DwyerOmega FMA900A Hot Wire Air Velocity Transmitter

The DwyerOmega FMA900A Hot Wire Air Velocity Transmitter provides fast, accurate airflow measurement up to 10,000 FPM (50.8 m/s). Designed with a reliable hot wire sensor, it outputs a linear 0–5 VDC or 4–20 mA signal proportional to air velocity. A built-in SPST relay activates a high-flow alarm, adjustable from 0 to 100% of range, and indicated by a red LED. A green LED shows power status. With a rapid 250 ms response time and ±2% full-scale accuracy, it’s ideal for HVAC systems, fume hoods, cleanrooms, and industrial ventilation. The unit is available with either a fixed 305 mm (12″) probe or a remote probe with a 4.5 m (15′) shielded cable, offering flexible installation.

For more detrails on the DwyerOmega FMA900A Hot Wire Air Velocity Transmitter please see PDF attached or contact us.