Re: Ping Karl!
- From: "DoN. Nichols" <BPdnicholsBP@xxxxxxxxxxx>
- Date: 31 May 2012 00:18:45 GMT
On 2012-05-30, Gunner Asch <gunnerasch@xxxxxxxxx> wrote:
On Tue, 29 May 2012 19:53:23 -0500, dpb <none@xxxxxxx> wrote:
On 5/29/2012 6:46 PM, Gunner Asch wrote:
On Tue, 29 May 2012 14:41:08 -0500, Jon Elson<jmelson@xxxxxxxxx> wrote:...
...OOps, those are Platinum resistance temp. detectors, NOT
and the difference is?...
A thermocouple is a twin-lead junction of two dissimilar metals that
generates a voltage differential as a function of temperature changes
("the thermoelectric effect").
A resistance temperature detector (RTD, commonly) is a single
material/alloy whose resistance varies w/ temperature.
In the former one measures the generated voltage; in the later one
measures resistance. Each then uses a calibration curve to relate the
output to temperature.
So what do I have?
You appear to have the variable resistor type. Most controllers
should handle them. The voltage generator type would need some other
metal as half of the sensor element.
Not much that I can trim in this followup and keep the context for
other readers. Sorry.
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