Thermoelectric Anemometer from Switzerland - Schiltknecht

Multi-functional handheld devices

ThermoAir3 with unidirectional sensor (left), omnidirectional sensor (middle) and humidity sensor (right)

Thermoelectric process anemometer

ThermoAir6/64 with omnidirectional sensor (top) and unidirectional sensor (bottom)

The parameter air-flow velocity is related to the unlimited flow; in the case we measure the volume flow in a closed pipe we can calculate immediately the volumetric flow rate ΔV/Δt or the mass flow rate Δm/Δt if the cross-section of the pipe is known.