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Would a pid temp controller work as an egt?
by
hamradio
on 16 Dec, 2007 08:35
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#1
by
Vincent Waldon
on 16 Dec, 2007 10:01
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Both of those would work.. they have the right range and a thermocouple that could be tapped into the exhaust manifold.
I've pulled something like the first one apart and converted it to run on 12V (for a very different application.. a neonatal transport incubator) but probably the biggest issue with both of them iwould be the form-factor... they are sized to fit an industrial control panel and are quite deep... finding a spot on the dash that is also deep enough will be bit of a challenge.
They are also not designed for vibration or temperature extremes, as my experience with a PID like #1 in a mobile transport incubator taught me... factories don't vibrate like vehicles do nor does it get to be -20 on most factory floors. I had issues with condensation, inaccuracy, and the internal circuit boards (there's typically several of them sandwiched together) vibrating loose.
I like the idea of an alarm light though !!
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#2
by
Slave2School
on 16 Dec, 2007 10:43
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#3
by
jtanguay
on 16 Dec, 2007 12:46
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that looks cool. cheap too... hopefully its fast and accurate
would be nice to have an audible alarm. if someone was good with electronics they could tap into the max (peak temp) light and use that to switch on the water spray (if you can set your own max temp). and with a dynamic circuit board one could also increase the water injection as the egt's rise.
this makes me want to take the electrical engineering course!
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#4
by
hamradio
on 17 Dec, 2007 15:44
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How much work did it take to convert it from ~85vdc to 12vdc?
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#5
by
Vincent Waldon
on 17 Dec, 2007 16:12
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I was working with an Omega industrial controller (probably OEMed by the one you show, for all I know !!) and it had an integrated 12V step-down inverter, so I just deleted the inverter stage and powered it directly. Added a high-efficiency regulator stage just to be sure... but it was probably overkill.
If I had dug deeper I probably would have discovered the system was 5V eventually... but I never spent the time because power consumption wasn't a concern.
We had a terrible time with vibration: a transport incubator is hoisted in and out of helicopters and across bumpy tarmacs and helipads... but I'm not sure the average car fairs much better. I ended up soldering all the internal circuit board connector plugs permanently to cure it.... I already knew how to pull it apart from deleting the transformer !!
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#6
by
AudiVWguy
on 19 Dec, 2007 17:10
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I emailed them and they said they've sold about 500 of these for automotive use. The only one they had vibration issues with was mounted on a motorcycle. Sounds like a great solution, I plan to get one for the Audi :twisted:
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#7
by
hamradio
on 19 Dec, 2007 19:24
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I think I'm going to buy one.
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#8
by
hamradio
on 21 Dec, 2007 14:29
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I'm torn if I should buy one that says 85v for 46, or if I should the egt one for 70. They are the same controllers.
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#9
by
Slave2School
on 24 Feb, 2008 02:45
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Anyone given these a shot or converted one over (voltage wise) with a how to for dummies?
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#10
by
blkboostedtruck
on 24 Feb, 2008 18:41
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I bought the auburn 1812 and it seems very fast at sencing temp! i have not instaled it yet? but i have been monkeying around with it next to my fireplace! so thats all i can say till it gets warmer out side and i can do somework to my caddy! but i like it!
thanks Duane
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#11
by
Slave2School
on 25 Feb, 2008 12:57
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Thanks I think I'll snag one then