Siemens 125-5033 Owner's Manual

Fume Hood Controller Owner's Manual6 Siemens Building Technologies, Inc.The terminal is available in diameters ranging from 4 to 18 inches. The terminal is available ina variety of end configurations to match the ductwork construction. It is also available inTEFLON® coated 18-gauge steel for highly corrosive environments.Figure 5. Laboratory Exhaust Air Terminal.Venturi Air ValvesThe Venturi Air Valve is a pre-packaged, easy to install airflow measurement and controlstation. See Figure 6. This assembly combines the orifice plate flow sensor, differentialpressure transmitter, Electronic actuator and a Venturi Air Valve.This arrangement provides fast acting, stable, and precise exhaust airflow control.FUM0400R1Figure 6. Single-Body Venturi Air Valve.