[Swansea Hackspace] Help with Tempreture sensor (100Kelvin to 350Kelvin)

[Ceri Clatworthy]

The butie of the MAX 31855 is there is only Thermocouple, (connector)
 MAX31855, micro !!

No amps etc.

On Thu, May 21, 2015 at 10:03 AM, Davies T. <t.davies at swansea.ac.uk> wrote:

> Dear David,
>
> Are we measuring temperature on the Celsius or Rankine scale?
> Well, that's got that over with.
>
> Most commercial semiconductor devices are only specified from
> 0 to 50 Celsius. If you pay a bit more you can get extended temp
> ranges e.g. -20 to +70, but beyond that you are looking at very
> exotic (and expensive) parts. If you can place the sensor in the
> fridge and keep the micro outside, you stand a chance.
>
> Solid-state sensors e.g. Dallas are out, we are looking at
> thermocouples and platinum 100 sensors - with their
> associated amps outside the fridge, of course!
>
> regards
>
> Timothy Davies
>
> ________________________________________
> From: hackspace-bounces at swansea.hackspace.org.uk [
> hackspace-bounces at swansea.hackspace.org.uk] on behalf of David Rankin [
> rankin.dc at gmail.com]
> Sent: 21 May 2015 09:31
> To: hackspace at swansea.hackspace.org.uk
> Subject: [Swansea Hackspace] Help with Tempreture sensor (100Kelvin to
> 350Kelvin)
> ve
> Hi All,
>
> I am just messing around with my Audino and the temperature sensor. I
> am wondering if it is this is even possible but I am trying to measure
> low temperature sub -100Celsuis
>
> So being very niave I tried it out in dry ice but when the sensor got
> only got close to its limit, I took it out (-35).
>
> I also looked around for better sensors and found these:
>
> http://www.scientificinstruments.com/product-detail/model-si-440-silicon-diode-temperature-sensors/
>
> http://www.scientificinstruments.com/product-detail/model-si-430-silicon-diode-temperature-sensors/
>
> So what I was wondering. Is it even possible to put a aurdiono in a
> cold cold fridge and meassure low temprtures with a better sensor? If
> not why not?
>
> Any advice or guidance would be really helpful?
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