Rotron Centrifugal Blowers

Centrifugal blowers develop high pressure-to-volume performance at low rotational speeds for quiet cooling of tightly packaged electronic equipment under severe environmental conditions in airborne, ground based, and shipboard applications. Simplex blowers have 1 squirrel cage impeller wheel while Duplex blowers have 2 squirrel cage impeller wheels mounted on a common shaft - both are available for either clockwise or counterclockwise rotation. Duplex blowers simplify ductwork and allow greater volume performance in tight locations. As with all squirrel cage blowers, air enters axially and exits tangentially, making a 90 degree turn. All models are built to applicable military specifications.
Low Speed Warning Detector (LSWD)
The Low Speed Warning Detector (LSWD) utilizes a programmable frequency switch capable of turning “on” or “off” a load such as an LED, audible alarm, back-up fan, etc, at a predetermined motor RPM. If fan speed falls below the present value, the back-up or warning device is activated. Once the fan speed exceeds the present value, it is deactivated. The RPM value is preset at the factory between 2,000 and 20,000 RPM (actual value is determined by the specific fan performance and customer requirements).