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Furnace control and PID's

Hello all,

I am quite new to Labview and would be grateful if someone could give me
some advice. I work in a research laboratory where we have built a home made
calorimeter. The calorimeter has two temperature outputs and I have written
a VI to read the outputs and save them down as a spreadsheet file. The
furnace of the calorimeter is currently controlled externally using a
Eurotherm temperature programmer. The next step for me is to either

i) Do away with the Eurotherm and control the furnace directly from Labview
by applying a voltage to the phase angle board.

ii) Obtain a VI which will communicate with the Eurotherm.

Does anybody have any idea which of the two options would be the best? Are
there VI's available for either
phase angle board or temperature programmer
control? Or am I left with the daunting task of writing something from
scratch? (which I think is beyond me at the moment!)

Hope someone can advise me.


Jon Atkinson
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There are many VI's on the web for Eurotherm. I would check these five
places
1. Gary Johnsons book comes with a CD which had VI's (fairly certain of
that)
2. Info-LabVIEW mail list and VI archive http://labview.pica.army.mil/
3. SStreams webpages http://www.e-notebooks.com/resources/LabVIEW/
4. http://labview.sandkasse.dk/
5. David Moore's compilation of links to free VI's
http://www.mooregoodideas.com/

I would stick with Eurotherm approach, since that already works and requires
only drivers. Why reinvent the oscilloscope if you have already have it in
lab, so to say. In many cases dedicated hardware is simpler, faster and
equally effective.

Hope it helped,

Reinis Kanders

"Dr Jon Atkinson" wrote in message
news:xS845.3$Xe.117@ne
ws-1.opaltelecom.net...
> Hello all,
>
> I am quite new to Labview and would be grateful if someone could give me
> some advice. I work in a research laboratory where we have built a home
made
> calorimeter. The calorimeter has two temperature outputs and I have
written
> a VI to read the outputs and save them down as a spreadsheet file. The
> furnace of the calorimeter is currently controlled externally using a
> Eurotherm temperature programmer. The next step for me is to either
>
> i) Do away with the Eurotherm and control the furnace directly from
Labview
> by applying a voltage to the phase angle board.
>
> ii) Obtain a VI which will communicate with the Eurotherm.
>
> Does anybody have any idea which of the two options would be the best? Are
> there VI's available for either phase angle board or temperature
programmer
> control? Or am I left with the daunting task of writing something from
> scratch? (which I think is beyond me at the moment!)
>
> Hope someone can advise me.
>
>

> Jon Atkinson
>
>




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