Swiss made with first class materials


No mobile parts and no obstructing possibility

Very low power consumption

Ultra-optimized acoustic sensing

SDI-12 and IoT compatible

Also compatible to all other common I/O standards


Lifetime, CE certification and Packaging

SandFlow logo

The SandFlow SF4 sensor is an ultra-robust instrument measuring solid particle flux intensities and wind speeds.

  • Instrument with no mobile parts (totally sealed acoustic instrument)

  • Universal mounting kit available

  • Omni-directional (even under the highest winds)

  • Corrosion free and resistant to the highest winds and the most extreme conditions

  • Plug-and-Play or totally configurable (microcontroller inside)

  • Can be connected to almost any external central unit

  • SDI-12 and IoT compatible (internal memory)

  • Swiss made


  • Detection and monitoring of sand and dust storms
  • Mass flux and wind-speed measurement
  • Meteorological and scientific applications
  • Industrial surveillance applications

Documents & download:

Please download here the original ISAW-Toolbox software suite, for any model of your sensor.

The ISAW-Toolbox software suite is an all-in-one toolbox utility that allows fully configuring and operating your sensor.

You can download the ISAW-Toolbox software suite in two ways:

  • use the standard setup installer (.exe, .dpkg),
  • or download the non-intrusive standalone archive (.zip, .bz2).

Select the package that match your Operating system (Windows, Linux or Mac) and system architecture (32 or 64 bits), download the package.

To use the installer (.exe, .dpkg): Click on the downloaded file and follow the installation process.
From the archive (.zip, .bz2): Unzip the downloaded file and click on the utility you need.”

.exe .zip
isaw toolbox win32 isaw toolbox exe32
Soon :

The SandFlow SF4 sensor: an ultra-robust instrument

It is a very low-power, maintenance-free and totally sealed acoustic instrument with no mobile parts.

The instrument includes a dedicated analog conditioning module, a digital I/O module and an analog restitution module that can be connected conveniently to almost any external central unit. (data logger, industrial module interface, instrumentation DAQ, USB port).

The sensing part of the instrument is a cylindrical, anti-abrasion, anti-adhesion and anti-rime coated tube supported by two strong stainless steel arms.

Sand flux impact and wind laminar air friction induce change in internal acoustic pressure. The two excitations are discriminated as independent signals as a result of a specific acoustic, mechanical and electronic design.

You can customize the full configuration of the sensor, in a non-volatile memory, with a Plug-and-Play computer connection thanks to a universal USB dongle accessory.