OMRON's complete lineup includes
water-resistant AC Axial Fans with superior resistibility to water and
dirt, and General-purpose AC Axial Fans.
Axial Fan Glossary
Nominal Value
The average value of data based on actual measurements. Nominal values
cannot be treated as rated values. Ask your OMRON representative for
details on rated values.
Flow Rate: Q (m³/min.)
The volume of air discharged by the Fan in a unit of time.
Static Pressure: Ps (Pa)
The pressure difference across the front to the back of the Fan generated
by the discharged air, which is unaffected by air flow speed.
1. The air pressure across the front to the back of the Fan does not
change when the Fan is stopped.
2.Static pressure (Ps) is generated at the front of the Fan when it
rotates.
Maximum Flow Rate: Q max (m³/min.)
The volume of air discharged by the Fan when the static pressure is
adjusted to zero (Pa) at the flow measurement unit.
Maximum Static Pressure: Ps max (Pa)
The pressure difference inside and outside the Unit when the flow rate is
adjusted to zero (0 m³/min.) at the flow measurement unit.
This would be the pressure in front of the Unit when the front of the fan
was completely sealed.
System Impedance
The flow resistance inside a mounted Axial Fan caused by the density of
parts and shape of the flow path.
Impedance Protection
A method of preventing burning damage when the motor is restricted from
rotating by setting the motor winding impedance (AC resistance) to a value
giving a temperature rise in the windings below the temperature at which
burning occurs.
Thermal Protection
A method of preventing burning damage when the motor is restricted from
rotating by setting a thermal element to interrupt (the restricting)
operation before the motor reaches a temperature at which burning occurs.
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