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12-03-2012, 12:43 PM #1New Guest
- Join Date
- Aug 2010
Where to buy a wall mounted air handler simulator
I would like to buy an air handler simulator for my company's training room to do practice controls programming and troubleshooting. I know there are a plethora of great graphical simulators out there, but I have some old-fashioned customers and techs that I believe would do far better by hands on with an old-fashioned wall-mounted simulator. Any suggestions on who to contact or where I can shop for one? Any and all assistance would be greatly appreciated.
12-03-2012, 01:01 PM #2
You could make one. With ecm motors becoming widely available and "competitively priced" it wouldn't be much of an investment. ECM motors make an easy and effective simulator for a VAV AHU.
12-06-2012, 01:54 PM #3"Can't we all just get a Lon?" - Garry Jack
"BACnet: integration or interrogation?" - The Janitor
"Open protocols? You can't handle open protocols!" - Nathan R. Jessup
“What’s that? Aaa… open protocols? Don’t talk about…. open protocols? Are you kidding me? Open protocols? I just hope we can hardwire an interface!” - Jim Mora http://www.youtube.com/watch?v=U7fjDS0jKiE
12-06-2012, 08:38 PM #4
They are not that hard to build in-house for little $$.
Most I have done consist of an airflow diagram with LEDs indicating the binary points. For analog points 10 segment bar graph LEDs work great. https://www.sparkfun.com/products/9935 You can get fancy and use small 24v fans and small actuators.
Many moons ago I built a demo with a resistor tied to a temp sensor. It was great for teaching PID loop tuning, PWM, ON/OFF control principles. The resistor is wired in a dead short and when energized it heats the sensor. Output and feedback in controller for next to no $$$.
Glossing over the details, but with a little imagination and less than $50 you can have a pretty nice simulator for teaching classes.Propagating the formula. http://www.noagendashow.com/
12-14-2012, 04:47 PM #5
I've seen them built out of plexiglass at the Johnson Controls Institute in Milwaukee.