“World’s smallest” fully-integrated and temperature-compensated fluid velocity measurement system

This ultra-compact thermal anemometry system is fully self-contained, and is ideal for use in high-EMI environments. Our proprietary CMOS sensing elements allow the system to be calibrated down to speeds of less than 10 mm/s in air. The electronics package is small enough to fit inside a 13 mm diameter sting, and purpose-designed robust miniature probes can be directly integrated for a complete velocity sensing package.

At a small fraction of the cost of a conventional CTA system, this miniature unit provides all the necessary functionality to carry out flow measurements with minimal complexity. The system has a proprietary analogue temperature correction system, offering a signal virtually insensitive to temperature over a wide range of ambient conditions. Systems are available with robust, surface-mountable flex-probes, either as analogue-reading units or fully-integrated USB-driven systems.


Miniature thermal anemometry system

Wind tunnel measurements

This system provides an ideal alternative to high-cost, high-bandwidth CTA systems for use in environments normally considered too risky for thermal anemometry. With surface-mounted polyamide sensor leads, these units are extremely robust and can be used in particle-laden flows. With our optional coatings, the sensors may also be used in conductive or corrosive environments.

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The high cost of most commercial CTA systems, and the high fragility of conventional hot-wire and hot-film probes makes these difficult to use in educational environments. This micro-CTA system is an inexpensive, robust alternative- and the direct-to-USB signal output means that no additional data acquisition hardware is required.


The thermal anemometry probe offers a compact, low-cost alternative to conventional pressure-based velocity measurement, with improved bandwidth and no holes to become fouled or filled with water. This self-contained unit is small enough to tuck into otherwise inaccessible areas, and is suitable for trackside monitoring.


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