Variable Air Volume Damper
Variable Air Volume Damper
Standard Model: VAV-D
Cosmos VAV Damper, features a primary inlet with an integral damper and a discharge plenum. It is lined with insulation to provide sound absorption and thermal resistance, It is designed to meet the needs of today’s VAV systems.
Product Description
Cosmos VAV Damper, features a primary inlet with an integral damper and a discharge plenum. It is lined with insulation to provide sound absorption and thermal resistance, It is designed to meet the needs of today’s VAV systems.
Operating Principle
The working principle of the pressure based VAV depends on measuring pressure difference between two different zones. Pressure sensor is changing pneumatic signal into electric which is a linear function of the pressure difference. Electric signal is send to the controller where is compared with reference signal and then the controller sends the electrical impulse to the actuator to modulate the air damper to regulate the flow quickly, precisely and steadily, independent of pressure fluctuations in the duct system if there is a difference between the measured and reference values. The minimum and maximum volume flow and maximum volume flow set point is freely programmable.
Control Speed of the VAV Controller
During the entire planning of the system, the focus is on the protection of the personnel and the environment. Room pressure changes must be recognised quickly and regulated with the required supply or exhaust air; this is why Cosmos consistently relies on high control speeds. The control time for motor is < 3 seconds for an angle of 90°. Thus the stringentrequirements of the user and the legal regulations can be fulfilled.
Features / Advantages
● High-speed, adaptive control algorithm for precise and stable control
● Control time < 3 sec for a 90° angle
● Suitable for supply air and exhaust air volume flow control in laboratories and clean rooms
● Entire system data is saved despite of mains voltage failure, safe in the FLASH MEMORY
● Free programming of system data and retrieval of all actual values
● Monitoring of the customer ventilation system by integrated monitoring of the supply air / exhaust air set point that is to be regulated
● Closed loop
● Analogue actual value output O(2) … 10V DC
● Rapid, stable, precise control through direct actuation of the actuator.
● Control parameters are adaptively optimized online through BACnet MSTP protocol.
● Response time and regulation of the exhaust air volume flow < 3 sec