I believe you are correct. I think that the on/off cycle is switched as
a function of the temperature inputs, and thus is "proportional," so to
speak. Rather than heating up until a temp is reached, then allowing
the hood to cool down until more heat is needed, the Power Raptor
switches on (or off) more or less frequently, depending on the need for
heat. It's an on/off equivalent of a rheostat, so to speak. That should
give a lot tighter control of the temperature in the hood. With the
Digital Bradley controls alone, I generally see about +- 5f swing around
the setpoint. That's no big deal, but what the heck. <grin>

I'm sure that I could also build something that would work, but having
no parts on hand, I'd have to locate and purchase everything. To me, if
someone has already built what I (think I) want and it's not
unreasonably priced, I'll just get it and be happy.

Nonny

yetanotherBob wrote:
> In article >,
> says...
>
> ---snip---
>
>> 1) I have a Power Raptor and Competitor controller on order.
>>
> ---snip---
>
> I'd be interested in reading your thoughts on the Power Raptor
> interface, specifically whether it's worth the money. It seems like
> it's something that could be built fairly easily, although I may well
> have an oversimplified view of what it's actually doing (i.e., turning
> the heating element on and off in response to input from the Guru
> Competitor logic unit).
>
> Good luck with your new, soon to be automated, rig.
> Bob

--
-Nonnymus-

Please stop Californicating Nevada

In the periodic table, as in politics,
the unstable elements tend to hang out on
the far left, with some to the far right as well.