Characteristic variables of a radial fan

Fans are key components of ventilation systems, providing ventilation, cooling, drying or pneumatic transport. For optimum design of such systems, it is important to know the characteristic variables of a fan.

• radial fan as turbomachine
• iris diaphragm or Venturi nozzle to determine flow rate via the differential pressure
• speed adjustment by frequency converter
• U-tube manometer, single tube manometer and inclined tube manometer measure the differential pressure
• air flow rate in pipe section adjustable by throttle valve or iris diaphragm
• speed and electric power capacity digitally displayed