Re: Cylinder temp monitoring - Idratek

["alex007c@xxxxxxxxxxxxxx" <alex007c@xxxxxxxxxxxxxx>]

That's great to know it's quite simple.  Thanks for that Graham.

Chris also suggested similar -

we've done it, a few times, with complete success, using these clip-on ones
:

http://www.rapidonline.com/Electronic-Components/Pipe-clip-temperature-sensors-76422

and these insert-in-a-pocket ones :

http://www.rapidonline.com/Electronic-Components/ATC-Semitec-IP67-10K-Precision-NTC-Thermistor-Probe-with-Lead-122892

both wired straight into a QAI, with a balancing 10k resistor for each, as
per the circuit diagram at the ned of the datasheet :

http://www.idratek.com/public/docs/datasheets/QAI002_DS.pdf

Cortex includes NTC calibration - just fill-in specific sensor values in
the Behaviour sub-menu, & all is taken care-of ...

On 3 Feb 2013, at 18:27, Graham Kiff <graham.kiff@xxxxxxx> wrote:

> I've been monitoring my thermal store for almost 2 years now, using
the Idratek QAI with thermistors and a pull-down resistors.
> This is what I ordered:
> http://uk.farnell.com/jsp/search/productdetail.jsp?CMP=i-ddd7-00001003&sku=1200457
> http://uk.farnell.com/jsp/search/productdetail.jsp?CMP=i-ddd7-00001003&sku=1738754
>
> And it's all been working flawlessly since I connected it up.
>
> Cheers
> Graham
>
> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
alex007c@xxxxxxx
> Sent: 02 February 2013 09:53
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Cylinder temp monitoring - Idratek
>
> Many thanks Kevin and Dave. That's a good solution, and relatively
easy to set up.
>
> Thanks again,
>
> Alex
>
> On 2 Feb 2013, at 05:52, "Dave McLaughlin"
dave_mclaughlin@xxxxxxx> wrote:
>
> > For example, a 100R 0.1% resistor would give you 0.4 to 2.0 volts
at
> > the input. Try and use 0.1% types.
> >
> > @Kevin, good find on eBay. I pay $147 for these types of sensor
> > modules for work. Admittedly, they are programmable and Ex rated
but I
> > was looking for something for home use. Nice find.
> >
> > Dave.
> >
> > From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> > Of Kevin Hawkins
> > Sent: 02 February 2013 07:08
> > To: ukha_d@xxxxxxx
> > Subject: Re: [ukha_d] Cylinder temp monitoring - Idratek
> >
> > You would then calculate the resistor value to give you a voltage
drop
> > close to the maximum the QAI-002 can measure based on the 20ma
max
> > current.
> >
> > K
> >
> > [Non-text portions of this message have been removed]
> >
> >
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
>
> Yahoo! Groups Links
>
>
>
>


[Non-text portions of this message have been removed]



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