Thanks rmw. I visited the site you provided. Good information. I especially like the work sheets. I am not interested in changing the actuators. The ones we have are fine.
Thanks for the post terje61. I have to agree that no matter what calculation is made, trial and error is how it ends up. Was looking for simple piece of software that did the calculations per your bullet point #3. I was trying to avoid remembering geometry class but appears I need to deal...
Attached photo for clarity. Thanks for any help.http://files.engineering.com/getfile.aspx?folder=dfe85e6e-5645-47a6-97c3-56889c40e31b&file=Zone_2_Actuator.JPG
On my furnace, a motorized actuator drives a butterfly air valve with a "connecting rod" or linkage. The air flow through the butterfly valve is not directly proportional to how far open it is. For example, when the valve is 10% open I may be getting 30% flow. when the valve is 20% open I may...
Seems simple but I am looking for some software to help calculate the linkage geometry needed to linearize different size butterfly valves driven by a motorized actuator. Actuator has slidewire feedback and would like to be close to linear as possible on the butterfly valve. Valve is...
