uniform turbulent rough clear water and sheet-flow, performed with an Acoustic Concentration and Velocity Profiler (ACVP) and a prototype for a commercial ADVP, the UB-Lab 2C, are presented ... read more
2C-bistatic velocity profiling for turbulence measurements (follow-up) - M.E.S.U.R.E project
A big step has been taken for ultrasonic instrumentation thanks to the ANR Astrid-ASMA project M.E.S.U.R.E (Métrologie mES hydroacoUstiques opéRationnElles - Operational hydroacoustic SSC metrology)! First results on the measurement campaign in the laboratory facility of the LEGI ... read more
UB-Lab 2C - userfriendly GUI
This video explains geometrical GUI setup for measurements with the UB-Lab 2C from UBERTONE.
Transducers installation examples
You will find here examples of how to install transducers for measurements with the UB-Lab UVPs or the UB-Lab 2C from UBERTONE.
UB-Lab installation
You will find here how to install the UB-Lab from UBERTONE. The UB-Lab communication and powering go through a POE cable and supply.
Overall presentation - UB-Lab User Interface
You will find here how to start the graphical user interface of the UB-Lab from UBERTONE. It is an embedded web interface. And you will get an overview of this interface.
Accessories :
- UB-Lab 2C technical datasheet
- user manual (request via the contact form)
- communication protocol (request via the contact form)