IRIS dampers are a brilliantly simple solution for fast and exact measurement, balance and control of airflow. Their unique design is an ingenious application of the orifice plate principles in fluid dynamics, and allows for airflow to be regulated quickly and accurately at a single station.
This distinct IRIS damper feature saves time and money in initial installation, set-up and follow-up commissioning. It is ideal for any space requiring accurate airflow regulation, supply and exhaust tracking control, individual comfort control, or applications that require air balancing on a regular basis.
An IRIS damper comprises a casing, interlocking damper blades, a blade setting chart with an adjustment nut, airflow measurement pressure taps and an airflow adjustment chart.
IRIS dampers possess a number of distinct advantages over conventional volume control dampers:
Precise Airflow Control
Precise airflow control and measurement, with an accuracy of up to ± 5%, is possible in a straight duct run with a properly installed IRIS damper.
Ideal for applications that require very precise airflow control, measurement and balancing. Clean rooms and laboratories are but two examples.
Single Station Measurement
Built-in pressure taps allow for accurate pressure drop readings across the damper, and provide a single station for measurement, control and balancing.
Single station operation results in reduced field labor time and cost savings.
Fully Retractable Blades
It is possible to fully retract the blades of an IRIS damper, resulting in a completely open duct.
When fully retracted, there is nothing obstructing the airway therefore resulting in a zero local pressure drop.
Fully retractable blades allow for easy cleaning of a duct.
A fully open IRIS damper results in a lower pressure drop than any conventional damper.
Better Airflow Characteristics
Perhaps the biggest single advantage to using an IRIS damper comes from its airflow characteristics.
Conventional dampers using parallel blades direct airflow to the walls of the duct, thereby creating significant turbulence and leading to reduced efficiency and increased noise.
With an IRIS damper, there is a uniform reduction of the cross-sectional aperture as the blades are closed. The airflow remains in the center of the duct and evenly distributed.
Efficiency is improved.
Noise level remains low.