supply air damper response time

[seanhkim]

Does anybody know how long it takes for a supply air damper
move after it takes an actuation signal? Let's say, now it is 70% open. It needs to open up to 80%. How long it would take? I just need some experimental values from your experinces.

Thanks.

 

[imok2]

Hard to say because it depends on the size of the dampers; operator; pressure and weather there's a positive positioning relay on the operator. The fastest response would be with the relay because it supplies full system pressure on the operator.

 

[MintJulep]

Here are a bunch of data sheets for one series of common commercially available damper motors:

http://www.belimo.us/bellib/Damper_Actuators/AF_Actuators.pdf

Rotational speed varies between about 0.3 deg/sec to almost 5 deg/sec.