[time-nuts] Fwd: HP5061B Versus HP5071 Cesium Line Frequencies
phk at phk.freebsd.dk
Sun Jun 4 08:01:42 EDT 2017
In message <3ca81847-63c4-f803-994d-8e07c9973ba0 at earthlink.net>, jimlux writes:
>Modern RTDs all are 0.00385 ohm/ohm/degree at 25C. Typically, you have
>a 100 ohm device (although there are Pt1000s), so it's changing 0.385
>ohm/degree. 1 part in 3000
Depending how much money you want to spend, you can also get pt10k
and even pt100k RTD's, to satisfy particular needs for resolution,
self-heating, inductance, mass and the many and varied noises.
And if course, we cannot talk PT100 and fail to repeat the old pun:
"PT100 is the gold standard for temperature measurement"
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