AFMSW : Duct Mounted AFMS

Model :AFMSW


The Series Airflow Measuring Stations provide accurate, repeatable measurement of air movement in ПVAC ducts. The Probes patented elliptically shaped sensor design with improved aerodynamic characteristics outperforms more traditional devices, and overcomes loss of accuracy caused by fluid separation at the sensor body. It is designed to maintain a constant parallel airflow pattern over the static sensing ports for more accurate, steady signals under all duct conditions. The elimination of separation results in a stabilized static pressure signal, helping to eliminate “hunting” during fan control.

Airflow Probes used in the Omicron Airflow Measuring Stations utilize a unique in-line groove for total pressure sensing and dual ports for static pressure sensing which produces a higher differential pressure for very low velocity measurements. The total and static pressure measuring points are distributed for equal-area averaging of flows resulting in improved accuracy and reliability. This design permits accurate and stable measurement in highly turbulent flow locations with directional pitch and yaw varying up to 0 degrees without the need for air flow straighteners which restrict airflow and can easily become clogged. The elliptical shape of the Airflow Probes allows air to glide unrestricted around the aerodynamically designed sensors and offers the lowest pressure drop of any airflow measuring device available minimizing ПVAC operating costs.

Additional information

Velocity Range

300 – 5000 FPM (1.5 – 5 m/s)

Probe Length

8 – 1 0" ( 00 – 3000mm)


+/- 1% F.S.


+/- 0.1% F.S.

Temperature range

-40 to 180 F (-40°to 80°C)

Turn-Down Ratio


Pressure Loss

0.004" w.c. @ 700 FPM (1 Pa @ 3.5 m/s)

Materials (Probe)

Anodized Aluminum or PVC

Materials (Station)

14 ga GalVanized Steel

Flow Coefficient