RickSFO Senior Member Joined: 30 Dec 2012 Posts: 8 Location: San Francisco Expertise: Professional
Posted Sat Apr 20, 2013, 10:19am Subject: Re: coffee refractometer
On the VST LAB refractometer, does anyone know what the "temperature stability function" is? It appears to be different from the temperature correction since it's listed as a separate feature. Perhaps it's an "on the fly" temperature correction?
When you take a reading with the VST LAB refractometer, the instrument actually takes 30 separate measurements in a brief period of time. If the prism temperature varies more than 0.1C during this process, a "temperature stability error" is returned. You have to wait until things thermally stabilize.
This is distinct from "temperature compensation." That means you can make your measurements at any temperature between 15C and 30C. The result will be accurate as long as you (a) zero the instrument and (b) make your measurement at the same temperature.
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