[time-nuts] temperature sensor

Attila Kinali attila at kinali.ch
Mon Jul 21 04:22:14 EDT 2014

On Sun, 20 Jul 2014 23:18:38 -0700
"Tom Van Baak" <tvb at LeapSecond.com> wrote:

> To satisfy my curiosity and get actual data I'd like to place 6 or more
> tiny analog high-resolution temperature sensors all around the OCXO of a
> Trimble Thunderbolt. That's high-resolution both in temperature and in time.
> In other words, no fake accuracy "averaging" allowed. The goal is to observe
> thermal gradients in real-time and see how good, or how bad, the correlation
> is among crystal temperature, case temperature, and DS1620 temperature
> sensor (which is mounted a considerable distance from the OCXO). The same
> technique, and maybe even the same conclusions, might apply to Rb.

May i ask what speaks about using PT100/PT1000 or NTCs?

NTCs are dirt cheap, but might need some calibration first, to
get to time-nuts standards. But PT100 aren't that much more expensive

The NTCALUG03 by Vishay don't look too bad, or if you want PT100
the M310 by Heraeus. The KN1510 by Heraeus look also nice, but are
a tad bit more expensive (about 20USD/pcs)

			Attila Kinali

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the little doings of the day. I believe I could find something ridiculous
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