Originally Posted by HI_SALENITY
Can someone post a link to a good controller/probe
I am a bit overwhelmed by the choices and don't want to buy the wrong stuff.
I like THIS
one for my application. The available thermal probes are on that site as well. It's a relay style so doesn't have the SSR output voltage if you need it. The dual displays are very helpful because it keeps your set point visible. Single displays have to toggle between what you set and the actual value.
When using these PID controllers for gas control you have to adjust parameters to get the best performance. For instance, on a Love controller it won't turn off until it hits the setpoint. This will cause an overshoot as the thermal mass catches up. On a PID, it will see it's approaching the setpoint and begin to reduce the heat so it eases to the right temp and stays there. It's the parameter values for the PID that customize it for your heat source and vessel.