Standard platinum resistance thermometers - sources?

L

Lisa_Calibrates

#1
Hi,
I am looking for a metal-clad standard platinum resistance thermometer (SPRT) for use between -196 to 660C, preferably 25 ohm. I am finding a lot of reference in the literature to Rosemount 162CE, Leeds&Northrup 8176, and Tinsley 5187. However, it seems that all of these brands/models are no longer manufactured. This leaves the list of available sensor manufacturers world-wide a bit.. sparse.
Could anyone make any recommendations?
I have seen Fluke 5699, AccuMac 1860, and Isotech 670 (with a smaller temperature range). Anyone with any experience in a calibration laboratory setting?
Thanks!
 
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dgriffith

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#3
We use the Fluke/Hart Scientific 5626 (100-ohm). It has performed very well over the last ten years, and I would expect the same from the 5628. While not exactly an SPRT, the secondary standard status denotes that it meets ITS-90 requirements for resistance ratios. It also falls under the SPRT admonishment "If you can hear it when you put it down, you've put it down too hard". I don't think you can go wrong with the 5628.
 
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