The Dwyer Series 475 FM Handheld Digital Manometer is an intrinsically safe instrument designed for measuring differential pressure of air and natural gases in hazardous locations.
✔ Safety Ratings: FM approved intrinsically safe for Class I, Div. 1 hazardous environments
✔ High Precision: Accurate to ±0.5% full scale (FS) for reliable field testing and balancing
✔ Robust Construction: Housed in a durable extruded aluminum case for tough industrial use
✔ Easy Operation: Digital zero button allows for quick and precise device calibration
✔ Smart Features: Includes data hold functionality and automatic power-off to save battery