Here at Chell Instruments, we provide a range of probes that are produced by Aeroprobe in the US.

Multi-hole Probes are used to measure the flow velocity and direction in a wide range of measurement conditions. Most commonly they are used in wind tunnels, turbomachinery, and test rigs in the aerospace and automotive sectors. A wide range of geometries and sizes allows for accurate measurements no matter the scale, from a 10mm high compressor flow channel to a 100m diameter wind turbine, we have you covered.

For specialty measurement requirements our 0.7mm diameter 7-hole boundary layer probe takes measurements in the smallest regions. For complex flows, our Omniprobe can cover up to 150° of flow angle. Our high-temperature capable probes can handle up to 900°C without any cooling system.

Head sizes range from 1.6mm (1/16”) to 9.5mm (3/8”) and geometries include Straight, Drilled Elbow, or L-shaped so you can easily access your flow channel. We offer 3-hole, 5-hole, and 7-hole variants depending on your measurement needs. Our 7-hole probe can meet our strict accuracy requirements at up to flow angles of 60° (away from the stem). With a factory calibration, we guarantee accuracy in flow angle of ±1° and velocity of ±1 m/s or 1% whichever is greater and can calibrate from low subsonic (M = 0.05) to supersonic (M = 1.8) in our on-site wind tunnels.