Where to buy a wall mounted air handler simulator

[randy2331]

Hey folks,

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.

[noskilltech]

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.

[kontrolphreak]

www.hampden.com
http://www.hampden.com/product-list.php?catid=153

kontrol out

[orion242]

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.

[simux]

I've seen them built out of plexiglass at the Johnson Controls Institute in Milwaukee.